GE 750 User Manual

GE Power Management 750/760 Feeder Management Relay 10-
11
10 S3 LOGIC INPUTS 10.8 TRANSFER FUNCTIONS
10
10.8 TRANSFER FUNCTIONS 10.8.1 DESCRIPTION
The following logic input functions are used exclusively for the bus transfer scheme. Refer to Section 14.7:
TRANSFER on page 14–18 for more detail.
If the bus transfer feature of the relay is required in an installation, all logic input functions necessary
for the operation of this scheme must be assigned to contact inputs before any other functions. This is
to ensure there are no conflicts.
10.8.2 SETTINGS
■ TRANSFER FUNCTIONS
■ [ENTER] for more
The Transfer Functions setpoints path is:
\ SETPOINTS \ S3 LOGIC INPUTS \ TRANSFER FUNCTIONS
SELECT TO TRIP:
Disabled
Range: Disabled, Input 1, Input 2, ..., Input 20
Used to select the breaker to trip on prevent-parallel operation.
UNDERVOLT ON OTHER
SOURCE: Disabled
Range: Disabled, Input 1, Input 2, ..., Input 20
Used for permission-to-transfer logic.
INCOMER 1 BREAKER
CLOSED: Disabled
Range: Disabled, Input 1, Input 2, ..., Input 20
Used to track breaker state, for prevent-parallel or permission-to-transfer
logic.
INCOMER 2 BREAKER
CLOSED: Disabled
Range: Disabled, Input 1, Input 2, ..., Input 20
Used to track breaker state, for prevent-parallel or permission-to-transfer
logic.
TIE BREAKER
CONNECTED: Disabled
Range: Disabled, Input 1, Input 2, ..., Input 20
Used to inhibit transfers if the breaker cannot be used to pass current from the
source to the load, such as when it is in the Test or Disconnected positions.
TIE BREAKER
CLOSED: Disabled
Range: Disabled, Input 1, Input 2, ..., Input 20
Used to track breaker state, for prevent-parallel or permission-to-transfer
logic.
BLOCK TRANSFER:
Disabled
Range: Disabled, Input 1, Input 2, ..., Input 20
Used to disable the transfer scheme.
TRANSFORMER LOCKOUT:
Disabled
Range: Disabled, Input 1, Input 2, ..., Input 20
Used to initiate a transfer as source 1 (2) is about to be lost.
SOURCE TRIP:
Disabled
Range: Disabled, Input 1, Input 2, ..., Input 20
Used to initiate a transfer as source 1 (2) is about to be lost.
CLOSE FROM INCOMER1:
DECAY: Disabled
Range: Disabled, Input 1, Input 2, ..., Input 20
Used to signal the bus tie breaker to begin a close operation.
CLOSE FROM INCOMER2:
DECAY: Disabled
Range: Disabled, Input 1, Input 2, ..., Input 20
Used to signal the bus tie breaker to begin a close operation.
NOTE

GE 750 Specifications

General

Brand	GE
Model	750
Category	Relays
Language	English