Transformer Board; Figure 17: Instrument Transformer Board - GE MiCOM P747 Agile Technical Manual

MiCOM P747
6.6.2

TRANSFORMER BOARD

Figure 17: Instrument Transformer board

The transformer board hosts the current and voltage transformers, which are used to step down the currents
and voltages originating from the power systems' current and voltage transformers to levels, which can be
used by the unit's electronic circuitry. In addition to this, the on-board CT and VT transformers provide
electrical isolation between the unit and the power system.
The transformer board is connected physically and electrically to the input board to form a complete input
module.
The terminal numbers are as follows:
Terminal Number
Terminal 1
Terminal 2
Terminal 3
Terminal 4
Terminal 5
Terminal 6
Terminal 7
Terminal 8
Terminal 9
Terminal 10
Terminal 11
Terminal 12
Terminal 13
Terminal 14
Terminal 15
P747-TM-EN-1
P747-TM-EN-1.1
VT1, T1
VT1, T2
VT2, T3
VT2, T4
CT1
CT1
CT2
CT2
CT3
Analogue Input Signal
Chapter 3 - Hardware Design
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