INSTALLATION
INSTRUCTIONS
Revision A1
Rapid City, SD, USA, 04/2009
MODEL 777-P1, 777-575-P1, 777-HVR-P1
ELECTRONIC OVERLOAD RELAY
2880 North Plaza Drive, Rapid City, South Dakota 57702
(800) 843-8848 · (605) 348-5580 · fax (605) 348-5685
BE SURE POWER IS DISCONNECTED PRIOR TO INSTALLATION!
FOLLOW NATIONAL, STATE AND LOCAL CODES.
READ THESE INSTRUCTIONS ENTIRELY BEFORE INSTALLATION.
The Model 777-P1 is a solid-state (electronic) overload relay. It is fully programmable for customized protection and is designed to protect 3-phase systems with operating voltages of 190-480VAC (500-600VAC for the Model 777-575-P1). The output relay is a Form C contact, which can control a contactor or other device. The unit can be programmed prior to installation by applying 120VAC to terminals L1 and L2 (except Model 777-575-P1). For testing purposes, 3-phase power must be applied with a minimum voltage of 200VAC
(450VAC for the Model 777-575-P1). The 777-P1 offers more advanced network programmable features and will work with SymCom’s CIO-120-DN, CIO-DN, CIO-MB,
CIO-777-PR, CIO-EN, and Modbus RS485MS-2W Communications Modules (sold separately).
CONNECTIONS
1. Disconnect power and verify power is off.
2. Using the four corner tabs or the DIN rail mount, install the 777-P1 directly above or below the contactor. To use the DIN rail mount, hook the top clip first then apply downward pressure until the lower clip snaps onto the rail.
3. Insert the motor conductors through the holes marked A, B, and C. Make certain the conductor through each hole corresponds to the right motor conductor, i.e. the A phase conductor should go through the round hole marked A. See Figure
1, 2, and 3 for typical wiring diagrams. See Table 1 for the correct number of conductors with/without external CTs for the size of motor used.
NOTE: Pay close attention to these diagrams to eliminate any power factor errors, when communicating with the device.
4. Connect the 3-phase power from the line side of the contactor to L1, L2, and L3 terminals using 12-18 AWG copper wire. These should be tightened to no more than 7 inch lbs.
5. Connect the control circuit wires to the appropriate terminals. The relay is designed for fail-safe operation, thus the NO (normally open) contact should be in series with the coil on the contactor for motor control (see Figure 1). For alarm circuits, the NC (normally closed) contact is in series with the alarm circuitry.
© 2009 SymCom, Inc. All Rights Reserved 2
Recommended
Full Load
Amps
OC Range
(Amps)
UC Range
(Amps)
# of Passes through each Window
2.5-3 2.2-11.1 1.1-10.8
10
9
3-3.5 2.5-12.5 1.2-12.2 8
7
5-6 4-20.1 2-19.6
6
5
6-8 5-25.1 4
3
2
1
80-110
110-160
160-220
220-320
320-420
400-520
480-600
540-700
560-800
80-140
120-210
160-280
240-420
320-560
400-700
480-840
560-980
640-992/FFF
0, 40-140
0, 60-210
0, 80-280
0, 120-420
0, 160-560
0, 200-700
0, 240-840
0, 280-980
0, 320-992/FFF
5
5
5
5
5
5
5
5
5
MULT (CT
Ratio)
100 (100:5)
150 (150:5)
200 (200:5)
300 (300:5)
400 (400:5)
500 (500:5)
600 (600:5)
700 (700:5)
800 (800:5)
10
9
8
7
6
5
4
3
2
1
TABLE 1: Wiring Configuration Based on Motor Load Amps
FIGURE 1: Typical Wiring Diagram for FLA of 25-90
© 2009 SymCom, Inc. All Rights Reserved 3
FIGURE 2: Typical Wiring Diagram Using External CTs.
FIGURE 3: Looping Example Showing Three Conductors
(MULT=3 from Table 1)
(No other necessary connections are shown.)
© 2009 SymCom, Inc. All Rights Reserved 4
PROGRAMMABLE PARAMETERS
The following settings MUST be programmed by the user in order to provide proper protection for the application. The programmable range for each parameter can be found in the electrical specifications table on pages 16 and 17. See pages 10 and 11 for programming examples.
