Overvoltage Suppressor (HLY)

1、 Use way

Overvoltage suppressor is a new type of overvoltage protector, mainly used in the power grid of power generation, supply, and consumption enterprises. Used to protect electrical equipment such as transformers, switches, busbars, motors, etc., it can limit atmospheric overvoltage and operational overvoltage caused by various switches, and can reliably limit overvoltage between phases and relative to ground.

Model Description:

　　1Protection object:A-Motor;B-Generator, transformer, busbar circuit, switch ；C-Parallel compensation capacitors;O-Neutral point of motor;

　　2Continuous operating voltage: allows for sustained application inHLYEffective values of power frequency voltage between phases and relative to ground;

　　3Usage environment:WOutdoor type, none‘W’Only applicable indoors;

　　4Additional features:“IM”Active counter for indoor use;

　　　　　 “J”LCD passive counter for indoor use;

　　　　　 “JS”For mechanical counters, outdoor use;

　　5Except for the models in Table 3“W2”All other models adopt a high-voltage cable external connection structure, except for those without high-voltage cable connections.

Therefore, the length of the external cable“L”Nose hole diameter“Φ”Requirement, to be specified by the user at the time of ordering.

2、 Structure/feature

The electrical principle of the overvoltage suppressor is shown in the diagram（1）As shown in the figureFRFor zinc oxide non-linear resistors,CGFor the discharge gap, due to the use of a symmetrical structure, any three of them can be connected separatelyATheBTheCThree phase, another grounding wire.

Compared with current overvoltage protectors, large capacity combined overvoltage protectors have incomparable characteristics compared to other similar products.

　　1The structure adopts a combination of zinc oxide nonlinear resistor and discharge gap to protect each other. The discharge gap makes the charge rate of the zinc oxide resistor zero, and the nonlinear characteristics of zinc oxide cause the arc to extinguish immediately after the discharge gap is activated, without continuous current or waveform interruption. The discharge gap no longer undertakes the arc extinguishing task, which improves the service life of the product.

　　2Under various voltage waveforms, the discharge value is equal and not affected by various operating overvoltage waveforms. The overvoltage protection value is accurate and the protection performance is excellent.

　　3The four-star connection method is used to reliably limit the overvoltage between phases and relative to ground. It can greatly reduce the phase to phase overvoltage. Compared with conventional lightning arresters, the phase to phase overvoltage is greatly reduced, and the reliability of protection is greatly improved.

　　4Adopting a silicone rubber jacket and a high-voltage cable external structure, it has the advantages of easy installation, strong sealing, small size, and shock (vibration) resistance. It can be directly installed on the handcart chassis of the switchgear or in the transformer room.

　　5The ambient temperature used is-40℃~+60 ℃, altitude less than2000m(above2000mPlease specify when placing an order.

　　6Intermittent arc grounding overvoltage and ferromagnetic resonance overvoltage occur in the system, with energy less than2ms400AWhen subjected to square wave shock energy,HLYIt can have a protective effect.