
Pre-Assembled 1250kVA Compact Power Distribution 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...
Description
The company values the concept of making accurate and high-quality fixed metal enclosed switchgear, Switchgear RMU, control switchgear. We are willing to join hands with friends at home and abroad in the pursuit of excellence and create brilliance together! We have advanced production lines and testing equipment, adhering to the principle of quality first, customer first, and strive to achieve mutual benefit and win-win situation. We insist on building a brand with integrity, expanding the market with service, and promoting development with innovation. We are steadily advancing the global strategy to survive and develop, with customers all over the world.
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.



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 | |

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Customer recognition is the prerequisite for our development so that we are committed to providing customers with quality Pre-Assembled 1250kVA Compact Power Distribution Substation and satisfactory services. With the joint efforts of all staff and the support of customers, our company has developed into an enterprise with a certain scale and advanced management in China. Our products are widely used in many industrial fields.
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