LV/HV - The recommended settings for LV (low voltage) and HV (high voltage) according to the NEMA MG1 standard are ±10% of the motors nameplate voltage. Generally, the motor manufacturer should be contacted. High and low voltage trips are base on average voltage measured.
Example: Nameplate voltage = 230 V
LV = 90% x 230=207 V
HV = 110% x 230 = 253 V
VUB - VUB (voltage unbalance) The NEMA MG1 standard says a motor should not be operated above a 1% voltage unbalance without derating the motor. Most utility supplied power sources have a difficult time sustaining a 1% VUB. The motor manufacturer should be consulted for an exact VUB setting. Setting VUB to 999 will disable voltage unbalance protection, but will not disable voltage single-phase protection.
Voltage unbalance is calculated as follows:
%Voltage Unbalance = [(Maximum deviation from the average)/Average] x 100%
Example: Measured line-line voltages = 203, 210, and 212. The average =
(203+210+212)/3 = 208.3. The maximum deviation from the average is the greatest difference between the average voltage (208.3) and any one voltage reading; 212-208.3 = 3.7, 210-208.3 = 1.7 and 208.3-203 = 5.3. The maximum deviation from the average is 5.3, thus voltage unbalance = 5.3/208.3 x 100=
2.5%.
MULT - MULT (multiplier) setting is found on Table 1. The MULT setting is determined by the current the unit will be monitoring. Set MULT first then set UC, OC and GF.
OC- OC (overcurrent) is typically set to the service factor amperage (SFA) of the motor or 100-115% of motor full-load amps (FLA), which are determined by the motor manufacturer. If any one leg exceeds the OC setting, the 777-P1 will follow the TC settings to determine when to trip; in seconds or by following the trip class curve
(see Figure 4).
UC - UC (undercurrent) is typically set to 80% of the full-load amperage (FLA) of the motor. This is usually adequate for protection of loss of load for many pumps and motors, including submersibles. If the motor is not pulling near full load amperage then the UC may have to be set to something higher than 80% of FLA for adequate protection. UC can be set to 0 if UC protection is not desired. The 777-
P1 examines average current to determine if an undercurrent trip condition exists.
CUB - SymCom recommends contacting the motor manufacturer for a specific setting.
Current unbalance is calculated the same way voltage unbalance is calculated
(see formula above). Setting CUB to 999 will disable current unbalance and current single-phase protection.
© 2009 SymCom, Inc. All Rights Reserved 5
TC - The TC (trip class) setting determines how quickly the 777-P1 will trip when an overload (overcurrent) condition is detected. TC is a dual-function setting—both a thermal trip class (NEMA standard) and a linear trip delay (in seconds) can be set.
While the standard trip classes are 5, 10, 15, 20, and 30, TC can be set from 2–60.
These additional “non-standard” trip classes allow the unit to follow a trip curve inbetween the “standard” trip class curves shown in Figure 4.
Trip classes 2–30 can be set from approximately the 7 o’clock to 2 o’clock position on the DISPLAY/PROGRAM dial. The linear overcurrent trip delay can be set after the 2 o’clock position from 0–60 seconds (L00–L60) or to “oFF.” If TC is set to L00, the 777-P1 will trip off within 1 second when an overcurrent condition is detected.
If both trip class and linear trip delay settings are programmed, the 777-P1 will follow the faster trip time. E.g., TC is set to 15 and L20, and the amperage is 200% of the OC setting. According to the trip class 15 curve, the 777-P1 will trip off in approximately 100 seconds. Thus the 777-P1 will follow the linear trip delay setting, because it is faster, and will trip off in 20 seconds.
The motor manufacturer should be contacted for an exact TC setting. Table 3 describes the trip classes, and Figure 4 shows the trip class curves.
RD1 - RD1 (restart delay one) is the rapid-cycle timer in seconds. This timer is initiated when power is first applied to the unit. If no voltage fault conditions exists, the output relay will energize (the NO will close and the NC will open) as soon as RD1 timer expires. Typically, this is set to 20-30 seconds. This will provide adequate protection for successive power outages or short cycling caused by other motor controls. This timer is also initiated when motor current goes to zero. If the user does not want rapid-cycle protection, then RD1 should be set to zero. This will also ensure that when an alarm circuit is used, an alarm will sound only when there is a fault or power to the unit is lost.
