Inductive Components Manufacturing, Inc.
URC-24 3-Phase Recloser Control (PN 20001)
Operation Manual 3/7/05
REVISION 3.0, MARCH 07, 2005
Operation Manual
URC-24 Recloser Control
Table of Contents
Table of Contents
URC-24 Introduction
URC-24 Panel Layout
URC-24 L.E.D. Description
URC-24 Display
URC-24 Security Code
URC-24 Function Codes
URC-24 Editing Keys
URC-24 Manual Operation
URC-24 Remote/SCADA Functions
1
2
3
5
5
6
6
6
8
9
URC-24 Appendix
Location of Ports
Port 5 Description
SCADA Connector
SCADA Cable
SCADA Terminal Plate (Optional)
URC-24 Wiring Diagram
URC-24 Wire Harness
Microprocessor Time Current Curves
Thermal Demand Metering
Quick Check Reference
Page 1
10
11
12
13
14
15
16
17
21
22
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URC-24 Recloser Control
Introduction
The new URC-24 advanced technology UPS and Micro based Recloser Control, was
designed expressly as a cost effective retrofit control for McGraw - Edison Form 2, 3, 3A
Recloser Controls. It interfaces directly to Kyle three phase vacuum Reclosers.
The URC-24 is powered from a micro-controlled un-interruptible power supply and an
intelligent battery charger to maximize reliability and reduce maintenance.
The URC-24 advanced micro-based programmable controller enables the customer to
select the basic hydraulic curves of the Form 2 / 3 series Recloser controls as well as eight
additional trip and fault curves to optimize performance. In addition the controller has
basic "dry-contact" Supervisory Control And Data Acquisition (SCADA) capability.
All of these advanced features are presented at an extremely cost-effective price. The
control is covered by a 2 year limited warranty.
The control includes detailed instructions designed for utility engineers and technically
qualified personnel. It is expressly designed to augment the original three phase vacuum
Recloser installation and operation manual from McGraw Edison / Cooper / Kyle Recloser.
WARNING: The control must be removed from service and completely de-energized
electrically before performing service / maintenance and retrofit to URC-24. Failure to do
so can result in severe injury or death.
CAUTION: Precautions listed in these instructions are to prevent equipment and
component damage and possible injury to persons. Specifically, testing, service and
maintenance should be accomplished with the unit disconnected from service, to avoid
accidental and un-intended Recloser responses.
NOTICE: The implementation and or maintenance of this equipment is
to be performed only by fully qualified utility technical personnel.
Fully reading and understanding the original Recloser manuals, and
the URC-24 3-Phase Recloser Control Operation Manual, will help
enable a smooth and successful application and installation of the
equipment.
The URC-24 is certified by ICMI to work on the following Recloser mechanisms.
15kv type: rxe, we, & vwe
25 kv type: vwve
34.5kv type: rve & vwe
Any additional Mechanisms applied to the URC-24 must first be qualified by ICMI
engineering.
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URC-24 PANEL LAYOUT
1.
METER PANEL
2.
1.
3.
2.
4.
5.
6.
7.
8.
9.
10.
CONTROL PANEL
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URC-24 PANEL LAYOUT
METER PANEL
1. 50 VOLT DC METER:
The 50 VDC Meter is used in conjunction with the meter test button to check the
battery voltage. It should read about 25 volts when the test button is pressed.
2. METER TEST BUTTON:
The Meter Test Button is used in conjunction with the voltmeter to test battery voltage.
Press to test voltage and read voltage on meter.
CONTROL PANEL
1. DISPLAY: See Page 5 for details.
2. KEYPAD: See page 5 for details.
3. CONTROL SWITCHES: See page 8 for details.
4. OPEN/CLOSE BUTTONS: See page 8 for details.
5. PROGRAM PORT:
Used by ICMI for test purposes.
6. BATTERY DIAGNOSTIC STATUS: See page 5 for details.
7. AC POWER INDICATOR: See page 8 for details.
8. POWER SOURCE INDICATORS: See page 5 (LED
Description) for details.
9. OPEN/CLOSE INDICATORS: See page 5 (LED Description)
for details.
10.PANEL FUSE (2AMP): See page 8 for details.
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URC-24 L.E.D. Description
A.
