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Load-Switch-MFKN12A-12

Load Switch MFKN12A-12

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Description

 

The MFKN7-12 load switch is a three-phase autogas load switch that provides switching on and off under load (without damage) of sections of a three-phase alternating current circuit, with earthed or isolated neutral, in emergency conditions.

 

Rated current, A — 125, 400, 630

Rated voltage, kV — 10

The maximum operating voltage, kV — 12.7

Rated frequency, Hz — 50

Rated short-time withstand current, kA / s — 12.5 / 4 20/2

Rated peak withstand current, kA — 31.5 / 50

Impulse voltage (peak) / ground, kV — 75/85

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Parameters

 

Operating Conditions of MFKN7-12

  1. Altitude: up to 1000 m.
  2. Ambient temperature: from -45°C to + 45°C.
  3. Environmental Humidity: the average value of relative humidity during the day is not more than 95%;
  4. Seismic resistance up to 8 points.
  5. Do not operate in places where the circuit breaker may be exposed to flammable gas, where there is a danger of explosion, the risk of chemical corrosion, and where the equipment is subject to strong vibration.
  6. Estimated service life — 20 years
  7. Warranty Period — 12 months

MFKN7-12D Indoor High Voltage Load Break Switch

Load-Switch-MFKN12A-12-1

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Solutions

 

MFKN12A-12D Series air blast load break switch and MFKRN12A-12D series air blast load break switch-fuse combination apparatus are new series switchgear applies to three-phase electric distribution system of rated 12KV, acting as protecting and control apparatus for transformers, cable and overhead wiring. These series are especially applicable in rural, urban terminal substation and prefabricated substations, as well as ring network power supply.

 

MFKN12A-12D Series air blast load break switch can break and make load current and over current.

MFKRN12A-12D Series air blast load break switch can break and make over-current, load current and short circuit current (limited current fuse).

 

This Product is featured with impact structure, aesthetic appearance reliable interlock and high insulating level. In the spring storage operating mechanism, ON/OFF speed is free from the influence of the manpower.

For the arc-extinguish electric arc-extinguish inside the insulatir1g cove r， the free gas occurs at sparking do not cause descend of insulating level between phases and phase to earth. The insulating cover clapboard separates electrified part thus boost protection 9rade of ring main unit. The copper tungsten contact and main contact brings along reliable conductivity and long life. This Product achieves sound fame due to easy maintenance and operations as well as reliable performance. It is in compliance with per EC62271-105.

Load-Switch-MFKN12A-12-2

An SF6 load switch, or load break switch (LBS), utilizes sulfur hexafluoride (SF6) gas as an insulating and arc-quenching medium. Being colorless, odorless, and non-toxic, SF6 offers outstanding dielectric strength, making it a popular choice for high-voltage switching applications.

 

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