Control Power - GE 750 Instruction Manual

Electrical Installation
NOTE

Control Power

CAUTION
GE Multilin
FIGURE 3–15: Line VT Connections
If Delta VTs are used, the zero sequence voltage (V
polarizing voltage (–V ) will be zero. Also, with this Delta VT connection, the phase-
0
neutral voltage cannot be measured and will not be displayed.
The single phase input is designated as the "line voltage". The line VT input channel,
used for the synchrocheck feature, can be connected for phase-neutral voltages V
V , or V ; or for phase-phase voltages V
bn cn
Control power supplied to the relay must match the installed power
supply range. If the applied voltage does not match, damage to the
unit may occur. All grounds MUST be connected for normal operation
CAUTION
regardless of control power supply type.
The label found on the left side of the relay specifies its order code or model
number. The installed power supply's operating range will be one of the following.
LO: 20 to 60 V DC or 20 to 48 V AC
HI: 88 to 300 V DC or 70 to 265 V AC
The relay should be connected directly to the ground bus, using the
shortest practical path. A tinned copper, braided, shielding and bonding
cable should be used. As a minimum, 96 strands of number 34 AWG should
be used. Belden catalog number 8660 is suitable.
FIGURE 3–16: Control Power Connection
http://www.GEmultilin.com
Feeder Management Relay
) and neutral/sensitive ground
0
or V as shown below.
ab cb
750/760
,
an
3–11