Product Overview
The on-load tap changer is a moving component connected to the transformer circuit, so the detection of the on-load tap changer has attracted more and more attention. In the "Regulations for Handover and Preventive Testing of Electric Power Equipment", it is required to check the action sequence of the on-load tap changer, measure the switching time, etc. This instrument is mainly used to measure the transition waveform, transition time, transient resistance values, and three-phase synchronization of transformer on-load tap changer.
Functional characteristics
♦ The instrument has large output current and light weight.
♦ When testing YN, Y, and △ type transformers, the resistance value is displayed directly without conversion.
♦ Can be measured with or without windings.
♦ The waveform display automatically adjusts the resistance and time value amplitude based on the sampled value.
♦ It has perfect protection circuit and strong reliability.
♦ 7-inch large LCD display facilitates on-site operation.
♦ 500 sets of data can be automatically saved internally.
♦ Digital management of power supply batteries, with residual power display, residual power alarm, overcurrent protection, and other functions.
♦ With a USB flash disk interface and printer expansion interface, external micro printer can print test data in real time (Printer for optional).
♦ Optional Bluetooth module, which can connect Android system phones and tablet devices to achieve intelligent management and operation.
Technical parameter
|
Output current
|
1.0A、0.5A、0.2A
|
|
Test range
|
Transition
resistance
|
0.3Ω~20Ω(1.0A)
|
5Ω~40Ω(0.5A)
|
20Ω~100Ω(0.2A)
|
|
Transition
time
|
0~500ms
|
|
|
|
Open voltage
|
24V
|
|
Test accuracy
|
Transition resistance
|
±(5% reading±0.1Ω)
|
|
Transition time
|
±(0.1 reading±0.2ms)
|
|
Sampling rate
|
20kHz
|
|
Battery
|
25.2V/2.6AH
|
|
Dimension
|
Host：252×160×65(mm)
|
Portable case：425×335×210(mm)
|
|
Weight
|
Host：2KG
|
Portable case：8KG
|
Environment
|
Temperature
|
-10℃~40℃
|
Humidity
|
＜90%RH，non dewing
|
Accessories
|
Sr no
|
Description
|
Qty
|
|
1
|
Test cable
|
1 set
|
|
2
|
Charging
|
1 pc
|
|
3
|
Earth wire
|
1 pc
|
|
4
|
Carrying case
|
1 pc
|
|
5
|
Calibration report
|
1 pc
|
|
6
|
Operating manual
|
1 pc
|
0.1Hz VLF AC/DC Hipot tester
