1. Device characteristics and parameters

1.1 Main technical features

★ Comprehensive functions, which not only meet the excitation characteristics (i.e. volt-ampere characteristics), transformation ratio, polarity, secondary winding resistance, secondary load, ratio difference and angle of various CTs (such as protection type, measurement type, TP type) It can also be used to test the excitation characteristics, transformation ratio, polarity, secondary winding resistance, etc. of protective PT electromagnetic units.

★ Automatically provide inflection point voltage/current, 10% (5%) error curve, accuracy limit factor (ALF), instrument safety factor (FS), quadratic time constant (Ts), residual magnetization coefficient (Kr), saturation and Unsaturated inductance and other CT and PT parameters.

★ The test meets various transformer standards such as GB1208 (IEC60044-1), GB16847 (IEC60044-6), GB1207, etc., and automatically selects which standard to test according to the type and level of the transformer.

★ Based on the advanced low-frequency test principle, it can handle CT tests with inflection points up to 45KV.

★ Friendly and beautiful interface, all Chinese graphical interface.

★ The device can store 2000 sets of test data and will not be lost in case of power failure. After the test is completed, use a USB flash drive to save it to a PC, use software to analyze the data, and generate a WORD report.

★ The test is simple and convenient. CT direct resistance, excitation, transformation ratio and polarity tests can be completed with one click. In addition to the load test, all other CT tests use the same wiring method.

★Easy to carry, device weight <9Kg.

1.2 Device panel description

The device panel structure is as shown below:

·Red and black S1, S2 terminals: test power output

·Yellow and black M1, M2 terminals: output voltage backtest

·Green and black P1, P2 terminals: induced voltage measurement terminals

·Rotate the mouse: enter numerical values and operation commands

·LCD display: Chinese display interface

·Printer: print test report

1.3 Main technical parameters

Frequency transformer tester

Test purpose: protective CT, protective PT

Output 0~180Vrms, 12Arms, 18A (peak)

CT transformation ratio

Measuring range 1~40000

Accuracy ±0.2%

PT ratio

Measurement range 1~40000

Accuracy ±0.2%

Phase measurement accuracy ±5min

Resolution 0.5min

Secondary winding resistance measurement range 0~300Ω

Accuracy 2%±2mΩ

AC load measurement range 0~300VA

Accuracy 2%±0.2VA

Input power supply voltage AC220V±10%, 50Hz

Working environment temperature: -10°C~50°C, humidity: ≤90%

Dimensions and weight Dimensions 340mm x180mmx330mm Weight <9kg