IX.
Electrical and Instrumentation
A.
Introduction – The HRSD Engineering Department has an Electrical Shop that
provides electrical and instrumentation support for all of HRSD. The Electrical
Engineer in the Engineering Department is responsible for coordinating the
electrical review of plans and specifications and coordinating with the Electrical
Shop on design and start- up issues. Strong preferences exist for certain brands of
equipment and certain criteria or features as indicated in the tables that follow.
B.
General – Unless otherwise agreed upon, the Engineer shall design facilities and
specify equipment around the names listed in this Section. Competition is to be
allowed (unless sole source is indicated). Specifications should be written around
the equipment and equipment manufacturers listed to maintain quality and to
exclude specific manufacturers based on past experience. In all cases NEMA vs.
IEC rated components are strongly preferred. The following sections provide
independent tables of standards and preferences for pump stations, interceptor
system controls and treatment plants in order to accommodate the different needs
and preferences of the various operating departments within HRSD.
C.
Pump Station and Interceptor Systems – See attached Table “Pump Station.”
D.
Treatment Plant – See attached Table “Treatment Plant.” Equipment Numbering
Sequences shall be in accordance with the Treatment Plant Section of this
document.
IX- 1
04/01
Electrical and Instrumentation
Standards and Preferences
Index
Pump Station
1.
2.
3.
4.
5.
6.
7.
Treatment Plant
1.
2.
3.
4.
5.
6.
7.
Switchgear
MCCs
Emergency Generators
Energy Efficient Motors
Sump Pumps
Level Sensing Systems
Variable Speed Drives (VSDs)
8.
Switchgear and MCCs
Emergency Generators
Energy Efficient Motors
Sump Pumps
Level Sensing Systems
Variable Speed Drives (VSDs)
Watt Hour Meter (for MCCs or
individual motors)
PLCs
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
Exhaust Fans
Lighting
Concrete Housekeeping Pads
Conduit and Conduit Systems
Wire
Relays
Lockout/Tagout → Safety
Switches/Receptacles/Plugs
Electric Heaters
Electrical Drawings
Safety Switches (fused or unfused)
Transformers
Metering Vaults/Pits
Pressure Sustaining/Regulating Valves
Alarm Systems
Flow Meters
RTUs
Louvers/Dampers
Cathodic Protection
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
Metering Packages for Switchgear,
MCCs or Individual Motors
PLCs
Exhaust Fans
Lighting
Concrete Housekeeping Pads
Conduit and Conduit Systems
Wire
Relays
Lockout/Tagout → Safety
Switches/Receptacles/Plugs
Heaters
Electrical Drawings
Safety Switches (fused or unfused)
Transformers
Metering Vaults/Pits
Pressure Sustaining/Regulating Valves
Flow Meters
RTUs
Louvers/Dampers
Transfer Switches
On-Line Vibration Monitors
Panel Meters
Analyzers/Monitors
Miscellaneous Instrumentation
Electrical Equipment Testing
IX- 2
04/01
Item
#
1
PUMP STATION
Electrical and Instrumentation
Standards and Preferences
Electrical Equipment/Item
Recommended/
Specific Criteria
Preferred
Manufacturers
Switchgear and MCCs
Cutler Hammer
-Everything to be face-mounted, lead, lag, lagSquare D
lag selectable, (any combination) with
Westinghouse
automatic failover
Allen Bradley
-Prefer bottom entry
Cutler Hammer
-Provide 20 amp minimum
•Breakers/Solid State Breakers
Westinghouse
Square D
Basler
-Volt Meter 3 phase & off
• Instrumentation Package
GE
-Ammeter 3 phase & off
Westinghouse
-kW
Brown-Boveri
-PF
-kVA
-kVAR
-Utility grade CTs & PTs
-Metering packages (see #8)
-Provide 3 phase undervoltage & overcurrent
protection
Square D
-Expandable contact blocks on operators
•Selector Switches, Push Buttons,
Cutler Hammer
Lighted Push Buttons
Cutler Hammer
-Provide with expandable auxiliary contacts for
• Contactors
Square D
120 volt control circuits
Buss
-Must be locally available
• Fuses & Fuse Holders
Shawmut
Square D
-Copper coils/aluminum coils unacceptable
• Transformers
Pheonix Contact
-Rail mount if possible
•Terminal Strips
-Industrial rated
Square D
-120 volt control voltage
•Combination Starters (buckets)
Cutler Hammer
-Run light – red
-Stop light – green
-Power available light – white
-Elapsed time meters–pump motors
(Yokogawa) graduated in 1/10 hours
-Externally mounted resets, operational from
the front
-Provide with thermo -magnetic breakers
-Fused control transformer
-MCC mounted lighting panels shall be
provided with 25% spare breakers
-Provide spare buckets (minimum 2)
-Provide connections for motor leads directly
fro m the motors to the starters. Do not use
intermediate terminal blocks
·Rubber Mats (in front of gear)
-HRSD will provide and install at substantial
completion (OSHA approved electric safety
rubber matting)
IX- 3
04/01
Item
#
2
Electrical Equipment/Item
Emergency Generators
•Generator
PUMP STATION
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
Caterpillar
-Prefer diesel generators
Cummins Onan
-Do not prefer turbine generators
Detroit Diesel,
-Engines to be of domestic manufacture
Series50 and 60
whenever possible
only
-Prime rated
Kohler
-4-stroke
John Deere
-Parts must be available in 24 hours or less
-Meet EPA and VA DEQ air standards
-Prefer low emission units
Stamford
-Generators 1Mwatt and larger require a two
bearing generator
-The rectifier shall be a brushless, full-wave
bridge.
-All stator winding leads are to be brought out
to the terminal box.
-Neutrals shall be sized to full rating
-Temperature rise shall not exceed Class B
rating with 105° C ambient rise
-Alternator shall have a space heater that
switches off when running.
