ZW50-40.5 series outdoor high voltage vacuum circuit breaker

SUMMARY

ZW50-40.5 series outdoor high voltage vacuum circuit breaker (hereinafter referred to as "circuit breaker") for AC 40.5kV, 50Hz three-phase power system, as the sub, combined load current, overload current and short circuit current.
The circuit breaker is in line with the national standard GB1984.2003 "AC high voltage circuit breakers" and the international electrical commission standard IEC56 "high voltage AC circuit breakers" requirements.
This product should be used to meet the following environmental conditions:
A. ambient air temperature: upper limit of +40, lower -40;
B. Altitude: ≤1000m (more than 1000m, according to the corresponding altitude correction coefficient of electrical parameters);
C. wind pressure: no more than 700Pa (equivalent to the wind speed 34m/s);
D. seismic intensity: no more than 8 degrees;
E. pollution grade: III grade (anti fouling level IV).

Main innovative features

Application of all insulation sealing technology
The vacuum arc extinguishing chamber is encapsulated in the outdoor epoxy resin material by using the advanced full insulation technology,
which improves the outer insulation ability of the arc extinguishing chamber,
and makes the product more suitable for all kinds of outdoor environment.

The novel structure design, reduce the volume, remove the porcelain design bulky, reduced weight,
symmetrical appearance beautiful, good-looking.

Combined design of transformer and supporting sleeve

The lower casing and the current transformer are integrated into a whole, and the current mutual inductor is directly used as the support to the ground, which not only solves the problem of the installation of the current transformer, but also solves the problem of the post insulator.

New arc extinguishing ability

The electric field of arc quenching chamber is calculated by using the finite element method, the electric field intensity is minimum and the electric field is more uniform. Optimize the structure of the arc extinguishing chamber, and greatly improve the insulation performance and breaking capacity of the arc extinguishing chamber.

A new design concept of hidden danger without dew

With the new design concept, without casing design, the insulation problem between the casing and the arc extinguishing chamber and the transformer is eliminated fundamentally. Exclude the generation of condensation conditions, bid farewell to the filling or oil era.

Various levels of transformer selection

Equipped with a current transformer, can meet the measurement, measurement, protection, etc.. The user can choose according to the requirements of 100:5 to 2000:5 and other than the current level.

Out of porcelain design, solves the problem of fragile porcelain

Highly integrated design, the casing, support and transformer integration, improve the mechanical strength of the machine, get rid of porcelain in the transportation, installation and use of the damaged, reliability in transportation is greatly improved.