Models CTW3-60-T50 & CTWH3-60-T50 Medium Voltage Current Transformer
APPLICATION: Metering and relaying. FREQUENCY: 50-400 Hz. MAXIMUM SYSTEM VOLTAGE: 5.6kV, BIL 60kV. CONTINUOUS THERMAL CURRENT RATING FACTOR: 1.5 at 30oC amb., 1.33 at 55oC. amb. 150:5 and 600:5- 1.33 at 30oC. amb., 1.00 at 55oC. amb. 250:5- 1.00 at 30oC. amb., 0.85 at 55oC. amb. Primary terminals are 1/2-13 bolts with one Belleville washer. Secondary terminals are brass studs No. 10-32 with one flatwasher, lockwasher and regular nut. Supplied with short circuiting secondary terminal cover. Vacuum cast polyurethane resin. Other ratios, secondary currents and dual ratios are available. Refer to factory. Approximate weight 20 lbs.
Overview
APPLICATION: Metering and relaying. FREQUENCY: 50-400 Hz. MAXIMUM SYSTEM VOLTAGE: 5.6kV, BIL 60kV. CONTINUOUS THERMAL CURRENT RATING FACTOR: 1.5 at 30oC amb., 1.33 at 55oC. amb. 150:5 and 600:5- 1.33 at 30oC. amb., 1.00 at 55oC. amb. 250:5- 1.00 at 30oC. amb., 0.85 at 55oC. amb. Primary terminals are 1/2-13 bolts with one Belleville washer. Secondary terminals are brass studs No. 10-32 with one flatwasher, lockwasher and regular nut. Supplied with short circuiting secondary terminal cover. Vacuum cast polyurethane resin. Other ratios, secondary currents and dual ratios are available. Refer to factory. Approximate weight 20 lbs.
Request a Quote for Models CTW3-60-T50 & CTWH3-60-T50 Medium Voltage Current Transformer
Product Specifications
- Frequency
- 50–400 Hz
- Insulation BIL
- 60 kV
- Weight
- 20 lbs
- Application
- Metering, Protection
- Standards
- ANSI/IEEE C57.13
- Maximum System Voltage
- 5.6 kV
- Relay Accuracy Class
- T50
- ANSI Metering Accuracy Class (60 Hz)
- 0.3 at B0.1/B0.2/B0.5; 0.6 at B0.9; 1.2 at B1.8
- Primary Terminals
- 1/2-13 bolts with one Belleville washer
- Secondary Terminals
- Brass studs No. 10-32 with flatwasher, lockwasher and regular nut
- Insulation
- Vacuum cast polyurethane resin
- Minimum Spacing Unit-to-Unit
- 0.75 in
- Minimum HV-to-Ground Spacing in Air
- 3.00 in
- Primary Bar Sizes (CTWH3)
- 5-150A: A=0.19, B=1.50; 200-600A: A=0.25, B=2.00
Specification Table
| Primary A | Secondary A | Ratio (display) | Thermal Rating Factor @ 30°C | Thermal Rating Factor @ 55°C |
|---|---|---|---|---|
| 5 | 5 | 5:5 | 1.5 | 1.33 |
| 10 | 5 | 10:5 | 1.5 | 1.33 |
| 15 | 5 | 15:5 | 1.5 | 1.33 |
| 20 | 5 | 20:5 | 1.5 | 1.33 |
| 25 | 5 | 25:5 | 1.5 | 1.33 |
| 30 | 5 | 30:5 | 1.5 | 1.33 |
| 40 | 5 | 40:5 | 1.5 | 1.33 |
| 50 | 5 | 50:5 | 1.5 | 1.33 |
| 75 | 5 | 75:5 | 1.5 | 1.33 |
| 100 | 5 | 100:5 | 1.5 | 1.33 |
| 150 | 5 | 150:5 | 1.33 | 1 |
| 200 | 5 | 200:5 | 1.5 | 1.33 |
| 250 | 5 | 250:5 | 1 | 0.85 |
| 300 | 5 | 300:5 | 1.5 | 1.33 |
| 400 | 5 | 400:5 | 1.5 | 1.33 |
| 500 | 5 | 500:5 | 1.5 | 1.33 |
| 600 | 5 | 600:5 | 1.33 | 1 |
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