A. DIAGNOSTIC/STATUS LED- Has three possible states.
B.
1. The non-blinking state indicates a good battery. Note: A battery is
considered good when the voltage of the series connected two 12V
battery combination is determined to be at least 20VDC?
C.
2. The blinking state indicates a battery pair that has fallen below
approximately 20VDC and AC power is present. The LED blinks
at a rate of 1 second on and 1 second off.
D.
E.
3. The OFF state indicates the battery has fallen below approximately
22VDC and there is no AC power present.
B. DC POWER LED- Indicates there is a battery
STATUS LED’s
C. AC POWER LED- Indicates AC power is
present.
voltage present.
D. OPEN LED- Indicates the Recloser is in the
E. CLOSE LED- Indicates the Recloser is in the
CLOSE position.
OPEN position.
DC POWER UP
The URC-24 also has the ability to power up with only battery power. First, connect the battery cables to the battery
and locate the black momentary switch on the charging board (See pg. 10 for illustration). Next just slide the
switch until you see the Diagnostic/Status LED come on.
URC-24 Display
A. Target Indication: The display will indicate which phase, phases, or ground are involved when the control
operates to lockout. The target will reset after the close button has been depressed.
B. Status Indication: A micro switch inside the Recloser Mechanism provides open and close status. Lockout
will be displayed whenever the control operates to lockout on a fault or whenever the
OPEN button is depressed.
C. Function Number: This displays the function and its value or setting. Functions 1 through 12 correspond
directly to the numbered keys on the keypad. Functions 13 through 19 are also accessed
through the keypad.
D. Setting:
This value is a function code that represents an action that is set in a database under the
current function that is displayed.
A.
B.
C.
D.
URC-24 DISPLAY
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URC-24 KEYPAD
The URC-24 keypad is used in conjunction with the display as
the user interface to the URC-24. The display is divided into
two distinct sections. These sections are referred to as
Function Keys and Editing Keys.
Function Keys: The function keys can access all 19
functions of the URC-24. Keys 1-12 are used to directly
access functions 1-12 as labeled on the keys. To access
functions 13-19 keys 1-7 are pressed twice. See functions
13-19 for details.
FUNCTION
KEYS
EDITING
KEYS
Editing Keys: The editing keys perform specific functions
related to the key it self. See below for a description of the
function of each editing key.
Select:
URC-24 KEYPAD
The SELECT key is used in conjunction with Keys 9 and 10. To read the number of
operations, depress Key 9 (Operations Counter), then press the SELECT key to scroll through
and read each phase and ground count. The display will indicate which phase is being read.
Actual current on each phase and ground can be read in the same manner. Depress Key 10
(Actual Current), then press the SELECT key to read each phase and ground value.
Up & Down Arrows: The Up and Down Arrows are used to change the URC-24 functions after the security code
has been entered. The keys are inactive until the security code is entered.
Enter:
The ENTER key is depressed when a new function value has been selected with the Up and
Down Arrows. The security code must be entered first before any change can be made.
Security Code:
For the function codes to be changed, the security code must be entered first. To do so,
depress Enter, 5, 2, and 7, Enter. Note: If a key has not been touched for more than 60
seconds, the display will blank out and the security code will have to be re-entered.
URC-24 Function Codes
Function 1:
FAST SHOTS. Choices range from 0 to 4 fast operations. Fast Operations are high-speed
operations but follow a specific time current curve. This curve is selected from Function 4.
Function 2:
SHOTS TO LOCKOUT. Choices range from 1 to 4. This function selects the total number of
operations to lockout. At lockout, reclosers are open and automatic operation ceases. Depressing
the CLOSE button or closing remotely via SCADA resets the control system. The number of timedelayed operations is the difference between the number of shots to lockout and the number of fast
shots.
Function 3:
1ST RECLOSE TIME. Choices for first re-close interval are 2, 3, 5, 10, 15, 30, or 45 seconds.
Re-close time is the open or dead time between operations.
Function 4:
2ND & 3RD RECLOSE TIME. Press key once to display second re-close time. Press key a
second time to display the third re-close time. Choices for both are 2, 3, 5, 10, 15, 30, or 45 seconds.
