ETES Transformer Testing Desk

Test Object

22.9kV Single Phase transformers and special transformers,
load voltage and current: AC 0‐650V/78A, AC 0‐1200V/29A, AC 0‐2400V/14.6A
The impedance of tested transformer is within 7%, HV side is 23kV, 11kV, 6kV. LV side is 0.05kV‐2.4kV.

This test bench can conduct below test

• No‐load test including no‐load loss, the percent of no‐load current to rated current.
• Load test including load loss, impedance voltage percentage, automatic temperature conversion and load loss test under 30% or above full current.
• Induced voltage test.

Features

• Manual record test data.
• The data of No‐load test rated voltage.
• The data of Load test can be corrected by temperature (75Ԩ) and rated current.
• In No‐load test, LV side voltage can be monitored.
• In Load test, HV side current can be monitored.
• All test functions and test process can be selected and controlled by buttons of front panel.
• Zero protection, over‐current protection and over‐voltage protection functions.
• CT/PT range switch automatically.
• The test bench will fully control to the whole loop circuit and monitor the measurement.
• Safety alarm system.

Specifications

Transformer Load and No‐load Tester
Voltage range: 0‐1000V
Current range: 0.25‐20A, accuracy 0.2%.
Power accuracy: 0.3%.
Power factor: 0.050‐1.000, accuracy 0.3%
Frequency 40‐70Hz, accuracy 0.1%.
Power P
No‐load current Io, %
No‐load loss Po
Load loass Pk
Impedance voltage Uk
Power Po
Average line voltage Un
Average current In.

HV CT specifications

Voltage range: 3kV
Measuring range: 0.25A‐110A
Accuracy 0.05%
Turns ratio is 100,50,30,20,10,5,2.5/1A

PT specifications

Voltage range: 0.1kV‐3kV(50Hz‐400Hz)
Accuracy 0.05%
Turns ratio is 3,2,1,0.5kV/0.1kV

Variable Frequency Power Supply

Input voltage: Single phase AC380V, 60Hz
Measuring range: 0‐800V
Rated capacity: 30kVA
Output current: 0‐37.5A
Output frequency: 180Hz, 240Hz, 400Hz±2%

Intermediate Transformer

Capacity: 40kVA
Input Voltage: Single phase 500V
Output Voltage: 0‐650V‐1200V‐2400V

100kVA Single Phase Regulator

Input voltage: Single phase 380V/60Hz, output voltage 20‐650V.
Max. Load current: 154A
It is non contact regulating, easy to use.
When input voltage is constant, it can adjust output voltage smoothly with load. It is designed by rated frequency 60Hz.

PDF Link Here : Download Transformer Testing Desk

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