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MNS Type Low-Voltage Switchgear

MNS Type Low-Voltage Switchgear
MNS Type Low-Voltage Switchgear
Product Code : 14
Brand Name : BIG PAWER ELECTRCIAL TECHNOLOGY
Product Description

MNS Type Low-Voltage Switchgear

Overview

MNS type low-voltage switchgear is researched and developed by our company on the basis of improvement of component choice and cabinet structure. Meanwhile it combines with our country's development trend of low voltage switchgear. It is suitable for power plant, substation, petrochemical industry, metallurgical industry, steel rolling and so on where the electrical system is that rated working voltage is 66oV and the below and the frequency is 50~6oHz as application of electricity exchange and equipment control.

This low-voltage switchgear is in accord with the fifthly part of IEC6043P VDEO660, GB7251-1991Low-voltage switchgear and control gear and JB/T9661Low-voltage withdrawable switchgear.

Standards and specifications

  • IEC60493 Low-voltage switchgear and control gear combination
  • GB7251.1-2005 Low-voltage switchgear assembly and control the first part
  • Q/HD. J5 090-2007 Enterprise standard of MNS series low-voltage switchgear
  • ZBK36001- 89 Low-voltage withdrawable switchgear

Working conditions

Ambient air temperature is between +40oC and -5oC, while, average temperature in 24h is no more than +35oC.

Atmospheric Conditions: Clean air, relative humidity is no more than 50% at the highest temperature +40oC, relative higher humidity is admissible at lower temperature, for example, it is 90% at +20oC.

Should consider the change of temperature, there is moderate dewing in accident.

Altitude is no more than 2000m.

Pollute grade is 3.

The equipment is applied to transportation and storage process at the below temperature: Between -25oC and +55oC. It can up to be +70oC in short time (no more than 24h). At the extreme temperature, it should not be subject to unrecoverable damage. Meanwhile, it should run well at normal condition.

If the above application conditions can not be met, the user should confer with the manufacturer to solve it.

Applications

MNS type low-voltage switchgear (short as equipment) is a modularized and multifunctional low-voltage distribution cabinet. It is applied in the field of petroleum, chemical industry, metallurgical industry, industrial and mining enterprises and infrastructure which need high reliability low voltage system and distributing and motor control system. MNS is whole series low-voltage switchgear and can meet full range requirement. In the low voltage system of below 500oA, MNS can provide high standard reliability and safety. The special profile structure and connection manner and compatibility to various components can meet the requirement of harsh period and power supply continuity.

Main circuit rated voltage(V)

AC 380(400),(660)

Auxuliary Circuit rated voltage (V)

AC 220, 380(400)

DC 110, 220

Rated frequency(Hz)

50(60)

Rated insulated voltage(V)

660(1000)

Rated current (A)

Levelbus

<55000

Vertical bus (MCC)

1000

Bus rated short-time withstand current(kA/1S)

50\80\100

Bus rated peak withstand current(kA/0.1S)

105\176\220

Power frequency test voltage(V/1 min)

Main circuit

2500

Auxiliary circuit

1760

Bus

Three-phase four-wire system

A.B.C.PEN

Three-phase five-wire system

A.B.C.PE.N

Protection grade

IP30, IP40, IP54


BIG PAWER ELECTRCIAL TECHNOLOGY XIANGYANG CO., LTD.

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