Switches; Communication [11]; Option Switches [14] - GE 735 Instruction Manual

3.4 SWITCHES

3.4 SWITCHES
Switches are used to set the communication parameters. Move the switch to the right for a 1 or ON. To use the communica-
tions capability of the 735/737, a unique address must be chosen and the baud rate must match the system selected. Avail-
able baud rates of 1200, 2400, 9600, and 19200 are selected using switches 1 and 2 as follows: (ON = switch to right).
SWITCH 2
OFF
OFF
ON
ON
Chapter 4: COMMUNICATIONS describes the required data frame and message structure. Up to 31 relays (slaves) can be
3
connected on a twisted pair communications link to a single master. Each relay must have a unique address from 1 to 31 or
address conflicts will occur. Address 0 is reserved for broadcast mode and should not be used.
To select a given address, set switches 3 to 7 so the indicated numbers add up to the correct address. For example,
address 14 = 2 (4 on) + 4 (5 on) + 8 (6 on), with remaining switches 3 (=0) and 7 (=0) off. When switch 8 "TEST" is on, the
735/737 will accept communication commands to simulate different dial settings with computer controlled phase and
ground currents for testing and training purposes. Protection is disabled in the test position once simulation commands are
received from the communication port. Set this switch OFF to disable simulation during normal operation.
The option switches are selected according to the following table:
Table 3–1: OPTION SWITCHES
1 2
PHASE TIME OVERCURRENT SHIFT
OFF OFF ---
ON OFF ---
OFF ON ---
ON ON ---
GROUND TIME OVERCURRENT SHIFT
--- --- OFF
--- --- ON
--- --- OFF
--- --- ON
SYSTEM FREQUENCY
--- --- ---
--- --- ---
PICKUP/TRIP RELAYS – 737 ONLY
--- --- ---
--- --- ---
--- --- ---
--- --- ---
CUSTOM SCHEME
--- --- ---
--- --- ---
3-8
SWITCH 1 BAUD RATE
OFF 1200 baud
ON 2400 baud
OFF 9600 baud
ON 19200 baud
SWITCHES
3 4 5 6
--- --- ---
--- --- ---
--- --- ---
--- --- ---
OFF --- ---
OFF --- ---
ON --- ---
ON --- ---
--- OFF ---
--- ON ---
--- --- OFF
--- --- OFF
--- --- ON
--- --- ON
--- --- ---
--- --- ---
735/737 Feeder Protection Relay
FUNCTION
7 8
--- --- phase time overcurrent shift x 1.0
--- --- phase time overcurrent shift x 0.5
--- --- phase time overcurrent shift x 0.8
--- --- phase time overcurrent shift x 1.1
--- --- ground time overcurrent shift x 1.0
--- --- ground time overcurrent shift x 0.5
--- --- ground time overcurrent shift x 0.8
--- --- ground time overcurrent shift x 1.1
--- --- frequency: 60 Hz
--- --- frequency: 50 Hz
OFF --- pulsed trip only
ON --- latched cause of trip only
OFF --- pickup only
ON --- pickup & latched cause of trip
--- OFF standard factory defaults
--- ON programmed option settings
3 SETUP AND OPERATION

3.4.1 COMMUNICATION [11]

3.4.2 OPTION SWITCHES [14]

GE Power Management