Instrument Transformers & Protection
Current Transformers (CT)
Current transformers that step down primary current for meters and protection relays.
- StandardIS 2705 / IEC 61869-2
Circuit Protection
Current Transformers (CT)
Current transformers that step down primary current for meters and protection relays.
Product list
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Guides for this range
Transformers & Power Quality
Protection Relays: Overcurrent, Earth Fault, Motor
A practical overview of overcurrent, earth fault and motor protection relays: what each function does, how IDMT curves and grading work, and what to specify when…
7 min readTransformers & Power QualityCurrent and Potential Transformers: Ratio, Burden, Class
Plain-language guide to current and potential transformers: ratio, burden, accuracy class for metering and protection, 1 A versus 5 A secondaries, and the mistakes that cause…
7 min read