Model JKM-5 Indoor Current Transformer
Indoor current transformer for protective relaying, metering, and instrumentation.
Our JKM-5 provides reliable indoor current transformer performance for protective relaying, metering, and instrumentation.
Overview
The Model JKM-5 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. Weight - Shipping/Net (approximate, in pounds) Single-Secondary
Constructed with precision-wound cores and robust insulation, the JKM-5 maintains rated accuracy through repeated thermal cycling, mechanical vibration, and environmental exposure typical of indoor installations. 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
- 110 kV
- Mounting
- Indoor
- Application
- Metering, Protection
- Standards
- ANSI/IEEE C57.13
- System Voltage Class
- 15 kV
- Current Range
- 5 A to 800 A
- Weight (Single-Secondary)
- 55 lbs shipping / 49 lbs net
- Weight (Dual-Secondary)
- 112 lbs shipping / 100 lbs net
- Weight (Tapped-Secondary)
- 112 lbs shipping / 100 lbs net
- Type
- Wound-Type
- Regulatory Approval
- Measurement Canada Approval, T-0285 or AE-0320 or AE-0312
- Overall Accuracy — Accuracy
- 0.3
- Overall Accuracy — Condition
- ANSI metering accuracy class 0.3, burden range B0.1 to B1.8, at 60 Hz
Specification Table
| Primary A | Secondary A | Ratio (display) | ANSI Metering Class | Thermal Rating Factor @ 30°C |
|---|---|---|---|---|
| 5 | 5 | 5:5 | — | 1.5 |
| 10 | 5 | 10:5 | — | 1.5 |
| 15 | 5 | 15:5 | — | 1.5 |
| 20 | 5 | 20:5 | — | 1.5 |
| 25 | 5 | 25:5 | — | 1.5 |
| 30 | 5 | 30:5 | — | 1.5 |
| 40 | 5 | 40:5 | — | 1.5 |
| 50 | 5 | 50:5 | — | 1.5 |
| 75 | 5 | 75:5 | — | 1.5 |
| 100 | 5 | 100:5 | — | 1.5 |
| 150 | 5 | 150:5 | — | 1.5 |
| 200 | 5 | 200:5 | — | 1.5 |
| 300 | 5 | 300:5 | — | 1.5 |
| 400 | 5 | 400:5 | — | 1.5 |
| 500 | 5 | 500:5 | — | 1.5 |
| 600 | 5 | 600:5 | — | 1.5 |
| 800 | 5 | 800:5 | — | 1.2 |
| — | 5 | 50/100:5 | 0.3B0.5 | — |
| — | 5 | 75/150:5 | 0.3B0.5 | — |
| — | 5 | 100/200:5 | 0.3B0.5 | — |
| — | 5 | 150/300:5 | 0.3B0.5 | — |
| — | 5 | 200/400:5 | 0.3B0.5 | — |
| — | 5 | 300/600:5 | 0.3B0.5 | — |
| — | 5 | 400/800:5 | 0.3B0.5 | — |
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