2–32 850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION
Control Power
Control power is supplied to the relay such that it matches the relay’s installed power
supply range.
CAUTION:
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 regardless of control power supply type.
For more details, please refer to the Power Supply subsection located in the Introduction
chapter.
CAUTION:
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 2-36: Control Power Connection
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