RD2 - RD2 (restart delay two) is a restart timer, in minutes (standard), used to restart the motor after a trip due to a current unbalance, current single-phasing, or an overload condition. This timer is known as a motor cool-down timer. A setting of 5-
10 minutes will give most motors adequate time to cool down after an overload condition. The motor manufacturer should be contacted for an exact value.
RD3- (restart delay three) is the restart timer, in minutes (standard), used after an undercurrent trip. It is also known as a dry-well recovery timer in pumping applications. This is the time it takes a well to recharge after pumping dry. This setting varies widely by application and there is no typical setting. RD3 can be set from 2-500 minutes or to A to enable the automatic Dry-Well Recovery Calculator.
The Automatic Dry-Well Recovery Calculator allows the 777-P1 to automatically select a restart delay based on the run time of the last run cycle. Table 2 shows the next restart delay vs. run time. In general, a longer run time produces a shorter restart delay. This feature allows the 777-P1 to optimize running and rest times automatically.
© 2009 SymCom, Inc. All Rights Reserved 6
Run Time
> 1Hr
30 min.- 59.99 min.
15 min.- 29.99 min.
Next Restart
Delay (minutes)
6
15
30
Starts/Hr
10
4
2
< 15 min. 60 1
TABLE 2: Automatic Dry-Well Recovery Timer
#RU/ADDR - The #RU/ADDR is a dual-function setting. #RU is displayed when the
DISPLAY/PROGRAM knob is between the 7 o’clock and 11 o’clock position of the dial. ADDR is displayed above the 11 o’clock position on the DISPLAY/PROGRAM dial.
#RU is the number of restarts the 777-P1 will attempt after an undercurrent fault before the unit locks out and requires a manual reset. #RU can be set to 0, 1, 2, 3,
4, or A. This counter is cleared one minute after restarting if the 777-P1 does not trip again on undercurrent.
If #RU is set to “0,” the 777-P1 will require manual resetting after all undercurrent faults.
If #RU is set to “A,” the 777-P1 will always automatically restart after undercurrent faults.
ADDR is the RS-485 address of the 777-P1 and is only used when communicating with any external communication device. The address can be A01–A99.
#RF - #RF is the number of restarts the 777-P1 will attempt after current unbalance or current single-phase faults. This counter will be cleared one minute after start-up if the unit does not trip again on a current unbalance, or current single-phase condition. Available settings are 0, 1, 2, 3, 4 and A, or to include overcurrent faults,
#RF can be set to oc1, oc2, oc3, oc4 or ocA.
If #RF is set to “0,” the 777-P1 will require manual resetting after all current unbalance, single-phase and overcurrent faults.
If #RF is set to “A,” the 777-P1 will always restart automatically after current unbalance and single-phase faults.
If #RF is set to “ocA,” the 777-P1 will always restart automatically after current unbalance, single-phase and overcurrent faults.
UCTD - UCTD (undercurrent trip delay) is the length of time, in seconds (standard), the unit will allow the motor to run in an undercurrent situation before de-energizing its relay. Typically, UCTD is set to 2-4 seconds.
GF - GF (ground fault) is the maximum allowable current that can flow to ground before the 777-P1 de-energizes its relay. This is a residual, class II ground fault system and should not be used for personnel safety. A typical setting for GF is 10-20% of motor FLA (in amps). The GF test procedure in this installation instruction manual must be conducted before the device is brought online.
© 2009 SymCom, Inc. All Rights Reserved 7
PROGRAMMING
1. Rotate the MODE SELECT switch to the parameter to be programmed.
2. Press and hold the RESET/PROGRAM button.
3. Rotate the DISPLAY/PROGRAM knob until the proper setting for the parameter is displayed.
4. Release the RESET/PROGRAM button. This stores the new parameter in the nonvolatile memory. If the number changes back to what is was before programming, then the tamper guard is on and will need to be turned off before programming can be completed (see the TAMPER GUARD section for a complete description).
5. Continue steps 1-4 until all parameters are programmed.
OPERATION
The relay operation of the Model 777-P1 is designed to be fail safe. This means when everything is within the limits programmed into the unit, the relay will energize, the NO contact will close and the NC contact will open. Once the unit has been wired and programmed, the unit is ready to operate. Turn MODE SELECT to the RUN position. The display will show “run” alternating with some number (the numbers displayed will be the number corresponding to where the DISPLAY/PROGRAM knob is pointed). It will do this for the amount of time programmed into RD1. After this time has expired, the relay will energize (NO contact will close and the NC contact will open). If something else is in the display, see the troubleshooting section for more information. If MODE SELECT is taken out of the RUN position, the unit’s relay will de-energize.
