400A Isolator AC/DC Single Pole Disconnecting Switch with Operating Mechanism 11kv Isolating Switch

GN19-12(C) indoor HV disconnect switch applies to power system of rated voltage 12kV, AC 50/60Hz. It is equipped with CS6-1 manual-operating mechanism and is used to break and make circuit under no-load. There are additional pollution type, high-altitude type and power indicating type. It is made as per IEC 62271-102.

Structure and working principle

The conductive part of GN19-12/400, 630, 1000, 1250 type disconnect switch is fixed on the base by two pillar insulators for each phase. (GN19-12C/400, 630, 1000, 1250 type has one pillar insulator and one porcelain casing insulator.) The three phases are installed in parallel, and the conductive part consists of static contacts of contact knives and contact holders (or conductive rods). Each phase of the contact knife are connected to the middle of the tie insulator, tie insulator and installed on the base of the spindle connected. The spindle is connected to the connecting rod (user-provided) and CS6-1 type of moving mechanism through the handle. The connecting contact knife is composed of two slotted copper plates, which not only increases the heat dissipation area of the contact knife to lower the bottom temperature, but also improves the mechanical strength of the contact knife, so that the dynamic stability of the switch is improved. One end of the contact knife is mounted on the contact block (or on the conductive rod) by a bolt (car of Shaw). GN19-12/1000, 1250 in contact with the installation of magnetic locking plate, plus the purpose of the magnetic locking plate is that when a large short-circuit current to enhance the two groove contact knife between the| attraction. GN19-12/400, 630 disconnect switches have a small limit through current, so there is no need to add a magnetic locking plate.

Model meaning

Use environmental conditions

1. The upper limit of ambient temperature +40ºC, the lower limit -l0ºC, Note: Allow storage and transportation at -25ºC
2. Altitude not more than 1000m
3. Relative humidity: daily average is not more than 95%, monthly average is not more than 90%
4. Water vapor pressure: the daily average is not more than 2.2 × 10-3Mpa, the monthly average is not more than 1.8 × 10-3Mpa
5. The surrounding air should be free from corrosive or combustible gases, water vapor and other obvious pollution.
6. No regular and violent vibration.
Note: Please consult with the manufacturer to solve the problem if it is not in line with the above conditions

Technical parameter

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