-Provide for 2/3 winding pitch
-Minimum Class H insulation (epoxy) with
tropicalization (anti-fungus) temperature
requirements are specified by NEMA
-Provide voltage regulation less than +/- 1%
-Provide 150% minimum overspeed capability
-Provide amortisseur winding
-Provide less than 5% THD (Total Harmonic
Distortion)
-Provide less than 50 TIF (Telephone influence
factor)
-Provide Square D main breaker (American
made only)
-Provide elapsed time meter Yokogawa,
graduated in 1/10 hours
IX- 4
04/01
Item
#
Electrical Equipment/Item
·Diesel Engine
PUMP STATION
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
-Heavy-duty, direct-injected, 4-stroke diesel engine
Caterpillar
Prefer electronically controlled engines with an
Cummins Diesel
electronic control system that meets or exceeds the
Detroit Diesel
operation of the Woodward 2301A series governor.
Kohler
-State the control system
John Deere
-Provide system software and training to use
software and operate the engine
-Provide isochronous frequency regulation (no load
to full load)
-Provide +/- .25% steady state frequency regulation
(minimum)
-Provide a mechanical machine with a Woodward
2301 governor if electronically governed machines
are not available.
-Size air, fuel and oil filters to provide a minimum of
100 hours of operation before servicing. Provide a
Racor fuel-water separator. The air filter is to be a
dry type with a restriction indicator.
-Provide a Nelson (or Racor) heavy duty crankcase
vapor coalescer.
-Provide a battery charging alternator (65 amp
minimum – negative ground).
-Prefer a skid-mounted radiator sized to prevent
overheating in the most severe conditions (110°F
ambient)
-Provide residential grade super critical type exhaust
system and muffler. All insulation must be blanket
type (non-asbestos), removable for servicing of
exhaust system
-Provide 24 volt DC starting system.
-Provide all diagnostic equipment for complete
trouble shooting (software/technical
manuals/hardware)
-Provide speed sensing to protect against accidental
starter engagement into a moving flywheel. (Battery
charging alternator voltage will not be accepted for
this purpose).
-Provide an adjustable (0-15 minutes) cool down
time
-Provide a large red emergency stop push button.
-Low oil pressure, high coolant temperature,
overspeed, and over-crank shall shut down the
engine and provide indicator lights.
-Provide analog or digital displays for coolant
temperature, oil pressure, service hours, engine
RPM, system DC volts and system diagnostic code.
-Provide Kim Hot-Start engine block heater
(thermostatically controlled)
-Provide vibration isolators between generator set
base and floor
-Provide lifting eyes
-Provide mean effective pressure break (BMEP)
calculations
IX- 5
04/01
Item
#
Electrical Equipment/Item
• Battery Chargers
•Starting Batteries
•Day Tanks
Transfer Switches
PUMP STATION
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
Charles Chargers
-Model #AA2410 24 volt chargers or
LaMarche equal
-Automatic, solid state, provide continuous
taper charging
-UL listed, provide with under/over voltage,
current failure and loss of power
acknowledgment
GND
-Use 80 series lead acid batteries
Dynacell
-Provide 2 minimum
-Each battery shall provide 1200 CCA each
-Provide with insulated battery rack
-Provide with 3 year full replacement guarantee
-Provide as a minimum 2 cranking cycles at a
minimum of 30 seconds each
Pryco
-UL Listed – Double Wall
Simplex
-Provide w/Oberndorfer gear type pump.
(no substitute)
Pumps with rubber or nitrile impellers will not
be accepted
-Provide with a low level alarm
-Size for 2 hour minimum running time
-Provide a fuel level indicator on the day tank.
-Provide a graduated stick.
Cutler Hammer
-Provide with an exercise cycle of 4 hours,
Westinghouse
field adjustable from 10 minutes to 4 hours
Square D
-Provide with a utility power available light
ASCO
normal/emergency, phase indicator lights
Underground Storage Tanks (UST)
Zenith Transfer
switches are not
acceptable
Controls by MSA
Tankguard
Veeder Root
Hersey
Louvers and Dampers
Greenheck
IX- 6
04/01
-Provide with leak detection system
-Provide in accordance with EPA and all
applicable State and Local standards
-Provide tank monitoring system
-Provide a graduated stick for level measuring
-Provide for refueling and stick access
-Provide with pneumatic tank level indicating
system
-Provide with 48-hour fuel tank capacity
-Provide for gravity damper
-Provide anodized aluminum louvers and
dampers with nylon bushings
-Provide with bird screens readily removable
without removing louvers or dampers
-Designed to limit rainwater in the building
-Steel is not acceptable
Item
#
Electrical Equipment/Item
Instrumentation Package
Start Up and Testing
•Diesel Generator Tests
3
Energy Efficient Motors
4
Sump Pumps
5
Level Sensing Systems
PUMP STATION
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
-Voltmeter 3 phase & off
-Ammeter 3 phase & off
-Frequency
-Provide a voltage adjust reostat
-Provide 3 phase undervoltage and over-current
protection
-Provide automatic and manual start and stop
-Provide factory test data
-Simulate and test all safety equipment. Using
a reactive load bank (.8PF) run the generator:
15 minutes at idle speed
30 minutes at 25% load
30 minutes at 50% load
60 minutes at 75% load
120 minutes at 100% load
15 minutes at 25% load
15 minutes at 0% load
off
-Record stator, bearing, oil, ambient, and water
temperatures every 15 minutes.
-Record speed, voltage and amperage at 15
minute intervals as well as just prior to and
after the load change
-Hook up the generator and cycle the through
light loading cycles as well as heavy loading
cycles (3 each). Record same parameters every
15 minutes and before and after changing load.
Tests to be witnessed by HRSD Automotive
Supervisor and HRSD Electrical Engineer.
-Create and attach to the switchgear detailed
instructions. The instructions shall be
laminated. The instructions shall be simple
enough for anyone to pick them up and operate
the diesel generator set.