CLEARING LAST FAULT
The last fault stored can be cleared on the MotorSaver
®
following these steps:
1. Rotate the MODE SELECT switch to GF.
2. Press and hold the RESET/PROGRAM button. Adjust the DISPLAY/PROGRAM adjustment until “cLr” appears on the display. Release the RESET/PROGRAM button.
TAMPER GUARD
The MotorSaver’s setpoints can be locked to protect against unauthorized program changes.
1. Rotate the MODE SELECT switch to GF.
2. Press and hold the RESET button. Adjust the DISPLAY/PROGRAM knob until “Loc” appears on the display.
3. Release the RESET button.
4. Turn MODE SELECT switch to RUN.
The program is now locked, but all settings can be viewed. The unit can be unlocked by following the same steps except adjust the DISPLAY/PROGRAM knob to “unL” in step 2.
© 2009 SymCom, Inc. All Rights Reserved 8
Trip Class
5
Application Description
Small fractional horsepower motors where acceleration times are almost instantaneous or where extremely quick trip times are required
10
15
20
(
Fast Trip) Hermetic refrigerant motors, compressors, submersible pumps and general-purpose motors that reach rated speed in less than 4 seconds.
Specialized applications.
(Standard Trip) Most NEMA-rated general-purpose motors will be protected by this setting.
30 (Slow Trip) Motors with long acceleration times (>10 seconds) or high inertia loads.
LXX This is linear overcurrent setting, where XX is the number of seconds for a linear trip.
Other Trip
Classes
Trip Time in seconds at 6x OC=(TC x .93359s)
TABLE 3: Trip Class Descriptions
10000
1000
100
10
1
0 100 200 300 400 500
% of OC Setting
600 700
FIGURE 4: Overload Trip Curves
800 900
Class 30
Class 20
Class 15
Class 10
Class 5
1000
© 2009 SymCom, Inc. All Rights Reserved 9
PROGRAMMING EXAMPLES
Example #1
Motor to be protected: 3-phase, 460 Volt, 25 hp air compressor with full load amperage rating of 34A and maximum service factor amps of 37.4. Use the following calculations and reasoning to determine the appropriate settings for this application.
LV-
HV-
VUB-
MULT-
OC-
UC-
CUB-
TC-
460 x 0.90 = 414
460 x 1.10 = 506
Standard NEMA motor = 3
From Table 1, MULT = 1
Service Factor Amperage = 37.4
FLA x 0.80 = 34A x 0.80 = 27.2
RD1-
RD2-
Standard NEMA motor = 5
General purpose motor, TC = 20. No linear trip delay is desired, TC also = oFF.
Since this compressor takes about 10 seconds to bleed off excess pressure after a shutdown, setting RD1 = 20 will allow the compressor to unload before being restarted.
Because the motor may be hot from running in an unbalance or single-phase condition, a motor cool-down time of 10 minutes should be appropriate, RD2 =
10.
RD3/#RU- Because an undercurrent would signal a serious problem in this application (a broken shaft or belt), #RU should be set to 0 for a manual reset. RD3 is not applicable in this example.
#RF- Because an overload (overcurrent) fault signals a serious problem in this application (e.g., worn bearings), "oc" should not be included in the #RF setting so that a manual reset after an overload fault is required. A #RF=1 will give the system 1 chance to recover from an unbalance or single-phasing problem before manual reset is required.
UCTD- Setting UCTD = 5 will allow normal operation and not allow the motor to run
GF- too long in a failure mode.
A ground fault setting of 15% of full load amps will be a significant indicator
Example #2
that the motor should be evaluated for repair or replacement. Therefore, GF =
34A x 0.15 = 5.1.
Motor to be protected: 3-phase, 230 Volt, 5 hp submersible pump with full load amperage of 15.9A and maximum service factor amps of 18.2. Use the following calculations and reasoning to determine the appropriate settings for this application.
