Model JKM-5AC Indoor Current Transformer
Indoor current transformer for protective relaying, metering, and instrumentation; rated 15.5 kV, 110 kV BIL, 5-600 A.
Our JKM-5AC provides reliable indoor current transformer performance for protective relaying, metering, and instrumentation.
Overview
The Model JKM-5AC 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, instruments and control devices. Weight (Approximate)
Constructed with precision-wound cores and robust insulation, the JKM-5AC maintains rated accuracy through repeated thermal cycling, mechanical vibration, and environmental exposure typical of indoor installations. Key ratings: 15.5 kV, 110 kV BIL, 5-600 A. 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
- 60 Hz
- Insulation BIL
- 110 kV
- Weight
- 53 lbs
- Mounting
- Indoor
- Application
- Metering
- Insulation Class Voltage
- 15.5 kV
- Encapsulation
- Vacuum cast polyurethane resin
- Secondary Terminals
- Tin plated brass, compression type, 0.275 in diameter cross-hole, 1/4-28 clamp screw, interlocked shorting device, clear plastic sealable terminal cover
- Primary Terminals
- Tin plated copper bars molded into cast resin insulation; one hole and one slot at each end for 1/2 in bolts
- Base Plate and Mounting
- Stainless steel base plate with four mounting slots; may be mounted in any orientation
- Relay Class (thermal)
- T200
- Primary Bar Size & One-Second Thermal Limit
- Primary bar width 1.50-2.00 in, thickness 0.188-0.38 in; one-second thermal limit 465-51,600 A, both varying by catalog number
Specification Table
| Primary A | Secondary A | Ratio (display) | Thermal Rating Factor @ 30°C | Thermal Rating Factor @ 55°C |
|---|---|---|---|---|
| 5 | 5 | 5:5 | 1.5 | 1 |
| 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 | 1.5 | 1 |
| 100 | 5 | 100:5 | 1.5 | 1 |
| 150 | 5 | 150:5 | 1.5 | 1 |
| 200 | 5 | 200:5 | 1.5 | 1 |
| 300 | 5 | 300:5 | 1.5 | 1 |
| 400 | 5 | 400:5 | 1.5 | 1 |
| 600 | 5 | 600:5 | 1.5 | 1 |
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