SECTION 15056
COMMON MOTOR REQUIREMENTS FOR FIRE SUPPRESSION EQUIPMENT
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
1.2
Drawings and general provisions of the Contract, including General and Supplementary Conditions and
Division 01 Specification Sections, apply to this Section.
SUMMARY
A.
1.3
Section includes general requirements for single-phase general-purpose, horizontal and vertical, small
and medium, motors for use on ac power systems up to 600 V and installed at equipment manufacturer's
factory or shipped separately by equipment manufacturer for field installation.
COORDINATION
A.
Coordinate features of motors, installed units, and accessory devices to be compatible with the
following:
1.
Motor starters and controllers.
2.
Torque, speed, and horsepower requirements of the load.
3.
Ratings and characteristics of supply circuit and required control sequence.
4.
Ambient and environmental conditions of installation location.
PART 2 - PRODUCTS
2.1
GENERAL MOTOR REQUIREMENTS
A.
Comply with requirements in this Section except when stricter requirements are specified in fire
suppression equipment schedules or Sections.
B.
Comply with NEMA MG 1 unless otherwise indicated.
C.
Comply with IEEE 841 for severe-duty motors.
2.2
MOTOR CHARACTERISTICS
A.
Duty: Continuous duty at ambient temperature of 40 deg C and at altitude of 3300 feet above sea level.
B.
Capacity and Torque Characteristics: Sufficient to start, accelerate, and operate connected loads at
designated speeds, at installed altitude and environment, with indicated operating sequence, and without
exceeding nameplate ratings or considering service factor.
2.3
MOTORS
A.
Description: NEMA MG 1, Design B, medium induction motor.
WASO-HPTC-Thomas Farm (Araby) House - Systems Upgrade
Final Construction Document Submission
Monocacy National Battlefield
PMIS No. 98439
15056 - 1
December 31, 2009
Common Motor Requirements for Fire Suppression Equipment
B.
Efficiency: Energy efficient, as defined in NEMA MG 1.
C.
Service Factor: 1.15.
D.
Multispeed Motors: Variable torque.
1.
For motors with 2:1 speed ratio, consequent pole, single winding.
2.
For motors with other than 2:1 speed ratio, separate winding for each speed.
E.
Multispeed Motors: Separate winding for each speed.
F.
Rotor: wound, squirrel cage.
G.
Bearings: Regreasable, shielded, antifriction ball bearings suitable for radial and thrust loading.
H.
Temperature Rise: Match insulation rating.
I.
Insulation: Class F
J.
Code Letter Designation:
K.
2.4
1.
Motors 15 HP and Larger: NEMA starting Code F or Code G.
2.
Motors Smaller than 15 HP: Manufacturer's standard starting characteristic.
Enclosure Material: Cast iron for motor frame sizes 324T and larger; rolled steel for motor frame sizes
smaller than 324T
ADDITIONAL MOTOR REQUIREMENTS
A.
Motors Used with Solid State, Reduced-Voltage, and/or Multispeed Controllers: Match wiring
connection requirements for controller with required motor leads. Provide terminals in motor terminal
box, suited to control method.
B.
Motors Used with Solid State or Variable Frequency Controllers: Ratings, characteristics, and features
coordinated with and approved by controller manufacturer.
C.
1.
Windings: Copper magnet wire with moisture-resistant insulation varnish, designed and tested to
resist transient spikes, high frequencies, and short time rise pulses produced by pulse-width
modulated inverters.
2.
Energy- and Premium-Efficient Motors: Class B temperature rise; Class F insulation.
3.
Inverter-Duty Motors: Class F temperature rise; Class H insulation.
4.
Thermal Protection: Comply with NEMA MG 1 requirements for thermally protected motors.
Severe-Duty Motors: Comply with IEEE 841, with 1.15 minimum service factor.
WASO-HPTC-Thomas Farm (Araby) House - Systems Upgrade
Final Construction Document Submission
Monocacy National Battlefield
PMIS No. 98439
15056 - 2
December 31, 2009
Common Motor Requirements for Fire Suppression Equipment
2.5
A.
FIRE PUMP TRANSFER SWITCH, STARTER, AND CONTROLLER ASSEMBLY
The main fire pump controller shall be a factory assembled, wired and tested unit and shall conform to
all the requirements of the latest edition of NFPA 20, Standard for the Installation of Stationary Pumps
for Fire Protection and NFPA 70, National Electrical Code.
1.
The controller shall be listed by Underwriters Laboratories, Inc., in accordance with UL218, Standard for Fire Pump Controllers and approved by Factory Mutual.
2.
Basis of design: Firetrol series #FTA1900
B.
Starting Method
1.
The controller shall be of the combined manual and automatic type designed for Solid State Soft
Starting of the fire pump motor having the horsepower, voltage, phase and frequency rating specified. The controller components shall be housed in a NEMA ‘4X’, free standing enclosure.
C.
Withstand Ratings (Short Circuit Current Ratings)
1.
D.
E.
All controller components shall be front mounted, wired and front accessible for maintenance.
The minimum withstand rating of the controllers shall not be less than 100,000 Amps RMS
Symmetrical at 600 Volts.
Isolation Switch and Circuit Breaker
1.
The controller shall include a motor rated combination isolating disconnect switch/circuit breaker,
mechanically interlocked and operated with a single, externally mounted handle. When moving
the handle from OFF to ON, the interlocking mechanism shall sequence the isolating disconnect
switch ON first, and then the circuit breaker. When the handle is moved from ON to OFF, the interlocking mechanism shall sequence the circuit breaker OFF first, and then the isolating disconnect switch.
2.
