Power box introduction from automatic transfer (SHVA)

Power box introduction with function of automatic closing of a backup supply of a type of automatic transfer are intended for reduction of a supply of using equipments of 1st class by automatic joining of backup energy sources instead of the workers who have gained a fault, wrongly turned out etc.

Power box can be carried out as the independent module, and together with the distribution case. And, at small currents and a paucity of removing lines Power box of automatic transfer and distributive can be combined.

 Structure of the conditional indication

SHVA-XX-X-XXXX-XX-XX 123451

Power box introduction with function of automatic closing of a backup supply of a type of automatic transfer are intended for reduction of a supply of using equipments of 1st class by automatic joining of backup energy sources instead of the workers who have gained a fault, wrongly turned out etc.

Power box can be carried out as the independent module, and together with the distribution case. And, at small currents and a paucity of removing lines Power box of automatic transfer and distributive can be combined.

Structure of the conditional indication SHVA-XX-X-XXXX-XX-XX 123451

Type of the scheme:

10-two three-phase feedings into.

The control: a breakup of one of phases, a voltage reduction, a sag, a phase rotation;

20-two three-phase feedings into and feeding into from the disel power plant.

The control: – a breakup of one of phases, a voltage reduction, a sag, a phase rotation;

30 – two three-phase feedings into, the busbar sectionalizing switch.

The control: – a breakup of one of phases, a voltage reduction, a sag, a phase rotation;

40 – two three-phase feedings into, feeding into from the disel power plant, the busbar sectionalizing switch.

The control: – a breakup of one of phases, a voltage reduction, a sag, a phase rotation;

2. The letter which is marking out a type of the switch apparatus:

AND – an automatic cutout electrically driven; To – the contactor.

3. Rated current power box: from 10 A to 630 A for automatic transfer on automatic tripping contactors; from 16 And to 2500 And for automatic transfer on automatic cutouts electrically driven.

4. Protection extent shells on GOST 14254-80 30 І Р 30, 54-IP 54.5.

The Climatic modification and a disposing class in accordance with GOST 15150-69, GOST 155431-89. Grading of boards automatic transfer Cases automatic transfer classify: to quantity of feedings into; on rated current; on presence of auxiliary modules (the account, control and measuring, distribution and so forth); on a way of installation (low-ground, hinged); on extent of protection of a shell and so forth Technical characteristics Nominal voltage 380/220 In, frequency of 50 Hz; Rated current to 2500 A.

Operating conditions: a height above sea level – to 2000 m; a circumambient – not explosion-hazard, not containing a currentconducting dust, aggressive corrosive gases and vapours in the concentrations blasting metal and isolation (insulation); an ambient temperature working value at maintenance – from “-5 °С” to “+40°С”; relative humidity of ambient air – no more than  98 % at temperature 25 °С. Nominal a board mode of operation: the long. Extent of protection of a shell at shut door IP 30, IP 54, for boards of low-ground modification from bottom IP 00 in accordance with GOST 14254-80. Safety requirements match GOST 12.2.007.0-75, GOST 22789-94, GOST 12 and to demands “PUE”.

Construction

The power part of the device of automatic transfer is completed on the basis of the equipment made by firms “GENERAL ELECTRIC”, “SES”, ”MOELLER”, “SIEMENS”, “TELEMECANIQUE”, “SCHNEIDER” or other firms at will of the customer.

The board instrumentation takes places on an assembling panel or the precast cradle (for Power box of low-ground modification. On a case door elements of indication and automatic transfer running are fixed. The minimum standard indication – voltage presence on feedings into №1 and №2.

The automatic transfer board mechanically can consist of one or more Power box depending on a scheme type and board rated current.

Modes of operation and automatic transfer runnings are matched with the customer.

The automatic transfer board can contain the additional modules fixed on demand the customer: the module of the account of electric energy (active, reactive) control and measuring

The module the additional equipment (on request of the customer)

the Construction and a overall dimension of a board of automatic transfer is defined depending on a circuit scheme type.

By the form installations boards can be fabricated hinged (to In =160) or low-ground modification. The board construction provides input and output of powering and departing lines both from above, and from below.

Possible fabrication body shield with self-controlling heating (in consultation with the customer).

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