Model 21I Current Transformer
Introducing the Model 21i Current Transformer, a high-precision instrument and brought to you by Spectrum Industries. Designed to meet the rigorous demands of electrical measurement and testing, this current transformer offers exceptional accuracy and reliability for a wide range of industrial and commercial applications. Whether you're conducting power system analysis, protective relay testing, or calibration procedures, the Model 21i provides the dependable performance needed to ensure precise results.
Overview
Introducing the Model 21i Current Transformer, a high-precision instrument and brought to you by Spectrum Industries. Designed to meet the rigorous demands of electrical measurement and testing, this current transformer offers exceptional accuracy and reliability for a wide range of industrial and commercial applications. Whether you're conducting power system analysis, protective relay testing, or calibration procedures, the Model 21i provides the dependable performance needed to ensure precise results.
a globally recognized leader in electrical and electronic equipment, this current transformer embodies advanced engineering and quality craftsmanship. Spectrum Industries has carefully selected and integrated this product into their lineup to deliver a solution that combines durability, ease of use, and exceptional measurement capability. Its robust construction ensures long-term stability, even in demanding environments, making it an ideal choice for professionals who require consistent and accurate current measurements.
The Model 21i Current Transformer features a compact design with straightforward operation, allowing technicians and engineers to perform accurate readings efficiently. Its compatibility with various testing setups and measurement systems makes it a versatile tool in any electrical testing laboratory or field environment. With the backing of ’s trusted reputation and Spectrum Industries’ commitment to quality, this current transformer is a reliable investment for those seeking precision and dependability in their electrical measurement needs.
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Product Specifications
- Frequency
- 50–400 Hz
- Insulation BIL
- 0.7 kV
- Weight
- 9.92 lbs
- Application
- Metering, Protection
- Standards
- UL, ANSI/IEEE C57.13, IEC 44-1
- Window Diameter
- 31.7 mm
- Terminals
- Brass studs ASA 8-32 with flatwasher, lockwasher, and regular nut
- Mounting Bracket
- Kit 0221B00541 (order separately)
- Multi-Ratio Availability
- Available upon request
- Revenue Metering Approval
- Industry Canada AE-0657
- Secondary Winding Resistance Reference
- Ohms @ 75 degrees C
Specification Table
| Primary A | Secondary A | Ratio (display) | Secondary Resistance |
|---|---|---|---|
| 50 | 5 | 50:5 | 0.025 |
| 75 | 5 | 75:5 | 0.042 |
| 100 | 5 | 100:5 | 0.063 |
| 150 | 5 | 150:5 | 0.06 |
| 200 | 5 | 200:5 | 0.126 |
| 250 | 5 | 250:5 | 0.158 |
| 300 | 5 | 300:5 | 0.168 |
| 400 | 5 | 400:5 | 0.253 |
| 500 | 5 | 500:5 | 0.283 |
| 600 | 5 | 600:5 | 0.339 |
| 750 | 5 | 750:5 | 0.42 |
| 800 | 5 | 800:5 | 0.452 |
| 1000 | 5 | 1000:5 | 0.565 |
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