The use of high and low pressure CT ratio tester

Zc-611 high and low voltage CT transformation ratio tester is a new generation of transformation ratio tester developed by our company by virtue of years of experience in R & D and production of intelligent instruments and adapted to the needs of users on site. It can measure the high-voltage primary current and low-voltage secondary current of high-voltage metering device of 35kV and below system without disconnection and continuous power on site, and can calculate the transformation ratio and transformation ratio error.

Zc-611 high and low pressure CT transformer ratio tester has many advantages. First of all, the current signal collected by the high-voltage clamp meter installed at the end of the high-voltage insulating rod is transmitted to the hand-held terminal by wireless transmission mode, and the terminal directly collects the secondary current of the low-voltage current transformer.

 

Secondly, the handheld terminal will calculate the primary / secondary current and transformation ratio of current transformer at a glance according to the received data in real time. Clamp design is adopted for clamp meter. The primary wire can be clamped in and out by pushing and pulling the connecting insulating rod lightly. The pulling high-voltage insulating operating rod can extend up to 5m to ensure personal safety during operation.

 

 

 

Here is a brief introduction to the use of zc-611 high and low voltage CT transformation ratio tester:

 

Test preparation:

 

1. Check the appearance of all parts of the instrument, and carry out the next step only when there is no damage, deformation, pollution or water stain;

 

2. Turn on the power switch, observe the voltage value and the percentage of residual power of each part of the battery in the LCD screen to see whether the battery power is sufficient;

 

3. Check whether the operation of insulating rod is normal, whether the function of locking part of each rod is normal, whether it can be locked and relaxed flexibly, and use it only after all items are normal.

 

 

 

Test steps:

 

1. Connect the low-pressure clamp meter with the host machine, and pay attention to the locking of the interface to prevent open circuit;

 

2. Connect the host antenna to ensure the good quality of wireless communication (if the distance between the high and low voltage measured points is very close and there is no obstacle, the antenna can not be connected);

 

3. Turn on the power of the host and select to enter the “transformation ratio measurement” function screen;

 

4. Clamp the low-voltage clamp meter on any one of the wires at the secondary side of the tested transformer, so that the current flows in from the direction marked by the clamp meter at the inflow end, and pay attention to the good closing of the clamp mouth; at this time, the LCD screen of the host can display the amplitude of the secondary current;

 

4. Connect the high-voltage clamp meter with the insulating rod, adjust the length of the insulating rod according to the height of the tested line, and ensure that the connection of each rod is locked;

 

5. Push the insulating rod upward and clamp the high-voltage clamp meter on the primary side conductor of the tested transformer. Pay attention to the inflow direction of current and the good closing of the clamp;

 

6. Read the test results of the host;

 

7. Pull down the insulating rod to separate the high-voltage clamp meter from the tested line. The action should be gentle and do not pull hard to prevent the mechanical structure from being damaged;

 

8. Put up the insulating rod, turn off the power supply of the high-voltage clamp meter, and remove it from the insulating rod;

 

9. Remove the low-pressure clamp from the secondary line, and then remove the low-pressure clamp from the main machine;

 

9. Turn off the power of the host and remove the antenna;

 

10. All accessories shall be received into the packing box and tested.

 

 

The above is the use method of zc-611 high and low voltage CT transformation ratio tester. After purchase, you should read the operation manual in detail and use it again to avoid unnecessary accidents. If you don’t understand, you can contact our customer service personnel at any time.