GE Feeder Management Relay 750 User Manual

5-110 750/760 Feeder Management Relay GE Multilin
5.8 S7 CONTROL 5 SETPOINTS
5
The DEAD BUS MAX VOLTAGE and DEAD LINE MIN VOLTAGE setpoints establish the level of decayed voltage above which
transfers are inhibited. A normal setting for this element is about 0.25 of pickup of nominal voltage. Because the 750/
760 measures a single phase-phase voltage, these values should be multiplied by 1/ to cover the case of a phase-
ground fault on a measured phase reducing that phase voltage but leaving the other two phases at a higher voltage. If
experience shows this setpoint causes a delay of transfer presenting problems, it is occasionally raised to a maximum
of 0.40 of pickup. The user establishes all other setpoints for this element.
The Logic Inputs for Incomers 1 and 2 and the Bus Tie relays are programmed as follows. Note that the input number
matches the wiring shown on the DC schematics. It is not necessary that the specific inputs are programmed as shown, but
field connections must match the logic functions.
If logic inputs identified as optional on the schematics and the following table are not required, they can be pro-
grammed to perform other functions. The Message Mode may be programmed to Disabled or Self Reset.
Table 5–17: LOGIC INPUTS FOR INCOMER 1, 2, AND BUS TIE RELAYS
INPUT INCOMER #1 INCOMER #2 BUS TIE
1Name: Local Mode
Asserted Logic: Contact Open
Contact Close
Open | Von
Open | Voff
Closed | Von
Closed | Voff
Name: Local Mode
Asserted Logic: Contact Open
Contact Close
Open | Von
Open | Voff
Closed | Von
Closed | Voff
Name: Local Mode
Asserted Logic: Contact Open
Contact Close
Open | Von
Open | Voff
Closed | Von
Closed | Voff
2Name: Remote Close
Asserted Logic: Contact Open
Contact Close
Open | Von
Open | Voff
Closed | Von
Closed | Voff
Name: Remote Close
Asserted Logic: Contact Open
Contact Close
Open | Von
Open | Voff
Closed | Von
Closed | Voff
Name: Remote Close
Asserted Logic: Contact Open
Contact Close
Open | Von
Open | Voff
Closed | Von
Closed | Voff
3Name: Remote Open
Asserted Logic: Contact Open
Contact Close
Open | Von
Open | Voff
Closed | Von
Closed | Voff
Name: Remote Open
Asserted Logic: Contact Open
Contact Close
Open | Von
Open | Voff
Closed | Von
Closed | Voff
Name: Remote Open
Asserted Logic: Contact Open
Contact Close
Open | Von
Open | Voff
Closed | Von
Closed | Voff
4Name: 52a or 52b Contact
Asserted Logic: Contact Close
Name: 52a or 52b Contact
Asserted Logic: Contact Close
Name: 52a or 52b Contact
Asserted Logic: Contact Close
5Name: Breaker Connected
Asserted Logic: Contact Close
Name: Breaker Connected
Asserted Logic: Contact Close
Name: Breaker Connected
Asserted Logic: Contact Close
6Name: Selected To Trip
Asserted Logic: Contact Open
Contact Close
Name: Selected To Trip
Asserted Logic: Contact Open
Contact Close
Name: Selected To Trip
Asserted Logic: Contact Open
Contact Close
7Name:Undervoltage On Other
Source
Asserted Logic: Contact Close
Name: Undervoltage On Other
Source
Asserted Logic: Contact Close
Name: Close From Incomer 1
Asserted Logic: Contact Close
8Name: Incomer 2 Breaker Closed
Asserted Logic: Contact Close
Name: Incomer 1 Breaker Closed
Asserted Logic: Contact Close
Name: Incomer 1 Breaker Closed
Asserted Logic: Contact Close
9Name: Tie Breaker Connected
Asserted Logic: Contact Close
Name: Tie Breaker Connected
Asserted Logic: Contact Close
Name: Close From Incomer 2
Asserted Logic: Contact Close
10 Name: Tie Breaker Closed
Asserted Logic: Contact Close
Name: Tie Breaker Closed
Asserted Logic: Contact Close
Name: Incomer 2 Breaker Closed
Asserted Logic: Contact Close
11
(optional)
Name: Block Transfer
Asserted Logic: Contact Open
Contact Close
Name: Block Transfer
Asserted Logic: Contact Open
Contact Close
Name: Block Transfer
Asserted Logic: Contact Open
Contact Close
12
(optional)
Name: Transformer Lockout
Asserted Logic: Contact Open
Contact Close
Name: Transformer Lockout
Asserted Logic: Contact Open
Contact Close
13
(optional)
Name: Source Trip
Asserted Logic: Contact Open
Contact Close
Name: Source Trip
Asserted Logic: Contact Open
Contact Close
3
NOTE
Courtesy of NationalSwitchgear.com

GE Feeder Management Relay 750 Specifications

General

Brand	GE
Model	Feeder Management Relay 750
Category	Protection Device
Language	English