The isolating disconnect switch/circuit breaker shall be mechanically interlocked so that the enclosure door cannot be opened with the handle in the ON position except by a hidden tool operated defeater mechanism. The isolating disconnect switch/circuit breaker shall be capable of being
padlocked in the OFF position for installation and maintenance safety, and shall also be capable
of being locked in the ON position without affecting the tripping characteristics of the circuit
breaker. The controller door shall have a locking type handle and three-point cam and roller vault
type hardware. The circuit breaker trip curve adjustment shall be factory set, tested and sealed for
the full load amps of the connected motor. The circuit breaker shall be capable of being field
tested to verify actual pick up, locked rotor, and instantaneous trip points after field installation
without disturbing incoming line and load conductors.
Operator Interface
1.
The fire pump controller shall feature an operator interface with user keypad. The interface shall
monitor and display motor operating conditions, including all alarms, events, and pressure conditions. All alarms, events, and pressure conditions shall be displayed with a time and date stamp.
The display shall be a 2-line, 20-character, vacuum fluorescent, dot matrix type designed to allow
easy viewing from all angles and in all light conditions. The display and interface shall be NEMA
rated for Type 4X protection and shall be fully accessible without opening the controller door.
The display and user interface shall utilize multiple levels of password protection for system security. A minimum of 3 password levels shall be provided.
WASO-HPTC-Thomas Farm (Araby) House - Systems Upgrade
Final Construction Document Submission
Monocacy National Battlefield
PMIS No. 98439
15056 - 3
December 31, 2009
Common Motor Requirements for Fire Suppression Equipment
F.
Ammeter/Voltmeter
1.
The fire pump controller operator interface shall be capable of displaying RMS digital motor voltage and current measurements for all phases simultaneously. Displays requiring push-button and
selector switches to toggle between phases or current and voltage shall not be accepted.
G.
Digital Status/Alarm Messages
1.
The digital display shall indicate text messages for the status and alarm conditions of:
● Motor On
● Sequential Start Time
● Minimum Run Time/ Off Delay Time ● Local Start
● Remote Start
● System Battery Low
● Fail to Start
● Over Voltage
● Under Voltage
● Low Suction Pressure
● Locked Rotor Trip
● Emergency Start
● Over Frequency
● Motor Over 320
● Motor Overload
● Pressure Error
The Sequential Start Timer and Minimum Run Timer/ Off Delay Timer shall be displayed as numeric values reflecting the value of the remaining time.
2.
LED Visual Indicators
LED indicators, visible with the door closed, shall indicate:
● Power On
● Emerg. Isolating Switch Open
● Pump Running
● Low System Pressure
● Alarm
● Transfer Switch Normal
● Deluge Open
● Transfer Switch Emergency
● Phase Failure
● Phase Reversal
● Interlock On
In addition to the standard alarm contacts required by NFPA20, the digital display module shall
have N.O. and N.C. contacts for remote indications of any digitally displayed alarm and N.O. and
N.C. contacts for remote indication.
3.
Data Logging
The digital display shall monitor the system and log the following data:
● Motor Calls/Starts
● Elapsed Motor Run Time
● Last Trip Currents
● Elapsed Power On Time
● Last Breaker Trip
● Maximum Run Currents
● Minimum Voltages
● Minimum Run Currents
● Maximum Voltages
● Last Motor Run Time
● Last Phase Failure
● Last Start Currents
● Last Phase Reversal
● Min/Max Frequency
● Min/Max Pressure
4.
Event Recording
Memory - The controller shall record all operational and alarm events to system memory. All
events shall be time and date stamped and include an index number- The system memory
shall have the capability of storing 3000 events and allow the user access to the event log via
WASO-HPTC-Thomas Farm (Araby) House - Systems Upgrade
Final Construction Document Submission
Monocacy National Battlefield
PMIS No. 98439
15056 - 4
December 31, 2009
Common Motor Requirements for Fire Suppression Equipment
the user interface. The user shall have the ability to scroll through the stored messages in
groups of 1, 10, or 100.
H.
Solid State Pressure Transducer
1.
The controller shall be supplied with a solid state pressure transducer with a range of 0-300 psi
(0-20.7 bar) ±1 psi. The solid state pressure switch shall be used for both display of the system
pressure and control of the fire pump controller. Systems using analog pressure devices or mercury switches for operational control will not be accepted.
2.
I.
The START, STOP and SYSTEM PRESSURE shall be digitally displayed and adjustable
through the user interface. The pressure transducer shall be mounted inside the controller to prevent accidental damage. The pressure transducer shall be directly pipe mounted to a bulkhead
pipe coupling without any other supporting members. Field connections shall be made externally
at the controller coupling to pre-vent distortion of the pressure switch element and mechanism.
Operation
1.
A digitally set On Delay (Sequential Start) timer shall be provided as standard. Upon a call to
start, the user interface shall display a message indicating the remaining time value of the On Delay timer.
2.
The controller shall be fully programmable to allow up to 8 custom alarm messages to be displayed on the user interface.
3.
A nonadjustable restart delay timer shall be provided to allow the residual voltage of the motor to
decay prior to restarting the motor. At least 2 seconds, but no more than 3 seconds, shall elapse
between stopping and restarting the pump motor.
4.
A weekly test timer shall be provided as standard. The controller shall have the ability to program
the time, date, and frequency of the weekly test. In addition, the controller shall have the capability to display a preventative maintenance message for a service inspection. The message text and
frequency of occurrence shall be programmable through the user interface.
5.
A Lamp Test feature shall be included. The user interface shall also have the ability to display the
status of the system inputs and outputs.
PART 3 - EXECUTION (Not Applicable)
END OF SECTION 15056
WASO-HPTC-Thomas Farm (Araby) House - Systems Upgrade
Final Construction Document Submission
Monocacy National Battlefield
PMIS No. 98439
15056 - 5
December 31, 2009
Common Motor Requirements for Fire Suppression Equipment