Function 5:
PHASE MINIMUM TRIP. This is the actual trip value ranging from 10 to 800 amps, in 10 amp
increments up to 300 amps and in 20 amp increments from 300 to 800 amps.
Function 6:
FAST CURVES. There are 4 different fast curves (A hydraulic and A, N, and R electronic type).
These curves are virtually instantaneous, with Curve 1 being the fastest and Curve 4 the slowest.
Refer to time current curve graphs for specific curve data. Curve 5 can be found on page 25.
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Function 7:
TIME DELAY CURVE. Nine curves are available. Time delay curves allow for coordination of
down line fuses and Reclosers, but also must coordinate with up-line devices. Careful selection
should be made. The first three curves emulate hydraulic Recloser curves (types B, C, and D). The
next four are more inverse curves and emulate electronic Recloser curves (types B, C, D, or E). All
curves used are industry standard Recloser curves. Curve 9 can be found on page 25. Curve 8 is a
“hold closed” curve for very specific applications.
Function 8:
RESET TIME. Choices are 10, 30, 60, 90, 120, and 180 seconds. Reset time begins on successful
re-close. Successful re-close occurs when the Recloser closes during a sequence of operations on a
fault prior to lockout and the fault current has disappeared (the current has dropped below minimum
trip).
Function 9:
OPERATIONS COUNTER. Displays the number of trip signals the control has sent on each phase
and ground. Use select key to read values of each phase or ground.
Function 10: ACTUAL CURRENT. Displays line current measured from the internal bushing CT. Use the
select key to read values of each phase or ground. Line current sensing is provided from the same
C.T. used to sense fault current.
DEMAND METERING. See attached document “URC24 Thermal Demand
Meter” at the back of manual.
Function 11: GROUND MINIMUM TRIP. This is the actual ground trip value ranging from 10 to 400 amps in
5 amp increments up to 150 amps, then in 10 amp increments from 150 to 400 amps to disable
tripping on curves.
Function 12: DEFINITE GROUND LOCKOUT TIME. Choices range from 1 to 15 Seconds in 1-second
increments. Use this function for setting the definite Ground lockout time only. This works in
conjunction with Function 17.
Function 13: SERIAL NUMBER. Pressing the Function 1 key twice, after entering the security code, will
display the serial number of the control.
Function 14: OPERATING MODE. Pressing the Function 2 key twice will display the mode number 1: three
phase trip, three phase lockout.
Function 15: GROUND TRIP OPERATIONS. Depress the Function 3 key twice.
Select:
“0” - All ground detection off.
“1” - One shot to lockout on ground fault.
“S2” - Same sequence to lockout as phase. The number of fast and
slow operations on ground will be the same as phase.
NOTE: Setting the GROUND TRIP BLOCK switch to BLOCK is the same as selecting “0” for
Function 15. The NON-RECLOSE switch will also set both ground and phase trip to one shot
regardless of settings on Functions 2 or 15. For very unbalanced systems or special applications,
ground detection may not be needed. By selecting “0”, the user is assured that ground is off
regardless of the GROUND TRIP BLOCK switch position. For other applications, one shot may be
required on ground while multiple shots are required on phase.
Function 16: THIRD RECLOSE TIME. Depress the Function 4 key twice. See Function 4.
Function 17: DEFINITE GROUND LOCKOUT. Depress Function 5 key twice. This key sets the minimum
trip level on Definite Time Ground Lockout. Do not confuse Definite Ground Lockout with
Ground Minimum trip. Definite time ground Lockout is also available even if ground tripping is
selected. The definite time ground lockout level can be set at a value different from the phase or
Ground trip levels. Definite time ground lockout provides a third level of Protection. When definite
time ground lockout is selected, the control will time on a ground fault. After the preset time has
expired, with no operations on phase or ground, all three phases lock out. Normally, the definite
time ground lockout value is set below the ground trip value. Definite time ground lockout may be
desired in areas prone to high impedance faults as an additional level of protection. To disable
Definite Time Ground Lockout, set to 400 amps. This is used in Conjunction with Function 12.
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Function 18: FAST CURVES FOR GROUND. Depress the Function 6 key twice. Choose 1, 2, 3, or 4 which
corresponds to A hydraulic type, and A, N, and R electronic type curves. Curve 5 can be found on
page 25. Note: curves for ground are same as phase.