LV-
HV-
VUB-
MULT-
230 x 0.90 = 207
230 x 1.10 = 253
Manufacturer suggests 3
From Table 1, MULT = 2
OC-
UC-
CUB-
TC-
RD1-
Service Factor Amperage = 18.2
FLA x 0.80 = 15.9 x 0.80 = 12.7
Manufacturer suggests 5
From Table 3, for this (and most) submersible pumps, TC = 10. No linear trip delay is required so TC also is set to oFF.
To protect the pump from rapid cycling, RD1 = 30
© 2009 SymCom, Inc. All Rights Reserved 10
RD2-
RD3-
#RU-
#RF-
Since the motor is small and submerged in water, the motor will generally cool down quickly. RD2=5
The well history shows that it will fully recover in 2 hours. RD3 = 120
In this application, we know that the well will eventually recharge itself, #RU =
A (Automatic).
This well is known for sand to jam the impeller; therefore, “oc” should be included so that the pump will attempt to automatically restart after an
UCTD-
GF- overload condition. History shows that 2 or 3 starts and stops usually clears the sand from the impeller. #RF= oc2 or oc3.
This well may become air locked on startup, but will usually re-prime itself in 5 seconds or less. UCTD = 10
Because this type of fault indicates the impending failure of the motor and it may take several days to get a new pump and schedule a well driller to remove and replace the pump, GF setting of 10% of full load amperage will give the well owner enough time to prepare for pump replacement. GF =
15.9A x 0.10 = 1.59
SYSTEM DISPLAY
The output display can show one of the following parameters when the MODE SELECT switch is in the RUN position: each line current, or each individual line-line voltage, measured percent of voltage unbalance and current unbalance, and measured ground fault current. The display is also used for programming the operating parameters and identifies the cause of the fault. The last fault (not the current fault) can be displayed by pressing and holding the RESET/PROGRAM button while the MODE SELECT switch is in the RUN position. Table 4 lists the fault codes the unit could display.
Displayed
Message
Meaning
SP ub
Tripped on current single-phasing or unit won’t start because the voltage is singlephased
Tripped on current unbalance or unit won’t start because the voltage is unbalanced
CF
GrF
HI
Lo rP oFF clr
FFF
Tripped on contactor failure (due to faulty contacts or connections on the load side)
Tripped on ground fault
A high voltage condition exists (won’t allow motor to start)
A low voltage condition exists (won’t allow motor to start)
Incoming phases have been reversed, the motor may run backwards if started
A stop command was issued from a remote source
No previous faults
Displayed value is greater than 999 (can be due to incorrect MULT setting)
TABLE 4: Fault Codes and Their Meaning
On power up, the 777-P1 will show the current software revision. For example if the software revision is 3204, the 777-P1 will show 032 followed by 004.
© 2009 SymCom, Inc. All Rights Reserved 11
COMMUNICATIONS PORT/REMOTE RESET
The unit comes with a 9-pin sub-D connector for remote communications and/or for using a remotely located reset button. If communication is desired, a communication module needs to be plugged into this 9-pin connector. This module provides isolation, signal conditioning for compatibility with Modbus RTU and RS-485 networks, and provides terminals for terminating the shielded communications cable. Up to 99 units can be installed on one RS-485 network.
Further information can be obtained at www.symcom.com. A remote reset button can be connected directly to the 9-pin connector using a male sub-D connector. It should be wired as shown in Figure 5.
FIGURE 5: Remote Reset Button Wiring Diagram
© 2009 SymCom, Inc. All Rights Reserved 12
TROUBLESHOOTING
The MotorSaver
®
will display a fault code alternating with a number or with “run” when it is in a trip condition. If the unit is showing a fault code (see Table 4) alternating with “run,” it has tripped on a current (amperage) condition. If the fault code is alternating with some number (voltage reading or zero), the unit will not allow the motor to start because there is a problem with the incoming voltage. If the display is showing just a fault code it requires a manual reset. If the display reads “oFF,” a stop command was issued through the communications network.
PROBLEM SOLUTION
The unit will not start. Display alternates “rP” with the
DISPLAY/PROGRAM parameter value.
The unit will not start. Display alternates “SP”, “ub”, “HI”, or
“Lo” with the DISPLAY/
PROGRAM parameter value.
