Product Overview
CT90 series DC resistance testers are mainly used for measuring DC resistance of large and medium-sized transformers, generators, motors, etc. The instrument is set with multiple current levels to meet various measurement needs.
Functional characteristics
1.The entire machine is controlled by a high-speed microcontroller, with a high degree of automation and easy operation.
2.The instrument adopts a new power supply technology with multiple current ranges and a wide measurement range, suitable for measuring the DC resistance of large and medium-sized transformers. It has any temperature conversion function made of copper and aluminum materials, and can touch input any winding temperature and conversion temperature.
3.protection function is complete, which can reliably protect the impact of back electromotive force on the instrument, and the performance is more reliable.
4.Equipped with audible discharge alarm, clear discharge indication, reducing misoperation.
5.Quick response speed, capable of directly converting to on-load tap changer in measurement state, and the instrument automatically refreshes data.
6.The instrument adopts a seven inch color touch screen, with a clear interface for free switching between Chinese and English.
7.The instrument comes with a perpetual calendar clock and power down storage, which can store 1000 sets of test data and can be viewed at any time.
8.The instrument is equipped with RS232 and USB interfaces, which can communicate with computers and store on a USB drive.
9. Download a dedicated app for mobile phones, control and control through dedicated software, upload test data, and facilitate access.
Technical parameters
|
Output current
|
CT90-20A：＜20mA、1A、2.5A、5A、10A、20A
CT90-40A：＜20mA、2.5A、5A、10A、20A、40A
CT90-50A：＜20mA、2.5A、5A、10A、20A、50A
CT90-60A：＜20mA、5A、10A、20A、40A、60A
|
|
Test range
|
CT90-20A：100μΩ~20KΩ
CT90-40A: 50μΩ~20KΩ
CT90-50A: 40μΩ~20KΩ
CT90-60A: 30μΩ~20KΩ
|
|
Accuracy
|
土(0.2%+2d) 10Ω~20KΩ(＜20ma) 土(0.5%+2d)
|
|
Resolution
|
0.1μΩ
|
|
|
Size
|
Host：405×230×355（mm）
|
Case：360×260×180（mm）
|
|
Weight
|
Host：15KG
|
Wir：8KG
|
|
Test cable length
|
Standard 13m
|
Can be customized
|
Enviroment
|
Work temperature
|
-10℃—40℃
|
Humidity
|
＜90%RH，No condensation
|
|
Power supply
|
AC220V土10%
|
Frequency
|
50Hz±1Hz
|
Accessories
|
Sr no
|
Description
|
Unit
|
Qty
|
|
1
|
Host
|
PC
|
1
|
|
2
|
Test cable
|
SET
|
1
|
|
3
|
Power supply cable
|
PC
|
1
|
|
4
|
Operating manual
|
PC
|
1
|
|
5
|
Calibration Certificate
|
PC
|
1
|
|
6
|
Fuse
|
PC
|
2
|
|
7
|
Print paper
|
PC
|
1
|
|
8
|
Packing list
|
PC
|
1
|
|
9
|
Earth wire
|
PC
|
1
|
|
10
|
Serial port cable
|
PC
|
1
|
|
11
|
Test sample
|
PC
|
1
|
0.1Hz VLF AC/DC Hipot tester