-See HRSD Electric Motor Specifications in
Appendix F
Zoeller Co
-120 volt
-Plug into receptacle
-Float controlled
IX- 7
04/01
Item
#
Electrical Equipment/Item
• Bubbler Type
•Pressure Sensing Systems
•Float Balls
6
PUMP STATION
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
Healy-Ruff
-Complete purged air bubbler system for
612 633 7522
sensing wetwell liquid level which generates
and transmits level signals to a PLC which
controls pump operations
-Provide with L.P. switch with N.C. dry
contacts down stream of the regulator
-Provide duplex air compressors mtd. on 30
gal. horizontal receiving tank (Bell & Gossett
or equal)
-Provide push button for manual purging of
bubbler piping
-Provide manual alternation of air compressors
-Provide panel mounted 4 1/2 inch 0 level
gauge
-Provide an oil-less compressor with 120 volt
60 cycle, single phase motor with integral
thermal overload protection
-Provide high level alarm in wetwells. Provide
with mercury switch backup.
-Provide Red Valve pressure transmitters
-Provide 0-100psi gauge (Ashcroft)
-Provide series 40 pressure sensor
-Provide a 1AP20 absolute pressure electronic
transmitter
-Provide Viton Boots
-See Standard Detail “Pressure Reducing
Station Pressure Sensor Detail”
-Suction and discharge transmitters to be
mounted in dry well area
Fisher-Rosemont
-Locate near sump pump in dry well
-Alarm on high level
Variable Speed Drives (VSDs)
IX- 8
04/01
Item
#
PUMP STATION
Electrical and Instrumentation
Standards and Preferences
Electrical Equipment/Item
Recommended/
Specific Criteria
Preferred
Manufacturers
Safetronics
-Provide a programmable Ramp time
•Variable Frequency Drives (VFD)
Control Techniques
- Provide input reactors
-Pulse Width Modulated (PWM)
-12 pulse drives are required, 6 pulse drives are
not acceptable.
-Prefer IGBTs
-VFD must be able to be isolated and bypassed
(manual operation) allowing the motor to
operate across the line at full load speed and
current.
-Provide manual isolation and bypass
capability
-Automatic restart on power disruption
-Tune out a minimum of 3 frequencies
-Hands/Off/Automatic (HOA) selector switch
with manual speed pot
-Mount the resets and appropriate indicator
lighting on the front of the drive or outside of
the box
-Tune drive to motor with a harmonics meter
-Provide an input circuit breaker for short
circuit protection
-The controller electronics shall contain
indicators of the following conditions:
Undervoltage
Overvoltage
Over temperature
Memory failure
Emergency Stop
Ground fault
Instantaneous overcurrent
-Provide thermostatically controlled ventilation
-Provide a NEMA 12 free standing enclosure
with thermostatically controlled ventilation and
dust filters.
-Mount the resets and the appropriate indicator
lighting on the front of the drive or the outside
of the box.
-Do not prefer
•DC Drives
•Eddy Current Brake Systems
7
Watt Hour Meter (for MCCs or individual
motors)
-Do not prefer
Power Logic
IQ Plus
Multilin
IX- 9
04/01
-Provide cumulative hour meters on each motor
(MCC).
-Provide a motor on each MCC to indicate 3
phase parameters on the MCC, i.e., volts, amps,
kW, PF, kVA, kWh, etc.
-Provide output interface for V, I & kW
Item
#
Electrical Equipment/Item
8
PLCs
9
Exhaust Fans
10
Lighting
•Incandescent
•Fluorescent Light
•Metal Halide
•HPS
•LPS
•Mercury Vapor
•Emergency Lighting
11
•Exit Lighting
Concrete Housekeeping Pads
PUMP STATION
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
Omron
-Provide functional descriptions, the
Siemens (TI)
application program, the job-specific program
Allen Bradley
data and a copy of the as-built s/w
Square D
documentation
-Include control & alarms in PLC
Controls accommodate automatic purge and
latch output to current state during bubbler
purge.
ILG
-Corrosion resistant including hardware
Dayton
-Must be explosion proof in wet wells and
Greenheck Airovent
metering vaults
-Provide proper levels of lighting over major
Holophane
equipment including switchgear, generators,
Hubbell
pump motors, and controls. Lighting levels
Thomas
should conform to the IES lighting handbook
Crouse-Hinds
as a minimum
-Provide exterior lighting at doorways and yard
lighting required by building configuration
-Consider operation by photo electric cell
-ALTO or equivalent lighting shall be used to
limit the mercury content of the lighting
-Non-fluorescent fixtures shall be metal halide
Crouse Hinds
-Provide explosion proof lighting in pump
station wet wells
-Provide 10 ft candles minimum in wet well
areas
Holophane
-Provide w/low temp ballasts
-Provide w/ lens and gaskets in chemical rooms
-Do not provide fluorescent lighting and
controls on the same circuit.
-Provide electronic ballasts with T-8 bulbs
-Provide fluorescent lighting in control cabinets
(i.e. PLCs, bubbler control panels) with door
switches
Holophane
-Suitable in high bay areas
-Provide quick strike fixtures
-Wall-paks are suitable inside or outside
-Not acceptable for any application
-Not acceptable for any application
-Not acceptable for any application
Dual lite MLW series -Wall-paks are provide by HRSD
USI Prescolite
-Highly visible 24hours/day for life
-Provide a minimum of 4 inch thickness under
MCCs and around conduits at floor
penetrations
-Chamfer all edges
IX- 10
04/01
Item
#
12
13
PUMP STATION
Electrical and Instrumentation
Standards and Preferences
Electrical Equipment/Item
Recommended/
Specific Criteria
Preferred
Manufacturers
Conduit and Conduit Systems
-Ream and chamfer all edges
-EMT or IMC are not allowed
-All flexible conduit shall be liquidtite or equal
-Provide ¾ inch minimum size
-Do not use plastic anchors
-Seal conduits w/ a silicone product as
necessary
-See architectural and coatings standard for
markings and coatings
-Provide w/ service entrance
•Spare Conduit Feeder
-Add appropriate spares
Robroy
-Provide in wet wells, underground (not
•PVC Coated Rigid Steel (inside and
OCAL
encased), chemical areas, outside, and damp
out )
Perma -Cote
areas. Provide with appropriate fittings, boxes
and touch-up material
-Provide with applications other than PVC
•Galvanized
coated above.