The voltage inputs are reverse phased. If this is the initial start-up, swap any two of the leads connected to
L1, L2, or L3 on the 777-P1 to correct the problem. If the overload relay has been previously running, the power system has been reverse phased. Check the phase sequence of the incoming power lines. Note: L1 must be tapped from conductor Phase A, L2 from B, and L3 from C for correct power factor measurements on remote communications.
The incoming voltage is not within the limits programmed in the VUB, HV, and LV settings. Adjust the DISPLAY / PROGRAM switch to read the incoming line voltage values. Correct the incoming power problem and check programmed limits to verify they are correct.
Display alternates “SP”, “ub”, or
“oc” with “run.”
The overload relay has tripped on the fault shown on the display and is timing down RD2 before restarting.
Display alternates “uc” with
“run.”
Display is showing a solid “SP”,
“ub”, or “oc.”
The overload relay has tripped on undercurrent and is timing down RD3 before restarting. If undercurrent is not a normal condition for this installation, check for broken shafts, broken belts, etc.
The unit has tripped on the fault shown and a manual reset is required because of the programmed setting in
#RF. Check the system for problems that would produce the single-phase, overload or current unbalance fault, such as a jam.
Display is showing a solid “uc.”
The unit has tripped on undercurrent and a manual reset is required because of the setting in #RU. Check the system for problems that would produce a loss of load such as a broken belt or a lack of liquid to pump.
Display is showing a solid “CF.”
Display is showing a solid
“GrF.”
The unit has tripped on current single-phasing, but was not single-phased by the incoming voltage. Check for damaged contacts or loose or corroded connections.
A ground fault current greater than the programmed GF value has been detected. A manual reset is required.
Check the motor for insulation breakdown.
TABLE 5: Troubleshooting Chart
© 2009 SymCom, Inc. All Rights Reserved 13
GROUND FAULT TESTING PROCEDURE
A ground fault test must be performed before installing the MotorSaver® as
required by UL1053 and NEC, ANSI/NFPA 70.
1. Disconnect power.
2. Hook up the three line voltages to L1, L2, and L3 as required by the installation instructions.
3. Program the desired parameters into the unit. For test purposes, set MULT to 1 and GF to the minimum allowed setting.
4. Construct the circuit, using an AC power supply. This circuit simulates a ground fault condition by generating a current in one of the phases. Alternate test circuits may be used. The only requirement is the current through the current transformer must be between 115% and 150% of the GF setting and pass through only one CT window.
5. The values of V and R will be determined by the current required to generate a GF trip condition: I = Vrms/R, where I = 115% of GF setting.
6. Place the unit in the RUN position, apply 3-phase power and allow the NO contact to close.
7. Energize the test circuit by pushing and holding the test pushbutton until the unit trips
(within 8.5 seconds). The display should show “GrF” and the NO contacts should be open. Release the NO pushbutton.
8. The results of the test are to be recorded on the test form provided below. The form should be kept by those in charge of the building’s electrical installation in order to be available to the authority having jurisdiction.
9. Confirm programmed parameters and proceed with installation instructions.
© 2009 SymCom, Inc. All Rights Reserved 14
---------------------------------------------------
GROUND FAULT TEST RESULTS*
Date Performed by Results Location
*A copy of this form should be retained by the building’s electrical foreman.
-----------------------------------------------------
© 2009 SymCom, Inc. All Rights Reserved 15
MODEL 777-P1 SPECIFICATIONS
Electrical
3-Phase Input Voltage
Frequency
Motor Full Load Amp Range
200–480VAC (Model 777-P1)
500–600VAC (Model 777-575-P1*)
380–480VAC (Model 777-HVR-P1**)
50–60Hz
2–25A, 3-phase (looped conductors required)
25–90A, 3-phase (direct)
80–800A, 3-phase (external CTs required)
Maximum Input Power
Output Contact Rating SPDT (Form C)
10 W
Pilot duty rating: 480VA @ 240VAC
General purpose: 10A @ 240VAC
(470VA @ 600VAC Pilot duty for 777-HVR-P1**)
Expected Life
Mechanical
Electrical
1 x 10
6
operations
1 x 10
5
operations at rated load
Accuracy at 25°C (77°F)
Voltage
Current
GF Current
±1%
±3%(<100A Direct)
±15%
5% ±1 second Timing
Repeatability
Voltage
Current
±0.5% of nominal voltage
±1% (<100A direct)
Trip Times (Those not shown have user selectable trip times.)
