Enumeration Setpoints - GE 750 Instruction Manual

Changing Setpoints

Enumeration Setpoints

SETPOINTS
MESSAGE
Press
SETPOINTS
S1 RELAY SETUP
Press MESSAGE
SETPOINTS
S2 SYSTEM SETUP
GE Multilin
message will momentarily appear as confirmation of the storing process. If
69.28 were entered, it would be automatically rounded to 69.3.
NEW SETPOINT
STORED
Enumeration setpoints have data values which are part of a set whose members are
explicitly defined by a name. A set is comprised of two or more members.
Enumeration values are changed using the VALUE keys.
For example:
1. Move to the
S2 SYSTEM SETUP
message.
VT CONNECTION TYPE:
Wye
2. Press the VALUE key until the "Delta" value is displayed as shown (in this
manual, setpoint values are always shown in double quotation marks).
VT CONNECTION TYPE:
Delta
3. Press the ENTER key to store this change into memory. As before, confirmation of
this action will momentarily flash on the display.
NEW SETPOINT
STORED
The example shown in the following figures illustrates the key presses required to
enter system parameters such as the phase CT primary rating, ground CT primary
rating, bus VT connection type, secondary voltage, and VT ratio.
The following values will be entered:
Phase CT primary rating: 650 A
Ground CT primary rating: 100 A
Bus VT connection type: Delta
Secondary voltage: 115 V
VT Ratio: 14400 / 115 = 125.2
To set the phase CT primary rating, modify the
setpoint as shown below.
PHASE CT PRIMARY
Press the MENU key until the relay displays the setpoints menu header.
[ ]
[ ]
Press
[ ] CURRENT
MESSAGE
SENSING
Press the VALUE
enter the value directly via the numeric keypad.
To set the ground CT primary rating, modify the
setpoint as shown below.
GROUND CT PRIMARY
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BUS VT SENSING
S2 SYSTEM SETUP
Press
[ ]
MESSAGE
keys until 650 A is displayed, or
ENTER
Press the key to store the
setpoint.
S2 SYSTEM SETUP
750/760
Feeder Management Relay
setpoint
VT CONNECTION TYPE
CURRENT SENSING
PHASE CT PRIMARY:
1000 A
PHASE CT PRIMARY:
650 A
NEW SETPOINT
STORED
CURRENT SENSING
1–7