-Underground/encased in concrete, Schedule
•PVC
40 can be substituted for galvanized conduit in
duct banks where EMI is not a threat
-Use suitable tools w/ conduit
•Tools Used
-Use appropriate material to patch and repair
•Patching/Repair
-Use Myers hubs for wet well and outside
•Flex – Liquidtite & Fittings
conduit terminations
Crouse Hinds
•Εxplosion Proof Fittings
Appleton
-Use appropriate fittings and materials
•Fixtures & Fittings (pull boxes)
-To suit conduit materials
•Struts and Straps
-Use matching fasteners
-In outside, wet or damp areas, use SS fasteners
•Pull Boxes (wire pulled through) and
-Over 6” x 6” are to be hinged
Junction Boxes (Wires terminated
-Gasketed
inside)
-Use SS or alum in outside or damp areas
Wire
-Provide separation of power, signal and
telephone services
-Use compression type lugs only
-Do not splice wire
-Provide conduit and wiring for telephone
•Telephone
•THHN, THWN
-Follow NEC color coding
-All wire #14 AWG and larger shall be
stranded wire, rated for 600v
-#12 minimum wire size for typical
applications
IX- 11
04/01
Item
#
Electrical Equipment/Item
•Instrumentation
14
Relays
•Industrial
•Electronic
15
16
Lockout / Tagout à Safety
Switches / Receptacles / Plugs
17
Electric Heaters
18
Electrical Drawings
19
Safety Switches (fused or unfused)
20
Transformers
•Dry
21
PUMP STATION
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
-Instrumentation control wire should be sized
accordingly (#18 stranded wire recommended)
-DC wire shall be color-coded blue
-AC wire shall be color-coded red
-Externally powered circuits (entering/leaving
the cabinet) shall be color-coded yellow
Note: Cabinets with multiple sources must
be clearly marked as such.
Wesco
Cutler Hammer
IDEC
Potter Brumfield
Agastat
Pass & Seymour
Hubbell
Crouse Hinds
Square D
Cutler Hammer
Westinghouse
Allen Bradley
Square D
Cutler Hammer
Westinghouse
GE
Metering Vaults/Pits
•Dehumidifiers
-Plug in ice cube type
-Provided for in Division 1 of specifications
-Provide for dedicated circuits for sump pumps
-Provide a receptacle on each wall of the PS,
Upper & lower levels. Lower levels shall be
mounted at 48 inches AFF.
-Provide one wp/wt receptacle on the exterior
wall on a single circuit, separately switched.
-Provide ground fault receptacles and breakers
where required.
-Provide power receptacles in control cabinets.
-Not used, do not supply unless a condition
requires it.
-P&IDs are to conform to ISA modified
standards (consulting engineer to provide)
-Provide functional descriptions with the
P&IDs (consulting engineer to provide)
-Provide Point to Point connection drawings.
Contractor shall develop. Review and approval
by the Engineer shall be prior to installation.
-Light duty safety switches are unacceptable
-Must be pad lockable
-No Aluminum Wire
-Provide 220° C insulation system for 15 kVA
and larger
-Provide 180° C insulation system for
transformers less than 15 kVA
-Transformers shall handle a 15% overload
without exceeding the insulation rating
-Provide receptacle and location for HRSD
installation
IX- 12
04/01
-Fixed base
Item
#
22
23
24
25
26
27
Item
#
1
PUMP STATION
Electrical and Instrumentation
Standards and Preferences
Electrical Equipment/Item
Recommended/
Specific Criteria
Preferred
Manufacturers
-Provide two receptacle w/wp covers
•Power Requirements
-See Exhaust Fans
•Exhaust Fans
Pressure Sustaining/Regulating Valves
KTM
-No butterfly valves or pinch valves with
Foxboro
controls
Clow
-Provide 4-20 mA operated valves. Do not use
pulsed control valves
-Prefer Automatic Controls of Virginia or
Valve Automation for actuator applications
Alarm System
-HRSD will provide and install the alarm
system. Contractor shall provide sensors and
wiring to a junction box and terminate on a
terminal strip adjacent to the alarm panel
location
-HRSD will provide alarm points
Flow Meters
-Size for average flows
Brooks
-Use for control or billing applications
•Magnetic
Foxboro
Yokogawa
ABB Kent-Taylor
Fuji
-Prefer not to use for control
•Ultrasonics (insertion or strap on)
Polysonics
-Locate inside station
Panametrics
-Generally, prefer not to use
•Venturi
RTUs
HRSD to provide
-Motorola – Moscad
-Physical size 24”x24”x8” in a NEMA 4x
enclosure
•Antenna
• Junction box
•Sensors
Louvers/Dampers
Greenheck
-Provide gravity dampers for all applications
-See emergency generators – louvers
Cathodic Protection
Test Stations
-Use Flush Fink Test Stations
Electrical Equipment/Item
Switchgear
•Breakers/Solid State Breakers
TREATMENT PLANT
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
Cutler Hammer
-Provide with push to test lights
Westinghouse
-Bottom entry is preferred
Square D
-Provide in a room strictly for switchgear
Cutler Hammer
-Provide appropriate spares and spaces
Westinghouse
Square D
IX- 13
04/01
Item
#
2
TREATMENT PLANT
Electrical and Instrumentation
Standards and Preferences
Electrical Equipment/Item
Recommended/
Specific Criteria
Preferred
Manufacturers
Basler
-Provide utility grade metering
• Instrumentation Package
GE
-Volt Meter 3 phase & off
Westinghouse
-Ammeter 3 phase & off
Brown-Boveri
-Kw
-PF
-kVA
-kVAR
-Utility grade CTs & PTs
-Metering packages (Reference Item #8)
-Provide 3 phase undervoltage & overcurrent
protection
Square D
-Expandable contact blocks on operators
•Selector Switches, Push Buttons,
Cutler Hammer
Lighted Push Buttons
Westinghouse
Allen Bradley
Cutler Hammer
-Provide with expandable auxiliary contacts for
• Contactors
Westinghouse
120 volt control circuits
Square D
Allen Bradley
Buss
-Must be locally available
• Fuses & Fuse Holders
Shawmut
Square D
-Provide Copper coils
• Switchgear Control
Cutler Hammer
-Aluminum coils are unacceptable
Transformers
Westinghouse
Allen Bradley
Phoenix Contact
