Symcom 777-MV-P2 Engineering Specification

ENGINEERING SPECIFICATION

SYMCOM MODEL 777-MV-P2

Electronic Overload Relay

PART 1 GENERAL

1.1 REFERENCES

A. UL 508 Industrial Control Equipment – Underwriters Laboratories
B. IEC 60947 Low Voltage Switchgear and Controlgear – International Electrotechnical Commission
C. CSA C22.2 No. 14 Industrial Control Equipment – Canadian Standards Association
D. ANSI/IEEE C62.41 – American National Standards Institute/Institute of Electrical & Electronics Engineers
E. MODBUS over Serial Line Specification and Implementation Guide V1.02
F. UL 1053 Ground-Fault Sensing and Relaying Equipment – Underwriters Laboratories

1.2 WARRANTY

A. Manufacturer Warranty: The manufacturer shall guarantee the equipment to be free from material and workmanship defects for a

PART 2 PRODUCTS

2.1 MANUFACTURERS

The equipment specified shall be the Model 777-MV-P2, manufactured by SymCom, Inc.

2.2 DESCRIPTION

2.3 PERFORMANCE/DESIGN CRITERIA: 3-PHASE ELECTRONIC OVERLOAD RELAY

period of five years from the date of manufacture when installed and operated according to the manufacturer’s requirements.

A . Regulatory Requirements:

1 . The equipment shall be UL Listed as type NKCR—Industrial Control Equipment-Motor Controllers-Auxiliary Devices.

2. The equipment shall be ULC Listed as type NKCR7—Industrial Control Equipment-Motor Controllers-Auxiliary Devices
Certified for Canada.

3. The equipment shall be CE marked for use in the European Union and evaluated against IEC 6094 7 Low Voltage Switchgear
and Controlgear.

4. The equipment shall be CSA certified as class 3211-03—Industrial Control Equipment-Motor Controllers-Auxiliary Devices.

A . Protective Relay Functions

1. The equipment shall provide protection against the following conditions:
a. Voltage single-phase/phase loss
b. Phase reversal
c. Low voltage
d. High voltage
e. Voltage unbalance
f. Rapid cycling
g. Undercurrent
h. Overcurrent
i. Current unbalance
j. Current single-phase/phase loss
k. Low control voltage
l. Ground fault
m. Contact failure
n. Low power
o. High power

B . Communication Capabilities

1. The equipment shall provide the following communications capabilities when combined with the appropriate SymCom
network communications modules (Visit www.symcom.com for the current list of communication modules):
a. Modbus RTU
b. Modbus TCP
c. DeviceNet
d. Profibus

2. The equipment interface shall have the capability of connecting to the following systems:
a. HMI (Human-Machine Interface)
b. SCADA (Supervisory Control and Data Acquisition)

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c. DCS (Distributed Control System)
d. PLC (Programmable Logic Controllers)
e. SymCom Model RM-1000 Modbus remote display
f. SymCom Model RM-2000 Modbus remote display

3. The equipment shall support the following communication parameters:
a. 9600 baud, Even parity, and 1 stop bit
b. 9600 baud, Odd parity, and 1 stop bit
c. 9600 baud, No parity, and 1 stop bit
d. 19200 baud, Even parity, and 1 stop bit
e. 19200 baud, Odd parity, and 1 stop bit
f . 19200 baud, No parity, and 1 stop bit

4. The equipment shall provide setpoints that are readable and writable via the Modbus RTU, Modbus TCP and DeviceNet
interfaces.

5. The equipment shall provide the ability to energize and de-energize the relay via the Modbus RTU, Modbus TCP, Profibus
and DeviceNet

6. The equipment shall provide a Modbus network watchdog with a 10-second trip delay to trip the relay when Modbus
communication is lost.

7 . The equipment shall provide two programmable Modbus assemblies for reading large blocks of data.

8. The equipment shall provide configurable bus pre-bias/pre-polarization and post-bias/post –polarization on either side of
the RS-485 transmission eliminating the need for a biasing terminator.

9 . The equipment shall provide an 8 bit Modbus memory map.

10. The equipment shall provide a 16 bit Modbus memory map.

C . Network Capabilities

1. The equipment shall provide registers to read the following real-time values:
a. L1-L2 line voltage
b. L2-L3 line voltage
c. L3-L1 line voltage
d. Average line voltage
e. Phase A current
f. Phase B current
g. Phase C current
h. Average phase current
i. Voltage unbalance
j. Current unbalance
k. Current scale factor
l. Power factor
m. Ground fault current
n. Restart Delay 1 (RD1) time remaining
o. Restart Delay 2 (RD2) time remaining
p. Restart Delay 3 (RD3) time remaining
q. Power in KW
r. Trip status of the following:

1) Manual reset status

2) Network off command status

3) Contact failure

4) Undercurrent

5) Overcurrent

6) Ground fault

7) Current unbalance

8) Current single-phase

9) Low control voltage

10) Low power

11) High power

s. Status of the following:

1) Low voltage pending

2) High voltage pending

3) Voltage unbalance pending

4) Undercurrent pending

5) Reverse-phase pending

6) Current unbalance pending

7) Voltage single-phase pending

8) Current single-phase pending

9) Overcurrent pending

10) Ground fault pending

11) Low control voltage pending

12)

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interfaces

ABC/CBA phase rotation

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13) Global warning

14) Relay status

15) Low power pending

16) High power pending
t. Last fault 1
u. Last fault 2
v. Last fault 3
w. Last fault 4
x. Last fault 5
y. Last fault 6
z. Last fault 7
aa. Last fault 8
bb. Last fault 9
cc. Last fault 10 (oldest fault)
dd. Unit ID
ee. Model code
ff. Software revision
gg. Thermal capacity remaining
hh. Start count
ii. Start duration 1
jj. Start duration 2
kk. Start duration 3
ll. Start duration 4
mm. Warning status of the following:

1) Low voltage warning

2) High voltage warning

3) Voltage unbalance warning

4) Overcurrent warning

5) Undercurrent warning

6) Current unbalance warning

7) Ground fault warning

8) Low frequency warning

9) High frequency warning

10) High power warning

11) Low power warning
nn. Line frequency
o o. OC Time to trip

2. The equipment shall provide the following readable/writable setpoints:
a. Low voltage trip point
b. High voltage trip point
c. Voltage unbalance trip point
d. Current multiplier, used to scale the current reading properly when Current Transformers (CTs) are used.
e. Current divisor, used to scale the current reading properly when amp turns are used.
f. Overcurrent trip point
g. Undercurrent trip point
h. Current unbalance trip point
i. Trip class setpoint
j. Restart Delay 1 setpoint
k. Restart Delay 2 setpoint
l. Restart Delay 3 setpoint
m. Number of restarts after an undercurrent fault (#RU) setpoint
n. Number of restarts after a fault other than undercurrent (#RF) setpoint
o. Undercurrent trip delay setpoint
p. Ground fault trip point
q. Modbus address setpoint
r. Network status setpoint to enable the following features:

1) Network watchdog

2) Network program disable

3) Front panel lock

s. Communication parameters setpoint to set the following:

1) 9600 baud, Even parity, and 1 stop bit

2) 9600 baud, Odd parity, and 1 stop bit

3) 9600 baud, No parity, and 1 stop bit

4) 19200 baud, Even parity, and 1 stop bit

5) 19200 baud, Odd parity, and 1 stop bit

6) 19200 baud, No parity, and 1 stop bit

7) Enable/disable front porch

8) Enable/disable back porch

t. Trip enable setpoint to enable the following:

1) Ground fault trip

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