Electrical installation
750/760 Quick Reference Guide
7
Figure 8: Typical wiring diagram
The phase sequence is user programmable to be either ABC or ACB rotation.
The voltage transformer input ratings must match the secondary ratings of the VT. The 750/
760 relays have four channels for AC voltage inputs, each with an isolating transformer. The
nominal secondary voltage must be in the 50 to 240 V range. The three phase inputs are
designated as the “bus voltage”. The Bus VT connections most commonly used, wye and
delta (or open delta), are shown in the
Typical Wiring Diagram
. Be aware that these voltage
channels are internally connected as wye. This is why the jumper between the phase B
terminal and the Vcom terminal must be installed with a delta connection.
Summary of Contents for 750
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Page 39: ...Application example 750 760 Quick Reference Guide 35 Figure 17 Typical three line diagram...
Page 41: ...Application example 750 760 Quick Reference Guide 37 Figure 19 Typical control diagram...
Page 42: ...Application example 38 750 760 Quick Reference Guide Figure 20 Typical breaker control diagram...
Page 43: ...Application example 750 760 Quick Reference Guide 39 Figure 21 Typical relay control diagram...
