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COMPLIANCE TO CHINESE STANDARD GB 50343-2004

 

If your aim is to comply to GB 50343-2004, the best way to do it is to use MCG surge protectors.

The above standard advises a 3-stage cascading series of surge protectors with 80kA as the first stage, followed by 40kA as second stage, and 20kA as the 3rd stage.  It should be noted that this approach is unique in international surge protection design. 

One single MCG surge protector (such as an Surge Free 160) can match any 3-stage system, is much easier to install, has a longer warranty, and requires no maintenance.  Click here for more information on this subject.

But for installations which must strictly adhere to the above standard, MCG offers the most powerful and economical surge protectors on the market.  

Stage 1:  Surge Free 80XT

80,000 amps of transient protection per phase

Two Individually fused back-up protection paths on each phase

12 times greater joule rating than any comparable product on the market

200kA interrupt current plus thermal disconnects

Relay contacts for remote monitoring  + internal diagnostics

Noise reduction filtering

Fast effective clamping

Built to the specifications of UL 1449 Second Edition and NEMA LS-1, the world’s toughest lightning standard

10 year warranty

Easy installation.  Connection cable included

Stage 2:  Surge Free 40

40,000 amps protection per phase

bi-polar, bi-directional protection to prevent transientdamage

front panel LEDs for status indication

fast clamp response

Stage 3:  Surge Free 20

  : 25 MOV (minimum)

Ip=20kA

  应:在 5 内, 地。

SurgeFree 20 绿 在。

护:消   间,   坏。

计: SurgeFree 20 使 能。

式: 线- 线, 线- 地,相 线- 线, 线- 地。

 

 

NOTE:  At installations where it is critical that electronic equipment never goes offline, and at exposed installations where expensive electronics are subject to direct lightning, more robust surge protectors are recommended.  Click here to see why.

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