Pre-installed Transformer Substation

Pre-installed Transformer Substation description AC metal closed type shift switch cabinet is a three-phase AC 50HZ indoor device metal-enclosed switchgear, used in power plants and substation systems with a rated voltage of 35kV, a rated maximum current of 2000A, and a single bus or section...

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Description

Pre-installed Transformer Substation description

AC metal closed type shift switch cabinet is a three-phase AC 50HZ indoor device metal-enclosed switchgear, used in power plants and substation systems with a rated voltage of 35kV, a rated maximum current of 2000A, and a single bus or section with a maximum voltage of not more than 40.5kV Busbar sets of power distribution equipment.

The switchgear meets the requirements of DL/t404-91, IEC298, GB3906 and other standards, and has the functions of preventing misoperation of the circuit breaker, pushing the trolley with load, grounding wire, power transmission with grounding wire and accidental charging. Interval (called "five preventive measures").

Box-type substations are suitable for residential areas, urban public transformers, prosperous urban areas, and building electricity. Users can choose box type changes according to the conditions of use and load level. Since the advent of the box-type substation, it has developed rapidly. In developed countries, 70% of distribution transformers have been developed, while the United States has accounted for 90%. The rapid development of China's urban modernization and the transformation of urban distribution networks will be widely used.

Box-type substations are used in high-rise residential buildings, luxury villas, square parks, residential areas, small and medium-sized factories, mines, oil fields and temporary buildings to receive and distribute electricity in the power distribution system.

Pre-installed Transformer Substation

Intelligent Box Type Substation

Box Type Power Distribution Substation

Main technical parameters
HV unit	Rated frequency	Hz	50
	Rated voltage	kV	7.2 12 24 40.5
	Rated current of main bus	A	630 1250 1600
	Rated short-time withstand current / duration	kA/s	20/4 25/3 31.5/4
	Rated peak withstand current	kA	50 63 80
	1min power frequency withstand voltage (to-ground/between open contacts)	kV	32/36 42/48 65/79 95/115
	Lightning impulse withstand voltage (to-ground/between open contacts)	kV	60/70 75/85 125/145 185/215
	Rated short-circuit breaking current	kA	20 25 31.5
	Ground loop short-time withstand current / duration	kA/s	20/2 20/4
	Rated short-circuit making current of main loop	kA	50 63 80
	Rated active load breaking current	A	630
	Rated closed loop breaking current	A	630
	Rated transfer current	A	1700
	Mechanical life peroid	times	3000 5000 10000
LV unit	Rated frequency	Hz	50
	Rated voltage	kV	0.4/0.23
	Rated insulation voltage	V	690
	Rated current of main loop	A	100~3200
	Rated short-time withstand current	kA/s	30/1 50/1 100/1
	Rated peak withstand current	kA	63 105 176
	5s power frequency withstand voltage	kV	2.5 3.75
Transformer unit	Rated frequency	Hz	50
	Rated voltage	kV	7.2 12 24 40.5/0.4
	Rated capacity	kVA	30~1600
	1min power frequency withstand voltage	kV	25/20 35/28 55/50 85/75
	Lightning impulse withstand voltage	kV	60 75 125 170
	Impedance voltage	％	4~6
	Tapping range	...	±×2.5％ ±×5％
	Connection group	...	Y，yn0 D,yn11
	Type	...	Oil-immersed type, dry type
Cabinet body	IP code of HV and LV chambers	...	IP33D
	IP code of transformer chamber	...	IP23D
	Sound level (oil-immersed type/dry type)	dB	≤50/55