Rockwell Automation Publication 20Y-TG001C-EN-P - April 2017 67
Precharge Component Section Chapter 6
Table 5 - 600/690 Volt Precharge Fuse Rating
Test the Control Transformer
(T4) and 24V DC Power Supply
(T10)
For AFE in IP20 2500 MCC Style Enclosure
To test the control transformer and power supply in an IP20 2500 MCC Style
enclosure, follow these steps.
1. If present, remove the protective barriers.
See Remove AFE Protective Barriers
on page 44.
2. Locate the control transformer (T4) and 24V DC power supply (T10).
The control transformer (T4) is on the left side of the input circuit
breaker (Q0). The 24V DC power supply (T10) is located in the
bottom of the control box.
Frame
Size
Enclosure Style Fuse Fuse Holder
(1)
(1) Fuse holder holds a quantity of three fuses.
Amps Type Type
10 IP20 2500 MCC 30 Bussmann DFJ-30 Bussmann CH30J3
IP21 Rittal 32 ABB OFAA000GG32 ABB O540D12000
ATTENTION: Perform these tests only with qualified personnel.
During these tests, the AFE is powered. Take proper precautions to
avoid injury from electric shock.
24V DC Power Supply (T10)
Control Transformer (T4)
Front View
(shown with enclosure doors removed)
Control Box (on front of enclosure door; shown
with control box cover removed)
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