Automatic CT Testing SystemZCHG-12-2000A

ZCHG-12-2000A Automatic CT Testing System is a new generation of transformer automatic accuracy test system developed by our company to adapt to the fast and accurate characteristics of modern current transformer calibration. The device is composed of ZC-103 Transformer Verification meter, ZC-113B Programmable CT Load Box, variable frequency power supply, transformer test bench and so on. The operator can set the type, range, accuracy level, secondary load, power factor, transformer station position and other main parameters of the transformer to be tested through the computer error verification management software. Through RS485 transmission and control, the measurement work of 12 current transformers with the same ratio can be completed at one time, which greatly improves the work efficiency.

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Features and Advantages

1.The device has three test modes: on-line automatic, single-machine automatic and single-machine manual.

2.The device adopts RS485 communication port, stable communication signal and strong anti-interference ability.

3.The primary and secondary wiring of the current standard transformer is automatically switched according to the parameters set by the computer.

4.You can choose any station for verification, and display the station in the test process synchronously.

5.The system has a variety of perfect protection functions such as over current and over voltage protection, polarity error, signal failure, etc

6.The error management software can record, print and back up the testing data according to the requirements of the verification regulations, and modify the certificate format as required

7.The device appearance design is beautiful, humanized function design, automatic function display, greatly optimize the working environment

Parameter

Environmental conditions for the use of CT testing system
CT Testing system parameters
Programmable CT Load boxTechnical Parameters

Environmental conditions for the use of CT testing system
Temperature	-10℃~50℃
Relative humidity	<80% (25℃)
Elevation	<2500m
Power frequency	50Hz/60Hz±10%
Power supply voltage (control loop and instrument power supply)	220V±10%
Power supply voltage (voltage regulator or variable frequency power supply input)	400V±10%

CT Testing system parameters
Working range	Current	Primary current	5~2000A
		Secondary current	5A
	Accuracy Class	0.02（S）
Measuring range	In-phase component (%)	0.0001 ~ 200.0
	Resolution	0.0001
	Orthogonal component (min)	0.001 ~ 700.0
	Resolution	0.001
	Impedance (Ω)	0.0001 ~ 20.0
	Resolution	0.0001
	Admittance (ms)	0.0001 ~ 20.0
	Resolution	0.0001

Programmable CT Load boxTechnical Parameters
Rated Load	Current	2.5VA~40VA COSΦ=0.8（selectable）
		2.5VA~10VA COSΦ=1.0（selectable）
Measuring range and accuracy	Current	1%~120%（optional 200%）
	Secondary current	5A
	Accuracy	3% ±0.05VA