Protective Mutual Inductor Comprehensive Characteristic Electrical
Test Equipment
Production Description:
HZVA-402 mutual inductor comprehensive characteristic tester is a
automatic CT, PT characteristic tester. Test including CT volt
ampere characteristic test, PT volt ampere characteristic test, CT
ratio and polarity. It is a special test device for relay
protection and high voltage isolation of current mutual inductor
test and voltage mutual inductor test.
Product Features:
Protective mutual inductor:
◆ Automatic controlling during the CT test process, automatic
recording data and scanning voltammetry curve.
1) Automatically set protection current and protection voltage,
automatically adjust stepping
2) Can test 5 groups current, voltage value(voltage under appointed
current or current under appointed voltage)
3) Automatically give the reference turning point(voltage and
current)
4) 220V and 380V power source, meet field requirements
◆ Automatically drawing 10% and 5% error curve
◆ Can detect known current mutual inductor and non-known current
mutual inductor ratio
◆ Automatic controlling during the PT test process, automatic
recording data and drawing voltammetry curve
◆ Can detect known voltage transformer and non-known voltage
transformer ratio
◆ 320*240 large liquid crystal screen display. Easy to connect and
operate
◆ Can save and print all test data, convenient for checking
Metering current mutual inductor:
1. Meet the national standard point of 1%-120% (S level) regulated
measurement error(angle difference and ratio difference) of testing
current mutual inductor and arbitrary point of the current mutual
inductor.
2. Meet the standard point of 1%-200% (S level) any error(angle
difference and ratio difference) of testing current mutual inductor
and arbitrary point of the current mutual inductor.
3. One time complete measurement and display(measurement in
accordance with standard ) of standard point and random point
error(angle difference and ratio difference) of the upper limit
load and the lower limit load of the current mutual inductor.
4. One time complete measurement and display of standard point and
random point error(angle difference and ratio difference) of two
sets of the actual load of the current mutual inductor.
5. Detect the ratio and polarity of current mutual inductor.
Product Parameters:
| Measurement Method | Output Range | Maximum Output Current | Measurement Accuracy |
| Single Machine 220V | 0~550V | 2A | <0.5% |
| Single Machine 380V | 0~950V | 6A | <0.5% |
| Support External Booster | 0~2500V | 2A | <0.5% |
| Ratio Range | CT: 5A/5A~25000A/5A (5A/1A~5000A/1A)±0.2% |
| PT | Full range measurement(electromagetic type) ±0.2% |
| Error Measurement Range | 5A/5A~10000A/5A(5A/1A~5000A/1A) |
| Limit Error | ±0.1% |
| Measurement Error | Rated Current | Ratio Difference(±%) | Angle Difference(±/) |
| 1% | 0.25 | 10 |
| 5% | 0.20 | 6 |
| 20% | 0.15 | 4 |
| 100% | 0.1 | 2 |
| 120% | 0.1 | 2 |
| 200% | 0.1 | 2 |
| Stability | 0.05 | 2 |
| CT Secondary Load | 1Ω~25Ω ±2% | PT secondary load | 10VA~400VA ±2% |
| Environment Temperature | 0~40℃ | Environment Humidity | <85% when 25℃ |
| Power Supply | AC220V, ±10%/ 50Hz/60Hz ±2% |
| DC Resistance | 0.0~0.1Ω±3%; 0.1~50Ω±1% |
Quality Guarantee: One year quality guarantee after shipment.
