Model 139 Current Transformer
Introducing the Model 139 Current Transformer, a high-quality electrical component and brought to you by Spectrum Industries. Designed to provide precise current measurement and enhance the safety and efficiency of electrical systems, this transformer is an essential tool for professionals in the electrical and instrumentation fields. With its robust construction and reliable performance, the Model 139 ensures accurate readings across a wide range of applications, making it an invaluable asset for both industrial and commercial environments.
Overview
Introducing the Model 139 Current Transformer, a high-quality electrical component and brought to you by Spectrum Industries. Designed to provide precise current measurement and enhance the safety and efficiency of electrical systems, this transformer is an essential tool for professionals in the electrical and instrumentation fields. With its robust construction and reliable performance, the Model 139 ensures accurate readings across a wide range of applications, making it an invaluable asset for both industrial and commercial environments.
a global leader in electrical engineering and manufacturing, this current transformer embodies the company's commitment to innovation, durability, and safety. Spectrum Industries has carefully selected and integrated this product into their extensive line of electrical instrumentation, ensuring that users receive a device that meets the highest standards of quality and performance. Whether used for monitoring power systems, troubleshooting faults, or integrating into complex automation setups, the Model 139 delivers consistent and dependable results.
Designed with ease of installation and maintenance in mind, this current transformer offers a seamless solution for measuring electrical currents safely and accurately. Its versatile design makes it suitable for various applications, from routine system checks to sophisticated industrial processes. Trust in the legacy of ’s engineering excellence combined with Spectrum Industries’ dedication to customer satisfaction to provide you with a reliable and efficient current measurement solution.
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Product Specifications
- Frequency
- 50–400 Hz
- Insulation BIL
- 10 kV
- Weight
- 40 lbs
- Application
- Metering, Protection
- Standards
- UL, ANSI/IEEE C57.13, IEC 44-1
- Window Diameter
- 6.50 in
- Insulation Level
- 600 V, 10 kV BIL full wave
- Terminals
- Brass screws No. 10-32 with flatwasher and lockwasher
- Mounting Bracket Kit
- 0221B01528 (ordered separately)
- Multi-ratio Availability
- Available on request
Specification Table
| Primary A | Secondary A | Ratio (display) | Relay Class | ANSI Metering Class | Thermal Rating Factor @ 30°C | Thermal Rating Factor @ 55°C | Secondary Resistance |
|---|---|---|---|---|---|---|---|
| 50 | 5 | 50:5 | C10 | — | 2 | 2 | 0.018 |
| 75 | 5 | 75:5 | C10 | — | 2 | 2 | 0.027 |
| 100 | 5 | 100:5 | C20 | 1.2B0.1 | 2 | 2 | 0.036 |
| 150 | 5 | 150:5 | C20 | 0.6B0.1 | 2 | 2 | 0.053 |
| 200 | 5 | 200:5 | C20 | 0.6B0.2 | 2 | 2 | 0.071 |
| 250 | 5 | 250:5 | C50 | 0.3B0.1 | 2 | 2 | 0.089 |
| 300 | 5 | 300:5 | C50 | 0.3B0.2 | 2 | 2 | 0.107 |
| 400 | 5 | 400:5 | C50 | 0.3B0.5 | 2 | 2 | 0.142 |
| 500 | 5 | 500:5 | C100 | 0.3B0.9 | 2 | 2 | 0.178 |
| 600 | 5 | 600:5 | C100 | 0.3B0.9 | 2 | 2 | 0.214 |
| 750 | 5 | 750:5 | C100 | 0.3B1.8 | 2 | 2 | 0.267 |
| 800 | 5 | 800:5 | C100 | 0.3B1.8 | 2 | 2 | 0.285 |
| 1000 | 5 | 1000:5 | C200 | 0.3B1.8 | 1.5 | 1.5 | 0.563 |
| 1200 | 5 | 1200:5 | C200 | 0.3B1.8 | 1.5 | 1.33 | 0.676 |
| 1500 | 5 | 1500:5 | C200 | 0.3B1.8 | 1.5 | 1 | 0.845 |
| 1600 | 5 | 1600:5 | C200 | 0.3B1.8 | 1.5 | 1 | 0.901 |
| 2000 | 5 | 2000:5 | C200 | 0.3B1.8 | 1.5 | 1 | 0.823 |
| 2500 | 5 | 2500:5 | C200 | 0.3B1.8 | 1.5 | 1 | 1.029 |
| 3000 | 5 | 3000:5 | C400 | 0.3B1.8 | 1.33 | 1 | 1.235 |
| 3500 | 5 | 3500:5 | C200 | 0.3B1.8 | 1 | 1 | 1.352 |
| 4000 | 5 | 4000:5 | C200 | 0.3B1.8 | 1 | 0.8 | 1.545 |
| 5000 | 5 | 5000:5 | C400 | 0.3B1.8 | 1 | 0.8 | 3.025 |
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