-Rail mount if possible
•Terminal Strips
ILSCO
-Industrial rated
·Rubber Mats (in front of gear)
-HRSD will provide and install at substantial
completion
MCCs
Cutler Hammer
-Do not provide in the same room with
Westinghouse
chemical tanks or pumps
Square D
-Provide with “push to test” lights
Allen Bradley
-Bottom entry is preferred
-Provide with face mounted operators and
resets
Cutler Hammer
•Breakers/Solid State Breakers
Westinghouse
Square D
Westinghouse
-Volt Meter 3 phase & off
• Instrumentation Package
-Ammeter 3 phase & off
-kW
-PF
-kVA
-kVAR
-Utility grade CTs & PTs
-Metering packages (Reference Item #8)
-Provide 3 phase undervoltage & overcurrent
protection
IX- 14
04/01
Item
#
3
TREATMENT PLANT
Electrical and Instrumentation
Standards and Preferences
Electrical Equipment/Item
Recommended/
Specific Criteria
Preferred
Manufacturers
Square
D
-Expandable contact blocks on operators
•Selector Switches, Push Buttons,
Cutler
Hammer
Lighted Push Buttons
Westinghouse
Allen Bradley
Cutler Hammer
-Provide with expandable auxiliary contacts for
• Contactors
Westinghouse
120 volt control circuits
Square D
Allen Bradley
Buss
-Must be locally available
• Fuses & Fuse Holders
Shawmut
Square D
-Metering
• MCC CTs and PTs
Cutler Hammer
-Provide Copper coils
Westinghouse
-Aluminum coils unacceptable
Allen Bradley
Pheonix Contact
-Rail mount instrumentation if possible
•Terminal Strips
ILSCO
-Industrial rated
·Combination Starters (Buckets)
Square D
-120 volt control voltage
Cutler Hammer
-Run light – red
Westinghouse
-Stop light – green
Allen Bradley
-Power available light – white
-Elapsed time meters– Yokogawa
-Resets operational from the front (external)
-Provide with thermo -mag brkrs
-Fused control transformer
-25% spares and/or spaces for all sizes of
buckets or expandable option
-MCC mounted lighting panels shall be
provided with 25% spare breakers
-Provide connections for motor leads directly
from the motors to the starter. Do not use
intermediate terminal blocks (50 HP and
smaller).
·Rubber Mats (in front of gear)
-HRSD will provide and install at substantial
completion
Emergency Generators
Caterpillar
-Prefer diesel generators
Cummins Onan
-Do not prefer turbine generators
Detroit Diesel
-Engines to be of domestic manufacture
Kohler
whenever possible
John Deere
-4-stroke diesels ONLY
-Parts must be available in 24 hours or less
-Meet EPA and VA DEQ air standards
-Prefer low emission units
-All units shall be Prime Rated
IX- 15
04/01
Item
#
Electrical Equipment/Item
•Generator
TREATMENT PLANT
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
Stamford
-Generators 1MWatt and larger require a two
bearing generator
-The rectifier shall be a brushless, full-wave
bridge.
-300 kW and below at 480 volts bring all leads
out to the terminal box
-400 kW and above – bring out 3 leads and a
neutral (minimum) to the terminal box
-Neutrals shall be sized to full rating (brought
out to the terminal box)
-Temperature rise on generator voltages 4160
& higher shall not exceed Class B rating with
80° C ambient rise. All others shall not exceed
105° C rating.
-Alternator shall have a space heater that
switches off when running.
-Provide for 2/3 winding pitch
-Minimum Class H insulation (operating
temperature class 180° C)
-Provide voltage regulation less than +/- 1%
-Provide 150% minimum overspeed capability
-Provide amortisseur winding
-Provide less than 5% THD (Total Harmonic
Distortion)
-Provide less than 50 TIF (Telephone influence
factor)
IX- 16
04/01
Item
#
Electrical Equipment/Item
·Diesel Engine
TREATMENT PLANT
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
-Heavy-duty, direct-injected, 4-stroke diesel engine
Caterpillar
-Prefer electronically controlled engines
Cummins Diesel
-Provide electronically controlled engines with an
Detroit Diesel
electronic control system that meets or exceeds the
Kohler
operation of the Woodward 2301A series governor
John Deere
-Require vendor to identify the contro l system to be
provided.
-Provide system software and training to use software
and operate the engine
-Provide isochronous frequency regulation (no load to
full load)
-Provide +/- 0.25% steady state frequency regulation
(minimum)
-If electronically governed machines are not available,
then provide a mechanical machine with a Woodward
2301A governor
-Air, fuel and oil filters shall be sized to provide a
minimum of 100 hours of operation before servicing.
Provide a Racor fuel-water separator. The air filter is to
be a dry type with a restriction indicator.
-Provide a Nelson (or Racor) heavy duty crankcase
vapor coalescer.
-Prefer a skid-mounted radiator (most are site specific)
sized to prevent overheating in the most severe
conditions (110°F ambient)
-Exhaust system and muffler shall be a hospital grade
super critical type manufactured out of 304 SS material.
All insulation must be blanket type (non-asbestos),
removable for servicing of exhaust system
-The starting system shall be 24 volt DC
-Provide all diagnostic equipment for complete trouble
shooting (software/technical manuals/hardware)
-Speed sensing shall be provided to protect against
accidental starter engagement into a moving flywheel.
-Provide an adjustable (0-15 minutes) cool down time
-Provide a large red emergency stop push button.
-Low oil pressure, high coolant temperature, overspeed,
and over-crank shall shut down the engine and provide
indicator lights.
-Analog or digital displays shall be provided for coolant
temperature, oil pressure, service hours, engine RPM,
system DC volts and system diagnostic code.
-Provide Kim Hot-Start engine block heater
(thermostatically controlled) set in accordance with
manufacturer’s recommendation (120 ° F – 140° F
degrees).
