Resistance checks and power supply tests, Figure 28 – Rockwell Automation 7763 Medium Voltage OneGear SMC Flex Motor Controller (10-15 kV) User Manual
Page 53
Rockwell Automation Publication 7760-UM001D-EN-P - October 2014
53
Commissioning Procedure
Chapter 2
Figure 28 - Connection for Gate Driver Board
Resistance Checks and Power
Supply Tests
1.
Isolate incoming power to the Incoming Line Unit and, if provided close
Earthing Switch in the Bypass Unit.
2.
Open the doors providing access to the SCR Power trucks as detailed
below. Open the Phase ‘U’ SCR Power Truck Door first, open ‘V’ and ‘W’
phase next as they are interlocked. For re closing operation the operation
sequence is the reverse.
3.
The SCR Power Trucks have to be isolated from Main Power and control
before racking out. The SCR Power trucks are to be racked out to carryout
the Power Supply Test and Resistance Checks.
4.
The Main Power connection of the SCR Power Truck to the Bus is by
copper flexible link to the first and last SCR of the series connections of
SCR in the SCR Power Truck.
connections to bolt the truck in position and the Electrical connections.
Refer to Installation Instructions (Publication
) for
instructions on removing the SCR Power trucks.
J2
TP1
TP2
J6
RX1
RX2
TP3
TP4
J1
J4
J3
J2
TP1
TP2
J6
J4
J3
Gate signal
fibre optic
receiver
Plug-in test
power supply
Current loop CT
connector
Snubber
terminal
Cathode
terminal
Common test
point
+20V test point
Temperature signal
fibre optic transmitter
Yellow LED
+5V test point
Thermistor
connector
Gate/cathode
connector
Overvoltage
sense terminal
ATTENTION: Servicing energized industrial control equipment can be
hazardous. Severe injury or death can result from electrical shock, burn, or
unintended actuation of controlled equipment. Before proceeding, ensure that
all sources of power are isolated and locked out. Verify that all circuits are
voltage free using a hot stick or appropriate voltage measuring device. Any
covers or barriers removed during this procedure must be replaced and securely
fastened before energizing equipment. Where appropriate, the case of test
equipment should be connected to ground.