Panels distributive power boards of the ShchO-70 series
APPOINTMENT AND SCOPE
Panels of switchboards of the ShchO70 series (further panels) are intended for reception and distribution of electric energy, for protection of the departing lines at overloads and short circuits in three - phase four - wire and five - wire alternating current mains of 380 V.
STRUCTURE OF THE SYMBOL
SHCHO70 - H - HHU3
|SHCHO||Switchboard of unilateral service|
|70||Year of development|
|X||Electric firmness of combined tires (1 - 30 kA, 2 - 50 kA)|
|XX||Number of the scheme (according to table 1)|
|U1||Climatic modification and category of placement in accordance with GOST 15150 - 69.|
Nominal rate of climatic factors - in accordance with GOST 15150 - 69.
Height above sea level - no more than 2000 m.
Group of service conditions regarding influence of mechanical factors of external environment - M1 on GOST17516.1 - 90.
Panels are used in electric networks with systems of grounding in accordance with GOST of 30331.2 - 95 (MEK 364 - 3 - 93) TN - S (zero working and zero protective conductors work separately) and TN - S - C and TN - C (zero working and zero protective conductors are integrated).
Panels conform to safety requirements established to GOST P 51321.1 - 2007.
Protection against defeat by electric current - in accordance with GOST P 51321.1 - 2007 - by means of the door opened by a key.
Requirements of fire safety for GOST12.1.004 - 91.
The ShchO70 panels are classified:
- to destination: introduction, linear, section, introduction and section, introduction and linear, with the AVR equipment, with the structure of dispatching management of street lighting, face;
- on rated current;
- on electric circuits;
- according to the characteristic of input (cable, tire).
|Rated working voltage, In||380|
|Number of the departing lines, piece.||1,2,4,6|
|Rated current of introduction panels, And||400, 630, 1000, 1600, 2000|
|Rated current of the departing lines, And||100, 250, 400, 630, 1000|
|Electrodynamic firmness of combined tires and branches from them, kA,
for introduction and section panels:
|to 1000 A||30|
|to 1500 A||30, 50|
|for introduction panels on 2000 A||50|
|for linear||30, 50|
|The degree of protection provided with a cover, in accordance with GOST 14254 - 96 (from a facade - IP31)||IP00|
|The rated working voltage of chains of management, In||220|
|The rated voltage of isolation, In||690|
|Service life, years||15|