Model JKC-3 Indoor Current Transformer
Indoor current transformer for protective relaying, metering, and instrumentation; rated 60 kV.
Our JKC-3 provides reliable indoor current transformer performance for protective relaying, metering, and instrumentation.
Overview
The Model JKC-3 Indoor Current Transformer is engineered for indoor service in utility, industrial, and commercial electrical distribution installations, targeting protective relaying, metering, and instrumentation. Designed for indoor service; suitable for operating meters, relays, and control devices. ANSI Meter Accuracy Classification, 60 Hz Meter Class Burden B-0.1, B-0
Constructed with precision-wound cores and robust insulation, the JKC-3 maintains rated accuracy through repeated thermal cycling, mechanical vibration, and environmental exposure typical of indoor installations. Key ratings: 60 kV. Design conforms to IEEE C57.13 (where applicable) for instrument-transformer accuracy and dielectric testing.
Typical deployments include substation switchgear, generator and transformer protection, revenue metering, feeder and motor protection, and control-room instrumentation. Refer to the attached data sheet for complete ratio, burden, accuracy class, and dimensional details; contact our engineering team for custom ratings, extended range, or non-standard configurations.
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Product Specifications
- Frequency
- 50–60 Hz
- Insulation BIL
- 60 kV
- Weight
- 18 lbs
- Mounting
- Indoor
- Application
- Metering, Protection
- Relay Accuracy Class
- T50
- Meter Accuracy Classification
- B-0.1, B-0.2, B-0.5 (burden 0.3, 60 Hz)
- Weight
- 18/16 lbs
- Dielectric Test — Voltage
- 5
Specification Table
| Primary A | Secondary A | Ratio (display) | Thermal Rating Factor @ 30°C | Thermal Rating Factor @ 55°C |
|---|---|---|---|---|
| 10 | 5 | 10:5 | 1.5 | 1 |
| 15 | 5 | 15:5 | 1.5 | 1 |
| 20 | 5 | 20:5 | 1.5 | 1 |
| 25 | 5 | 25:5 | 1.5 | 1 |
| 30 | 5 | 30:5 | 1.5 | 1 |
| 40 | 5 | 40:5 | 1.5 | 1 |
| 50 | 5 | 50:5 | 1.5 | 1 |
| 75 | 5 | 75:5 | — | — |
| 100 | 5 | 100:5 | — | — |
| 150 | 5 | 150:5 | — | — |
| 200 | 5 | 200:5 | — | — |
| 300 | 5 | 300:5 | — | — |
| 400 | 5 | 400:5 | 1.5 | 1 |
| 600 | 5 | 600:5 | 1.5 | 1 |
| 800 | 5 | 800:5 | 1.5 | 1 |
| 1200 | 5 | 1200:5 | 1 | 0.75 |
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