CHAPTER 3: INSTALLATION
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
3–17
FIGURE 3–18: Summation Method with Phase CTs
FIGURE 3–19: Summation Method without Phase CTs
3.2.5
Voltage Inputs
The 469 has three channels for AC voltage inputs, each with an isolating transformer.
There are no internal fuses or ground connections on the voltage inputs. The maximum VT
ratio is 300.00:1. The two VT connections are open delta (see FIGURE 3–12:
on page 3–11) or wye (see below). The voltage channels are connected in wye
internally, which means that the jumper shown on the delta-source connection of the
typical wiring diagram, between the phase B input and the 469 neutral terminal, must be
installed for open delta VTs.
Summary of Contents for 469
Page 62: ...2 16 469 MOTOR MANAGEMENT RELAY INSTRUCTION MANUAL CHAPTER 2 INTRODUCTION ...
Page 90: ...3 28 469 MOTOR MANAGEMENT RELAY INSTRUCTION MANUAL CHAPTER 3 INSTALLATION ...
Page 292: ...6 42 469 MOTOR MANAGEMENT RELAY INSTRUCTION MANUAL CHAPTER 6 ACTUAL VALUES ...
Page 313: ...A APPENDIX 469 MOTOR MANAGEMENT RELAY INSTRUCTION MANUAL A 7 HGF5C 808841A1 HGF8 808842A1 ...
Page 315: ...A APPENDIX 469 MOTOR MANAGEMENT RELAY INSTRUCTION MANUAL A 9 808712A1 CDR ...
Page 320: ...A 14 469 MOTOR MANAGEMENT RELAY INSTRUCTION MANUAL A APPENDIX ...