Model 687 Current Transformer
Introducing the Model 687 Current Transformer, a precision-engineered device, distributed by Spectrum Industries. Designed to deliver accurate current measurement in a variety of electrical applications, this current transformer is an essential component for professionals seeking reliable performance and durability. Whether used in industrial, commercial, or utility settings, the Model 687 provides consistent and precise readings, ensuring your systems operate efficiently and safely.
Overview
Introducing the Model 687 Current Transformer, a precision-engineered device, distributed by Spectrum Industries. Designed to deliver accurate current measurement in a variety of electrical applications, this current transformer is an essential component for professionals seeking reliable performance and durability. Whether used in industrial, commercial, or utility settings, the Model 687 provides consistent and precise readings, ensuring your systems operate efficiently and safely.
a global leader in electrical equipment and innovation, the Model 687 embodies advanced engineering and quality craftsmanship. Its robust construction and high-quality materials guarantee longevity and reliable operation even under demanding conditions. The transformer is engineered to meet industry standards, offering excellent accuracy across a wide range of current levels. Its compact design makes it easy to install and integrate into existing electrical systems without compromising space or accessibility.
Spectrum Industries is proud to distribute this top-tier product, providing customers with access to ’s renowned technology and reliability. The Model 687 Current Transformer is ideal for use in metering, protection, and control applications, making it a versatile choice for electricians, engineers, and facility managers. With Spectrum Industries’ commitment to quality and customer satisfaction, you can trust that this product will meet your current measurement needs with precision and dependability.
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Product Specifications
- Frequency
- 50–400 Hz
- Insulation BIL
- 10 kV
- Weight
- 55 lbs
- Application
- Metering, Protection
- Standards
- UL, ANSI/IEEE C57.13, IEC 44-1
- Window Diameter
- 7.62 in
- Case Color
- Gray
- Insulation Voltage Class
- 0.6 kV
- Secondary Terminals
- Brass screws No. 10-32 with one flatwasher and lockwasher
- Multi-Ratio Option
- Multi-ratios available on request, consult factory
- Revenue Metering Approval
- Industry Canada No. AE-0645
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 | 1.5 | 0.018 |
| 75 | 5 | 75:5 | — | — | 2 | 1.5 | 0.027 |
| 100 | 5 | 100:5 | C20 | — | 2 | 1.5 | 0.036 |
| 150 | 5 | 150:5 | — | 1.2B0.2 | 2 | 1.5 | 0.055 |
| 200 | 5 | 200:5 | C50 | 0.6B0.1 | 2 | 1.5 | 0.073 |
| 250 | 5 | 250:5 | — | 0.6B0.2 | 2 | 1.5 | 0.091 |
| 300 | 5 | 300:5 | — | 0.3B0.1 | 2 | 1.5 | 0.109 |
| 350 | 5 | 350:5 | C100 | 0.3B0.2 | 2 | 1.5 | 0.127 |
| 400 | 5 | 400:5 | — | 0.3B0.5 | 2 | 1.5 | 0.146 |
| 500 | 5 | 500:5 | — | 0.3B0.5 | 2 | 1.5 | 0.182 |
| 600 | 5 | 600:5 | C200 | 0.3B0.5 | 2 | 1.5 | 0.218 |
| 750 | 5 | 750:5 | — | 0.3B0.5 | 2 | 1.5 | 0.273 |
| 800 | 5 | 800:5 | — | 0.3B1.8 | 2 | 1.5 | 0.291 |
| 1000 | 5 | 1000:5 | — | 0.3B1.8 | 2 | 1.5 | 0.446 |
| 1200 | 5 | 1200:5 | C400 | 0.3B1.8 | 2 | 1.5 | 0.535 |
| 1500 | 5 | 1500:5 | — | 0.3B1.8 | 2 | 1.5 | 0.669 |
| 1600 | 5 | 1600:5 | — | 0.3B1.8 | 2 | 1.5 | 0.714 |
| 2000 | 5 | 2000:5 | — | 0.3B1.8 | 2 | 1.5 | 0.832 |
| 2500 | 5 | 2500:5 | — | 0.3B1.8 | 1.33 | 1 | 1.04 |
| 3000 | 5 | 3000:5 | C800 | 0.3B1.8 | 1.33 | 1 | 1.248 |
| 3500 | 5 | 3500:5 | C800 | 0.3B1.8 | 1.33 | 1 | 1.827 |
| 4000 | 5 | 4000:5 | C800 | 0.3B1.8 | 1 | 0.75 | 2.617 |
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