GE 869 Instruction Manual

Also see for 869: Instruction manual Communications guide

Contents

CHAPTER 2: INSTALLATION ELECTRICAL INSTALLATION869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 2–23Voltage InputsThe 869 relays have four channels for AC voltage inputs, each with an isolatingtransformer. Voltage transformers up to a maximum 5000:1 ratio may be used. Thenominal 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 VTwiring diagram is shown in the following figure: Open Delta VT Connections. The typicalwye VT wiring diagram is shown in the figure: Typical Wiring diagram.Figure 2-27: Open Delta VT ConnectionsA B C X XA B CV V V V VV V VJ9 J10 J11 J12 J13 J14 J16J15VOLTAGE INPUTSSLOT JOPEN DELTA VTCONNECTIONPhase APhase BPhase CSWITCHING DEVICE (52)8-SeriesMOTOR