Function 19: TIME DELAY CURVES FOR GROUND. Depress the Function 7 key twice. Choose a curve
from 1 to 9, which corresponds to B, C, or D\ hydraulic type and B, C, D, E, or Hold Closed
electronic type respectively. Caution: curve 8, the Hold Closed curve, is for special applications.
Curve 9 can be found on page 25.
URC-24 MANUAL OPERATION
The operating functions consist of the two push buttons and the three toggle switches below the keypad (Shown at
bottom of page). The OPEN and CLOSE buttons trip and close all three phases at the same time. By holding the
CLOSE button in, the control skips its fast curve and automatically goes to a time delay curve to allow for a cold
load pick-up. This prevents the control from using its fast curve to react to the inrush current associated with
powering up a cold load. For example, if a control’s minimum trip is set at 100 amps and both it’s time delay and
fast curve’s are set at number 1, then the control will trip from an inrush current just over 100 amps. The reason
being is the number 1 setting of the fast curve gives the control a .5 second (A hydraulic curve) opportunity to pick
any inrush current; however, the time delay curve gives up to 5 seconds (B hydraulic curve). Generally, 5 seconds is
enough time for an inrush current to diminish below its minimum trip setting, which in this case would be 100 amps.
In short, if the CLOSE button is only pressed momentarily, the control times on its fast curve. By skipping to the
delay curve when the CLOSE button is held down, additional time is gained to pick up the load.
The Non-Reclose switch in the non-reclose position will put the recloser into single-shot mode. In non-reclose
mode, Function 2 (Shots to Lockout) will be ignored and the control will only operate one shot to lockout.
The Remote/Local switch is for supervisory control. In the local mode, supervisory signals are ignored. For
example, if a supervisory signal is sent to trip the control, the control will not trip when it is in local mode. In
remote mode, if that same trip signal were repeated, the control would then trip. In essence, if anything is touched
on the control panel other than the keypad while in remote mode, nothing will happen. At the same time, if those
same signals were generated from the supervisory system then the control would respond accordingly. For
instance, in remote mode, the supervisory system controls whether or not the control is in non-reclose or ground trip
block. Likewise, if the control’s non-reclose switch is in non-reclose, the supervisory system can set the control for
normal re-closing. In short, this switch determines if the control is going to use the control panel switches as in
figure 3 or from SCADA described in the following section. Regardless of whether or not the control is in local or
remote, the keypad still determines how the control responds to faults.
The Block/Ground Trip switch in the block position will disable the definite time ground lockout and ground trip
on curves. In the ground trip position those two features are active.
The Power lamp indicates control has power. The Panel Fuse is for protection of the electronics.
The Data Port (Not Shown) is used at the factory to program the operating system into the control. This is its only
function.
URC-24 MANUAL CONTROL AND POWER SECTION
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Remote / SCADA Functions
The URC-24 can be operated and monitored remotely. The remote
functions are provided by dry type contacts so no protocol or protocol
converters are used or required. An optional SCADA cable is available
to hard wire a user provided RTU or for direct hardwiring. Also an
I.C.M.I. SCADA tester is available for testing the remote functions. The
following remote features are available.
Lockout: A remote lockout signal will trip and lockout all three phases.
L.E.D.
Port
Non-reclose: A remote signal can change the control to either normal
operation or one shot, regardless of the position of the non-reclose
switch on the URC-24 control panel.
Non-reclose Indication: Provides status back if control is in nonreclose mode.
Close: All three phases will close when a remote close signal is sent. If
the remote close signal is maintained, cold load pick up or timing on
delayed curves only is activated.
SCADA
Port
Ground Trip Block: Both definite time ground lockout and ground
tripping on curves can be blocked or unblocked, regardless of the
position of the URC-24 control panel ground trip block switch.
Ground Trip Block Indication: Provides status back to system if
control is in ground trip block mode.
Open Indication: Open status of each phase is provided.
Close Indication: Close status of each phase is provided.
Remote Indication: Provides the supervisory system the status of the
remote/local switch on the control panel. If the URC-24 switch is in
“Local“, remote functions, other than status, can not be activated.
AC Indication: Has three possible states.
1.
The non-blinking state indicates a good battery. Note:
A battery is considered good when the double battery
combination is at least 20VDC.
