In the production process of semi-finished and finished power transformers, before new transformers are put into operation, and during the operation of transformers in the power system, according to the preventive test regulations of the Ministry of Electric Power, it is required to regularly test the turns ratio or voltage ratio of operating transformers. The traditional transformer ratio bridge is cumbersome to operate, the readings are not intuitive, and necessary conversions are required, with the test result only providing data for one phase ratio.
The transformer ratio tester completes three-phase ratio testing in one go, with fast test speed and high accuracy. It greatly saves on-site testing time and brings high efficiency to customer testing.
Product Features:
◆ The transformer ratio tester has a wide test range, up to 10000.
◆ The transformer ratio tester has a fast test speed, completing three-phase testing in 7 seconds.
◆ Testing of Z-connected transformers.
◆ The transformer ratio tester has blind test ratio and group test functions.
◆ The transformer ratio tester has a non-volatile clock and date display, and data storage function.
◆ Protection function for reverse connection of high and low voltage.
◆ Protection function for transformer short circuit and inter-turn short circuit.
◆ The transformer ratio tester has a thermal printer output function, fast and silent.
◆ The transformer ratio tester is small in size and light in weight.
Keywords: Guide for Selecting Level 4 Testing Equipment -- Transformer Ratio Tester, Guide for Selecting Level 4 Testing Equipment -- Transformer Ratio Tester
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No. |
Equipment Name |
Unit |
Quantity |
Specification |
|
I |
High Voltage Generation Equipment |
|||
|
1 |
DC High Voltage Generator |
Set |
1 |
DC: 120kV/2mA |
|
2 |
Power Frequency Withstand Voltage Test Device |
Set |
1 |
AC: 30kVA/50kV |
|
Set |
1 |
AC: 6kVA-10kVA/50kV |
||
|
3 |
Variable Frequency Series Resonance Test Device |
Set |
1 |
75kVA/75kV/1A 30-300Hz |
|
4 |
Induced Withstand Voltage Test Device |
Set |
1 |
5kVA/360V 150Hz |
|
II |
Electrical Measuring Instruments |
|||
|
1 |
High Voltage Dielectric Loss Test Device |
Unit |
1 |
1. Dielectric measurement accuracy: 1% 2. Capacitance accuracy: 0.5% 3. Anti-interference variable frequency |
|
2 |
Three-Phase Relay Protection Tester |
Unit |
1 |
Three-phase voltage and current, 2 groups each |
|
3 |
Loop Resistance Tester |
Unit |
1 |
DC: ≥100A |
|
4 |
Transformer Volt-Ampere Characteristic Tester |
Unit |
1 |
500V/5A |
|
5 |
Ground Resistance Tester |
Unit |
1 |
|
|
6 |
Transformer DC Resistance Tester |
Unit |
1 |
DC: ≥10A |
|
7 |
Transformer Ratio Tester |
Unit |
1 |
Digital, Class 0.5 |
|
8 |
Circuit Breaker Characteristic Tester |
Unit |
1 |
|
|
9 |
Insulation Resistance Tester |
Unit |
1 |
DC: 0-5000V 200GΩ, Short-circuit current ≥3mA |
|
III |
Common Instruments and Meters |
|||
|
1 |
Megohmmeter |
Piece |
1 |
DC: 2500V |
|
2 |
Megohmmeter |
Piece |
1 |
DC: 500V |
|
3 |
Digital Dual-Clamp Phase Voltmeter |
Piece |
1 |
Measurement current 1mA-5A |
