AC 400V Surge Protective Device

The GNS1-C/420-40 AC 400V Surge Protective Device, supplied by China-based manufacturer Zhejiang Soutya New Energy LLC, delivers 420 V AC (Uc) protection for three-phase 400 V networks with 40 kA nominal and 80 kA maximum discharge-current capability, providing Class II surge protection for industrial distribution boards and switchgear.

Technical Parameter

Application scenarios

1.Main LV switchgear 400 V, 50 Hz three-phase TN-S/TN-C-S systems: installed after the main breaker as Class II surge-protection node, diverting lightning or switching overvoltages.

2.Industrial motor-distribution boards Incoming side of VFD, servo and MCC panels; suppresses switching surges and induced lightning, safeguarding expensive power semiconductors.

3.Data-center rack PDUs 400 V dual-bus or triple-bus architecture; hot-swappable module permits on-line replacement, keeping servers, UPS and battery banks running.

4.Commercial building floor substations Feeder circuits downstream of transformers; reduces equipment trips and insulation breakdown caused by external surges or ground-potential rise.

5.Renewable-energy enclosures 380 V PV AC combiner boxes and PCS AC terminals; works with DC SPDs to provide complete AC/DC surge immunity.

6.Rail & tunnel power distribution 400 V traction ring-main cabinets and platform lighting boards; withstands strong EMI and guarantees reliable signalling and communication power.

7.Shore-to-ship supply & EV-charging parks 400 V bus feeding high-power chargers; mitigates paralleling surges, extends charger-module life and cuts maintenance downtime.

Installation location and usage

GNS1-C

C degree thunder current SPD protection, used as the iso-electric level connection when there is a thunder attack;install the surge protector at the cross between LPZOB and LPZ1 or LPZ2;Normally the protector is installed in the power distribution box of building power distribution cabinet,computer center, telecom equipment room, elevator control room, wiring TV equipment room, building self-control room, safe monitoring center, fire control center, industry self-control room, frequency inverter control room, hospital surgery room, ICU room and the place where electronic medical equipment; And it is also can be installed in the residual lighting power distribution box below 6 floor ,for villa ,the SPD should be installed in the resident power distribution box.

GNS1-D

The SPD is installed at the cross between LPZand LP23 or between LPZ2 and LPZ3.It is suitable to the residual power distribution box ,computer equipment, telecom equipment, electronic equipment or the socket box at front of control equipment or near the equipment.

Components introduction

Invalid tripping device

There is invalid tripping device on the protector modular. When the protector is invalid cause of over thermal, breakdown, the invalid tripping device can separate from the power grid automatically and the indication signal is sent out. When the protector is normal, the green is displayed. When invalid tripping, red is displayed.

Alarming apparatus

The alarming apparatus is power supplied by 220 V AC. The indication lamp is green when the protector work normally, normal open contact is closed and the normal closed contact is open. Audio light alarming function: when the protection modular is invalid, the alarm will be beeping, the normal green lamp will be changed into red lamp at the same time. When the maintainer press the stop button, the buzz will stop, but the red lamp still is on. If the fault is not solved within 24 hours, the alarming apparatus will send out beep once again.

Remote signal contact

The protector can be with remote signal contact. The contact is normal open. If one or more modular of protector is invalid, the contact will be closed and send out fault signal. The rated parameter of remote signal contact is AC 36V, 1A.