一、Overview

This device is composed of intelligent control, overvoltage limit technology and single phase switch. The PT open triangular winding on the short - connected bus is used to eliminate the resonance. The recovery voltage amplitude of the fault phase and the uplift speed of the recovery voltage are adopted to eliminate the arc grounding. The zero sequence current of the fault line is used to increase the selectivity of ground protection, so as to find and remove the fault line accurately. Advanced technology and reliable operation. Its main functions are as follows:

1) overvoltage protection function, can the atmospheric overvoltage and operating over-voltage limit to low voltage level, ensure the power grid and electric insulation safety of gas equipment, has greatly reduced the accident caused by over voltage.

2) replace voltage transformer cabinet and provide voltage detection signal.

3) replace the arc suppression coil. It can quickly eliminate the intermittent arc light ground fault, and suppress the intermittent arc light grounding overvoltage. Prevent the further expansion of the accident, reduce the accident rate of the line.

4) can fast effective restriction and elimination of PT ferromagnetic resonance overvoltage, prevent the long time of resonance overvoltage of the system structure of the accelerated aging, prevent resonance overvoltage in power grid set of lightning arrester and the influence of small load, increase the safe and reliable system operation, prolong the service life of equipment in the system.

Two、Technical parameters

Range of application

This device can be applied to 6 ~ 35 kv voltage class effective grounding distribution network neutral point of the arc suppression, harmonic elimination overvoltage protection and single-phase grounding line selection, to improve power supply reliability and safe operation of the system has the obvious effect.

Performance index

1)JT-TX arc elimination and the overvoltage protection combined load rating parameters.

Rated frequency: 50Hz.

Rated voltage: 6KV, 10KV, 35KV.

2) rated parameters of the controller.

Working voltage: ac 220V or dc 220V.

Accuracy of voltage measurement: 0.5%.

Communication interface: rs-485.

Working environment

JT - TX arc suppression harmonic elimination line selection and overvoltage protection comprehensive processing all of the components can be installed in the switch cabinet, and other high voltage switch cabinet group screen together, small volume, low cost, easy installation, its use environmental requirements are as follows:

1) ambient temperature: - 20 ℃ ~ + 40 ℃

2) environmental humidity: 90% (25 ℃), 50% (40 ℃)

3) altitude: less than 3, 000 meters.

4) there is no serious impact on the insulation performance of the device and the explosive medium.

Three、Model specification