Instrument Transformers
ARCT-KA07 — Cable Type (Toroidal) Current Transformer
Cast-resin ring-type current transformer for metering and relay protection of cable connections. Primary currents from 40 to 4,000 A.
40–4,000 A1 or 5 ACast resin
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ARCT-KA07 toroidal current transformers are mounted directly on the cable and used for metering, measurement and relay protection. Accuracy class and rated burden are manufactured to customer specification. Three sizes: 80×195, 130×195 and 180×250×120 mm.
Technical Specifications
| Parameter | KA07 80/130×195 | KA07 180×250×120 |
|---|---|---|
| Maximum operating voltage (Um) | 0.72 / 3 kV | 0.72 / 3 kV |
| Rated primary current | 40…3,000 A | 200…4,000 A |
| Rated secondary current | 1 or 5 A | 1 or 5 A |
| Accuracy class and burden | As per customer request | |
| Short-time thermal current (Ith) | Min. 100 × Ipr | |
| Rated dynamic current | 2.5 × Ith | |
| Rated frequency | 50 / 60 Hz | 50 / 60 Hz |
