GE SPM Series, Instruction Manual

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GE Power Management SPM Synchronous Motor Protection & Control 8-
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8 ACCESSORIES 8.3 DC CURRENT TRANSFORMER
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8.3 DC CURRENT TRANSFORMER 8.3.1 DESCRIPTION
The standard DCCT primary has a rated 200 A primary and a 50 mA rated secondary (4000:1 ratio). DCCT ter-
minals connect to CM points (7) and (8) (polarity not important). Multiple turns of field able through the DCCT
window may be required to obtain the proper effective CT ratio. The DCCT is required to utilize field current
and/or field overtemperature features. It is available in the optional PG2SPM or PG4SPM accessory packages.
Figure 8–9: DC CURRENT TRANSFORMER
Figure 8–10: DCCT PHYSICAL DIMENSIONS