Voltage Inputs - GE MI-869 Instruction Manual

CHAPTER 2: INSTALLATION

Voltage Inputs

869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
The 869 relays have four channels for AC voltage inputs, each with an isolating
transformer. Voltage transformers up to a maximum 5000:1 ratio may be used. The
nominal secondary voltage must be in the 10 to 240 V range.
The 869 supports wye and delta (or open delta) VT connections. The typical open delta VT
wiring diagram is shown in the following figure: Open Delta VT Connections. The typical
wye VT wiring diagram is shown in the figure: Typical Wiring diagram.
Figure 2-24: Open Delta VT Connections
ELECTRICAL INSTALLATION
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