-Provide vibration isolators between generator set base
and floor
-Provide lifting eyes
-Provide brake mean effective pressure (BMEP)
calculations
IX- 17
04/01
Item
#
TREATMENT PLANT
Electrical and Instrumentation
Standards and Preferences
Electrical Equipment/Item
Recommended/
Specific Criteria
Preferred
Manufacturers
Charles
-Charles Model AA2410, 24 volt chargers or
• Battery Chargers
LaMarche
LaMarche equal
-Automatic, solid state, provide continuous
taper charging
-UL listed, provide with under/over voltage,
current failure and loss of power
acknowledgment
GNB
-Use 8D lead-acid batteries
•Starting Batteries
Dynacell
-Provide a minimum of 2. The batteries shall
provide 1200 CCA each.
-Provide with insulated battery rack
-Provide a 3 year full replacement guarantee
-Provide as a minimum 2 cranking cycles at a
minimum of 30 seconds each
Ingersoll-Rand
-Site Specific
•Air Starter
Pryco
-UL Listed - Double Wall
•Day Tanks
Simplex
-Provide with Oberndorfer gear type pump.
(no substitute)
Pumps with rubber or nitrile impellers will not
be accepted
-Provide with a low level alarm
-Size for 2 hour minimum running time
-Provide a fuel level indicator on the day tank.
Controls
by
-Provide in accordance with EPA and all
•Underground Storage Tanks (UST)
MSA Tank Guard
applicable State and Local standards
Veeder-Root
-Provide with leak detection system
Hersey
-Provide a graduated stick for level measuring
-Provide for stick access and refueling
-Provide with 48-hour fuel tank capacity
Greenheck
-Aluminum or PVC with hardware
•Louvers and Dampers
-Provide for gravity dampers
-Provide anodized aluminum dampers with
nylon bushings
-Steel is not acceptable
-Provide with bird screens readily removable
without removing louvers or dampers
-Designed to limit rainwater in building
Basler
-Volt meter 3 phase & off
• Instrumentation Package
Brown-Boveri
-Ammeter 3 phase & off
GE
-kW
Westinghouse
-PF
-kVA
-kVAR
-Utility grade CTs & PTs
-Metering packages (Reference Item #8)
-Provide 3 phase undervoltage & overcurrent
protection
IX- 18
04/01
Item
#
Electrical Equipment/Item
•System Operation
TREATMENT PLANT
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
-Provide protection such that the two sources
(utility & emergency generator) can never be
closed out of phase.
-Provide approvals by Virginia Power on the
paralleling protection scheme.
-Provide a selector switch to allow the operator
to choose “curtailment” or “loss of power”
(typically set to “loss of power”)
-In the loss of power setting, the system shall
have automatic and manual operation. The
manual operation would be provided in the
event the automatic functions failed.
-If the operator switches to curtailment:
• Depressing a single push button in the
automatic mode will start the engine, parallel
with the utility, ramp the plant load onto the
generator and open the utility breaker.
• Depressing a second push button will ramp
the load back to the utility and shut down the
generators.
IX- 19
04/01
Item
#
Electrical Equipment/Item
•Start Up and Testing
TREATMENT PLANT
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
-Provide factory test data
-Simulate and test all safety equipment. Using
a reactive load bank (0.8PF) run the generator:
15 minutes at idle speed
30 minutes at 25% load
30 minutes at 50% load
60 minutes at 75% load
120 minutes at 100% load
15 minutes at 25% load
15 minutes at 0% load (cool down)
off
-Record stator, bearing, oil, ambient, and water
temperatures every 15 minutes
-Record speed, voltage and amperage at 15
minute intervals as well as just prior to and
after a load change
-Hook up the generator to the main switchgear.
Perform all automatic and manual functions a
minimum of three times each. The plant will
load the generators as much as possible.
Particular attention should be observed to the
larger starting loads. Record same parameters
every 15 minutes and before and after changing
load. Tests to be witnessed by HRSD
Automotive Supervisor and HRSD Electrical
Engineer.
4
Energy Efficient Motors
5
Sump Pumps
6
Level Sensing Systems
Zoeller Co
IX- 20
04/01
-Create and attach to the switchgear detailed
instructions. The instructions shall be
laminated. The instructions shall be simple
enough for anybody to pick them up and
operate the diesel generator set.
-See HRSD Electric Motor Specifications in
Appendix F.
-Provide ammeters on motors 50 HP & larger
-120 volt
-Plug into receptacle
-Float controlled
Item
#
Electrical Equipment/Item
•Bubbler Type
•Ultrasonic
•Capacitance
TREATMENT PLANT
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
-Complete purged air bubbler system for
sensing wet well liquid level which generates
and transmits level signals to control pump
operations
-Provide a pressure sensing device (Foxboro or
equal)
-Provide duplex air compressors mtd. on 30
gal. Horizontal receiving tank (Bell & Gossett
or equal)
-Provide push button for manual purging of
bubbler piping
-Provide manual alternation of air compressors
-Provide lead/lag switch – no off
-Provide panel mounted 4 ½” 0 level gauge
-Oil-less compressor with 120 volt, 60 cycle,
single phase motor with integral thermal
overload protection
-Provide pressure activated switches for point
applications (Barksdale)
Milltronics
-Microprocessor
-FM approved (frequency modulation)
Warrick
•Pressure Transmitters
Foxboro
•Float Balls
Fisher-Rosemont
•Pressure Sensing System
7
-Provide Red Valve Pressure Transmitters
-Provide Ashcroft Gauges
-Provide Series 40 pressure sensor
-Provide 1AP20 absolute pressure electronic
transmitter
-Provide Viton Boots
-See Standard Detail “Pressure Reducing
Station Pressure Sensor Detail”
Variable Speed Drives (VSDs)
IX- 21
04/01
Item
#
TREATMENT PLANT
Electrical and Instrumentation
Standards and Preferences
Electrical Equipment/Item
Recommended/
Specific Criteria
Preferred
Manufacturers
Safetronics
-Provide a programmable ramp time
•Variable Frequency Drives (VFDs)
Control Techniques
-Provide input reactors
-Pulse Width Modulated (PWM)
-12 pulse drives are required. 6 pulse drives
are not acceptable.