CT Input
Open/Close
Output
2. The blinking state. This indicates a battery that has
fallen below approximately 20VDC and AC power is
present. The LED blinks at a rate of 1 second on and 1
second off.
3. The off state. This indicates when the battery has fallen
below approximately 22VDC and there is no AC power
present.
DC
Power
Up
CPU Acknowledge: Provides input back to system that control is
functioning properly.
URC-24 IO Port
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APPENDIX
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OPTIONAL TERMINAL PLATE FOR SCADA CONNECTION
The photo below depicts the terminal connections for the optional SCADA terminal for the URC-24
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URC-24 Wiring Diagram
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Misc. Grn 2
Misc. Wht
#1
#15 and Misc. Red
#14
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URC-24 Microprocessor based
Time Current Curves
Control response Time
Hydraulic Time Delay Curves
Function key #7
Control Response Time
Curves B, C, & D: Average response time for one
operation; variations +/- 10% or +/- .01 second,
whichever is greater.
Add the following interrupting time to control
response time to obtain average clearing time
Recloser
Interrupting
Type
Time
RE, RXE
0.040
WE
0.045
VSA
0.025
The above reclosers have been verified to work
with the URC-24. Others are likely to work but
are not verified.
Note: It is known that the URC-24 will not work
with "MS" reclosers.
URC-24 Curve Time current
CURVE
CODE
1
B
2
C
3
D
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URC-24 Microprocessor based
Time Current Curves
Control Response Time
Electronic Time Delay Curves
Function key #7
Control Response Time
Curves B, C, & D: Average response time for one
operation; variations +/- 10% or +/- .01 second,
whichever is greater.
Add the following interrupting time to control
response time to obtain average clearing time
Recloser
Interrupting
Type
Time
RE, RXE
0.040
WE
0.045
VSA
0.025
The above reclosers have been verified to work
with the URC-24. Others are likely to work but
are not verified.
Note: It is known that the URC-24 will not work
with "MS" reclosers.
URC-24 Curve Time current
CURVE
CODE
4
B
5
C
6
D
7
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URC-24 Microprocessor based
Time Current Curves
Control Response Time
Fast curves
Function key #6
Control Response Time
Curves A & A*: Maximum response time for
one operation; variations negative.
Curves N & R: Average response time for one
operation; +/- 10% or +/- .01 second, whichever
is greater.
A* is hydraulic type fast curve.
Add the following interrupting time to
control response time to obtain average
clearing time
Recloser
Interrupting
Type
Time
RE, RXE
0.040
WE
0.045
VSA
0.025
The above reclosers have been verified to
work with the URC-24. Others are likely
to work but are not verified.
Note: It is known that the URC-24 will
not work with "MS" reclosers.
URC-24 Curve Time current
CURVE
CODE
1
A*
2
A
3
N
4
R
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URC-24 Microprocessor based
Time Current Curves
Average Clearing Time
Time Delay Curves
Function key #7
Control Response Time
Curves 8* & 135: Average response time for one
operation; variations +/- 10% or +/- .01 second,
whichever is greater.
A* is hydraulic type fast curve.
Add the following interrupting time to control
response time to obtain average clearing time
Recloser
Interrupting
Type
Time
RE, RXE
0.040
WE
0.045
VSA
0.025
The above reclosers have been verified to work with
the URC-24. Others are likely to work but are not
verified.
Note: It is known that the URC-24 will not work
with "MS" reclosers.
URC-24 Curve Time current
CODE
CURVE
9
135
10
8*
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URC24 Thermal Demand Meter
The Demand Current values are calculated for phase A, B, C, and Ground. The calculated values
are: Instantaneous or Present Demand, High draghand Demand, and Low draghand Demand.
The Instantaneous Demand value is a moving integral and is lost with the loss of control power.
The High draghand Demand and Low draghand Demand values reflect the highest and lowest
Instantaneous Demand values over time. Furthermore, these two values are saved in non-volatile
memory and are cleared by the customer. When they are cleared, they immediately take on the
Present Demand Value and begin to track the Present Demand’s highs and lows after one
Demand Interval.