Ground Fault Trip Time
101%-200% of Setpoint
201%-300% of Setpoint
301%-400% of Setpoint
401% or Greater
Trip time
8 seconds ±1 second
4 seconds ±1 second
3 seconds ±1 second
2 seconds ±1 second
Current Unbalance Trip Times
% Over Setpoint
1%
2%
3%
4%
5%
6%
10%
15%
Trip time
30 seconds
15 seconds
10 seconds
7.5 seconds
6 seconds
5 seconds
3 seconds
2 seconds
Safety Marks
UL UL508, UL1053 (File #E68520)
CE IEC 60947-1, IEC 60947-5-1
CSA 46510
Standards Passed
Electrostatic Discharge (ESD)
Radio Frequency Immunity (RFI), Conducted
Radio Frequency Immunity (RFI), Radiated
IEC 61000-4-2, Level 3, 6kV contact, 8kV air
IEC 61000-4-6, Level 3 10V
IEC 61000-4-3, Level 3 10V/m
Fast Transient Burst
Surge
IEC 61000-4-4, Level 3, 3.5 kV input power
IEC
61000-4-5 Level 3, 2kV line-to-line; Level 4, 4kV line-to-ground
© 2009 SymCom, Inc. All Rights Reserved 16
ANSI/IEEE
Hi-potential Test
Vibration
Shock
Mechanical
Dimensions
Terminal Torque
Enclosure Material
Weight
Max. Conductor Size Through 777-P1
Environmental
Temperature Range
Pollution Degree
Class of Protection
Relative Humidity
Programmable Operating Points
LV- Low Voltage Threshold
HV- High Voltage Threshold
VUB- Voltage Unbalance Threshold
MULT- # of Conductors or CT Ratio (XXX:5)
OC- Overcurrent Threshold
C62.41 Surge and Ring Wave Compliance to a level of 6kV line-to-line
Meets UL508 (2 x rated V +1000V for 1 minute)
IEC 68-2-6, 10-55Hz, 1mm peak-to-peak, 2 hours, 3 axis
IEC 68-2-27, 30g, 3 axis, 11ms duration, half-sine pulse
3.0"H x 5.1"D x 3.85"W
7 in.-lbs.
Polycarbonate
1.2 lbs
0.65" with insulation
Ambient Operating: -20° to 70°C (-4° to 158°F)
Ambient Storage: -40° to 80°C (-40° to 176°F)
3
IP20, NEMA 1 (Finger-Safe)
10–95%, non-condensing per IEC 68-2-3
Range
170–524V (450–649V*) (340–523V**)
172–528V (451–660V*) (341–528V**)
2–25% or 999 (disabled)
1–10, 100, 150, 200, 300, 400, 500, 600, 700, 800
(20–100A) ÷ MULT or 80–140% of CT Primary
UC- Undercurrent Threshold
CUB- Current Unbalance Threshold
TC- Overcurrent Trip Class and
Linear Overcurrent Trip Delay
RD1- Rapid Cycle Timer
RD2- Restart Delay After All Faults Except
Undercurrent (motor cool-down timer)
RD3- Restart Delay After Undercurrent (drywell recovery timer)
(0, 10–98A) ÷ MULT or 40–140% of CT Primary
2–50% or 999 (disabled)
02–60
L00–L60 or oFF
0–500 seconds (standard)
2–500 minutes (standard)
2-500 minutes (standard), A (automatic)
#RU- Number of Restarts After Undercurrent 0, 1, 2, 3, 4, A (automatic)
ADDR- RS485 Address
#RF-Number of Restarts After All Faults
Except Undercurrent
UCTD- Undercurrent Trip Delay
GF- Ground Fault Current Threshold
A01–A99
*** 0, 1, oc1, 2, oc2, 3, oc3, 4, oc4, A, ocA
(automatic)
2–255 seconds (standard)
(1–20A) or oFF
NOTES: SymCom's Overload Relay can be programmed prior to installation by applying 120VAC between the L1 and L2 terminals (except 575 volt model).
* 575 volt model.
** HVR model
*** If "oc" is displayed in the #RF setting, the 777-P1 will automatically restart (after RD2 expires) following an overcurrent fault in addition to single-phasing and current unbalance faults. Otherwise, a manual reset is required after an overcurrent fault.
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NOTES
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NOTES
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