-Use IGBTs
-VFD must be able to be isolated and bypassed
(manual operation) allowing the motor to
operate across the line at full-load speed and
current. Site Specific.
-Provide manual isolation and bypass
capability
-Automatic restart on power disruption
-Tune out a minimum of 3 frequencies
-Hand/Off/Automatic (HOA) selector switch
-Manual speed control by potentiometer or
keypad (door mounted)
-Tune drive to motor with a harmonics meter
-Provide an input circuit breaker for short
circuit protection
-The controller electronics shall contain
indicators of the following conditions:
Undervoltage
Overvoltage
Over temperature
Memory failure
Emergency Stop
Ground fault
Instantaneous overcurrent
-Provide a NEMA 12 free standing enclosure
with thermostatically controlled ventilation and
dust filters
-Mount the resets & appropriate indicator
lighting on the front of the drive or the outside
of the box.
-Do not prefer DC VSDs
•DC Drives
•Eddy Current Brake Systems
-Do not prefer Eddy Current clutch systems
8
Metering Packages for Switchgear, MCCs
or Individual Motors
IQ Plus
Power Logic
Multilin
9
PLCs
Omron
Allen Bradley
Square D
Siemens (TI)
IX- 22
04/01
-Provide cumulative watt-hour meters on each
MCC, or specific motor.
-Provide a meter on each MCC to indicate 3
phase parameters on the MCC, i.e., volts, amps,
kW, PF, kVA, kWh, etc.
-Provide with motors 200 HP and above
-Provide functional descriptions, the
application program, the job-specific program
data and a copy of the as-built software
documentation
-Include PLC fail indicator
Item
#
Electrical Equipment/Item
10
Exhaust Fans
11
Lighting
•Incandescent
•Florescent Light
•Metal Halide
•HPS
•LPS
•Mercury Vapor
•Emergency Lighting
•Exit Lighting
12
•High-Mast Lighting
Concrete Housekeeping Pads
TREATMENT PLANT
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
ILG
-Corrosion resistant including hardware
Dayton
-Must be explosion proof in hazardous areas
Greenheck
Airovent
Holophane
-Provide proper levels of lighting over major
Hubbell
equipment including switchgear, generators,
Thomas
pump motors, and controls. Minimum Lighting
Crouse-Hinds
levels should conform to the IES lighting
handbook.
-ALTO or equivalent lighting shall be used to
limit the mercury content of the lighting.
-Non fluorescent fixtures shall be metal halide
-Exterior lights shall be placed on a single
photo cell (within reason).
Crouse Hinds
-Explosion proof in hazardous areas
Holophane
-Industrial areas
Holophane
-Provide with low temp ballasts
-Provide with lens and gaskets in chemical
rooms
-Do not provide florescent lighting and controls
on the same circuit.
-Provide electronic ballasts with T-8 bulbs
Holophane
-Suitable in high bay areas
-Provide quick strike fixtures
-Wall-paks are suitable inside or Outside
-Not acceptable for any application
-Not acceptable for any application
-Not acceptable for any application
Dual Lite
-Dual Lite GMM-EL-W2 in admin areas
Emergency Lite
-Emerg Lite PRO-2 in corrosive areas
-Wall-paks are provide by HRSD
Dual Lite
-Highly visible 24hours/day for life (self
Lithonia
illuminating)
-Provide lighted only if required
Holophane
Site Specific
-Provide a minimum of 4 inch thickness under
Switchgear & MCCs and around conduits at
floor penetrations
-Chamfer all edges
IX- 23
04/01
Item
#
13
Electrical Equipment/Item
Conduit and Conduit Systems
TREATMENT PLANT
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
-Provide three separate conduit systems. One
for power circuits >600 volts, one for power
circuits less than 600 volts, and one for
communication circuits.
-Use compression type lugs only when splicing
is specifically approved.
-Ream and chamfer all edges
-EMT or IMC are not preferred
-All flexible conduit shall be liquidtite or equal
-Provide ¾ inch minimum size
-Do not use plastic anchors
-Seal conduits with a silicone product as
necessary (in the manholes to the buildings)
-Administrative areas (plenum) can use EMT
down to ½ inch (lighting only)
-Label all conduits inside of building
-Place metal tags on cables in manholes
-See architectural and coatings standard for
markings and coatings
•Spare Conduits
•PVC Coated (inside and out )
Robroy
Ocal
Perma -Cote
•PVC
•Galvanized
•Tools Used
•Patching/Repair
•Flex – Liquidtite & Fittings
•Εxplosion Proof Fittings
Crouse Hinds
Appleton
•Fixtures & Fittings
•Struts and Straps
-Use appropriate fittings and materials
-To suit conduit materials
-Use matching fasteners
-In outside, wet or damp areas use SS fasteners.
-Over 6” x 6” are to be hinged
-Gasketed
-Use SS/aluminum in outside/wet areas
-Use PVC coated reinforced fiberglass in
hazardous and chemical areas
-Appropriately locate above dropped ceilings
-Do not splice wire
-Place metal tags on cables in manholes
•Pull Boxes (wire pulled through) and
Junction Boxes (wires terminated
inside)
14
•Wire Hangers
Wire
IX- 24
04/01
-Provide with service entrance
-Add appropriate spares
-Provide in corrosive areas, underground (not
encased), chemical areas, chemical
containment areas, outside and damp areas.