Upon Urc24 power up or Demand Interval change, there will be a 3-minute delay before any
Present Demand values will be calculated. Also the High draghand Demand and Low draghand
Demand will not be updated during recloser operation.
The Demand Interval is selectable between 5 or 15 minutes. The Demand Interval is accessed by
depressing Function 8 twice.
All Demand values are accessed using the Function 10 button on the Urc24 front panel: to
access all values simply keep depressing the 10 button. The default function is the “Actual
Current” (rms current flowing through recloser CTs) function denoted by “10” on the Urc24
display. Depressing the 10 button again will bring up the Present Demand value denoted by “P”
on the display. Another time will bring up the High draghand Demand value denoted by “H” on
the display. And finally again, will bring up the Low draghand Demand value denoted by “L” on
the display.
To clear the High and Low draghand Demand (to clear is to set the High/Low to the present
demand values) simply depress the enter button twice when the display is showing the value you
want cleared. The security code must be entered before clearing the High and Low draghand
Demand or the values will remain unchanged. This procedure is similar to clearing the operation
counter.
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URC-24 QUICK CHECK REFERENCE CARD
Note to installer: Before removing the "old" recloser control record the settings of the "old" control in the "Setting" column of the table below. After the URC-24 is installed,
transfer the recorded settings to the URC-24
F.C.
1
2
3
4:2
5
DESCRIPTION
Fast Shots
Shots to Lock Out
First Reclose Time
2nd reclose time
Phase Min. Trip
RANGE/INTERVAL
0-4
1-4
2, 3, 5, 10, 15, 30, 45
2, 3, 5, 10, 15, 30, 45
10 to 800 amps
6
7
8
9
10*
11
Fast Curves
Time Delay Curve
Reset Time
Ops. Counter
Actual Current
Gnd. Min. Trip
1-5
1-9
10, 30, 60, 120, 180
n/a
n/a
10 to 400 amps
12
13
14
15
Def. Gnd Lockout Time
Serial Number
Operating Mode
Gnd. Trip Operations
1-15 sec
n/a
n/a
0=all gnd detection off
1=one shot to lockout
S2=same seq. as FC 2
3rd Reclose Time
2, 3, 5, 10, 15, 30, 45
Def. Gnd. Lockout amps
10 to 400 amps
SETTING
INCREMENT
1
1
sec
sec
10 amps (up to 300)
20 amps (300-800)
1
1
sec
switch phase w/ "select" key
switch phase w/ "select" key
5 amps (up to 150)
10 amps (150-400)
1
n/a
n/a
n/a
NOTES
None
None
None
None
None
See manual for curves
See manual for curves
None
Shows ops. on ea. phase
Shows amps on ea. phase
None
Related to F.C. 17
Factory set
none
none
Press
appropriate
key twice to
access F.C.
13-19.
Example: for 4:3
sec
none
FC 13 press
5 amps (up to 150)
Related to F.C. 12
17
"1" twice,
10 amps (150-400)
For FC 14
Fast Curves (Gnd)
1-5
1
See manual for curves
18
press "2"
Time Dly. Curves (Gnd)
1-9
1
See manual for curves
19
twice, ect.
Dmd. Time Interval
0 (off), 5, 15 sec
Sets time interval for the demand meter
d
*The Demand Meter is displayed by pressing "10" multiple times press twice for "present", 3 times for "High", 4 times for "low".
FUNCTION KEYS: The function keys (1-12) are used to access all functions of the URC-24.
Press keys "1" - "12" once to directly access F.C. "1" - "12". Press keys "1"-"10" twice (or more for "d") to access F.C. "13" - "d".
EDITING KEYS: Press "Select" switch between phases (A, B, C, & GND) when observing the operations count, current, or demand.
Press "Ï" and "Ð" to edit the URC-24 functions after the security code has been entered (inactive until security code is entered).
Press "Enter" to accept changes made with the "Ï" and "Ð" keys (inactive until security code is entered).
SECURITY CODE: To enter the security code press the keypad keys in the following order "Enter", "5","2", "7", "Enter".
Copyright 2007 I.C.M.I. (Inductive Components Mfg., Inc.) 1200 Ferris Rd., Amelia, OH 45102
Phone: (513) 752-4731 Fax: (513) 752-4738 Web: www.icmiinc.com
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Revision 3.0, March 07, 2005