Provide with appropriate fittings, boxes and
touch-up material
- Underground/encased reinforced concrete
-Can replace RGS in duct banks where EMI is
not a threat
- Provide in all other areas not covered by PVC
and PVC coated
-Use suitable tools with conduit
-Use appropriate material to patch and repair
-Use Myers hubs where suitable
Item
#
Electrical Equipment/Item
•Telephone
•THHN, THWN
TREATMENT PLANT
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
-Minimum wire gauge #22-24 AWG
-Provide plenum rated cable in return air
plenums
-Follow NEC color coding
-All wire #14 AWG and larger shall be
stranded wire, rated for 600 volt
-#12 minimum wire size for typical
applications
•Instrumentation
•High Voltage Cable
•Heat Tracing
15
Relays
•Industrial
•Electronic
16
17
Lockout / Tagout à Safety
Switches / Receptacles / Plugs
18
Heaters
•Electric
•Gas
Letco-Dual Controls
Chromolox
Wesco
Allen Bradley
Cutler Hammer
IDEC
Potter Brumfield
Agastat
Pass & Seymour
Hubbell
Crouse Hinds
Qmarts
Dayton
Space Ray
Dayton
IX- 25
04/01
-Do not combine analog circuits (twisted
shielded pair-TSP) with other circuits in the
same conduit
-Instrumentation control wires should be sized
accordingly (#18 stranded wire recommended)
-DC wire shall be color-coded blue
-AC wire shall be color-coded red
-Externally powered circuits (entering/leaving
the cabinet) shall be color-coded yellow
Note: Cabinets with multiple sources must
be clearly marked as such.
-Follow appropriate code
-Provide thermostatically controlled with
chemical systems
-Provide self limiting with other systems
-Provide with insulation
-Provide with protective outer coating
-Provide with indicator light
-Provide with SS leads in corrosive areas
-Fixed base
-Plug-in/ice cube type
-Provided for in Division 1 of specifications
-Do not use wire binding screw type
receptacles or switches
-Provide for dedicated circuits for sump pumps
-Provide power receptacle in control cabinets.
-Provide a neutral for each circuit, multi wire
circuits are not allowed without special
approval and then with a two-pole breaker
Item
#
Electrical Equipment/Item
19
Electrical Drawings
20
Safety Switches (fused or unfused)
21
Transformers
•Dry
•Oil Filled
22
TREATMENT PLANT
Electrical and Instrumentation
Standards and Preferences
Recommended/
Specific Criteria
Preferred
Manufacturers
-P&IDs are to conform to ISA modified
standards (Consulting engineer to provide)
-Provide functional descriptions with the
P&IDs (Consulting engineer to provide)
-Provide Point to Point connection drawings.
Contractor shall develop. Review and approval
by the engineer shall be prior to installation.
-Label all conduits inside building
-Place metal tags on cables in manholes
-Provide final conduit & cable schedule on disk
(AutoCAD).
Square D
-Light duty safety switches are unacceptable
Cutler Hammer
-Must be pad lockable
Westinghouse
Allen Bradley
Square D
-No Aluminum Wire
Cutler Hammer
-Provide 220° C insulation system for 15kVA
Westinghouse
and larger
GE
-Provide 180° C insulation system for
transformers less than 15kVA
-Transformers shall handle a 15% overload
without exceeding the insulation rating
Square D
Cutler Hammer
Westinghouse
GE
Metering Vaults/Pits
-Provide receptacle and receptacle location per
HRSD direction
-Provide sump pumps as needed
•Power Requirements
•Exhaust Fans
23
Pressure Sustaining/Regulating Valves
-Provide two receptacles with wp covers
-See Exhaust Fans
-Size for 12 air changes per hour (minimum)
-Bring exhaust duct to within 6” AFF
KTM
Foxboro
Clow
•Butterfly Valves
•V Notch Plug Valves
IX- 26
04/01
-Butterfly valves are to be used in pairs
-Provide 4-20 mA operated valves. Do not use
pulsed control valves
-Prefer Automatic Controls of Virginia or
Valve Automation for actuator applications
- Use EIM actuators
Item
#
24
Electrical Equipment/Item
•V Notch Ball Valves
Flow Meters
•Parshall Flume
•Magnetic
•Ultrasonics (insertion or strap on)
25
•Venturi
RTUs
26
•Antenna
•Junction box
•Sensors
Louvers/Dampers
27
Transfer Switches
28
On-Line Vibration Monitors
29
Panel Meters
•Analog
•Digital
•Elapsed Time
•Pulse Counters
•Isolators
04/01
TREATMENT PLANT
Electrical and Instrumentation
Standards and Preferences
Recommended/
Preferred
Manufacturers
Brooks
Foxboro
Yokogawa
Fuji
Polysonics
Panametrics
Motorola
HRSD to provide
Greenheck
Cutler Hammer
Westinghouse
Square D
ASCO
Zenith Transfer
switches are not
acceptable
Bentley-Nevada
Sole Source
GR/Yokogawa
Simpson
Yokogawa
Red Lion
Simpson
Yokogawa
Omron
Action Pack
AGM
IX- 27
Specific Criteria
-Size for average flows
-Use ultrasonic level indicator
-Use for control or billing applications
-Ensure vendor is clear on application
-Prefer not to use for control
-Generally, prefer not to use
-Motorola – Moscad
-Physical size 24”x24”x8” in a NEMA 4x
enclosure
-Provide gravity dampers for all applications
-See Emergency Generators (Louvers and
Dampers)
-Nema 12 Enclosure unless required otherwise.
-IQ Plus Monitoring Device
-3300 series or latest model
-Others are unacceptable
Item
#
30
Electrical Equipment/Item
•Signal Converters
Analyzers/Monitors
•Combustible (LEL)
•pH
MSA
Detronics
MSA
Detronics
Foxboro
•ORP
Foxboro
•O2
COSA
•DO
Royce
•Cl2
Wallace & Tiernan
Prominent
Ronan
LFE
Yokogawa
•H2S
• Alarm Panel
•Temperature Controllers
31
Miscellaneous Instrumentation
•PID Controllers
•Electric Actuators
32
TREATMENT PLANT
Electrical and Instrumentation
Standards and Preferences
Recommended/
Preferred
Manufacturers
AGM
Yokogawa
•Valve Actuators
EIM
Bernards
Honeywell
•Louver Actuators
Honeywell
•Multipoint Recorders
Yokogawa
•Opacity
Fisher/Rosemont
Electrical Equipment Testing
-Prefer not to use
-Provide Foxboro only
-Model YSI 170
-Dual-Loop Controller
-HR 2400
-30-Point Recorder
-Provide a RS-232
EPA Standards for the specific criteria.
-Provide testing in off-peak hours or switch off
an equivalent amount of load prior to testing
IX- 28
04/01
Specific Criteria