Prefabricated Electrical Substation Box 4000A Rated Current For Power Distribution
Overview
Applications
Step-up substation is designed as box type and specially for new energy generation industry, which can adjust the low voltage from inverter station to high voltage and then run in power grid. So a box-type inverter station and a step-up station can be integrated into one power generation station. It’s widely applied in Solar Energy Power Plant, Wind Energy Power Plant and Nuclear Power Plant, etc.
WHY Hengfengyou
1. +20 years experience R&D team, derived from a 60 years of history transformer manufacturer in Changsha, Hunan, China since 1956.
2. Full range of transformer types with customized functions are available.
3. CE & ISO14001 ISO9001 certificated.
Tests
Below are the tests conducted by Varelen before delivery. Other tests required by clients can also be done accordingly.
Insulation resistance
Resistance of all windings
Check voltage ratio and vector group
No-load test at rated frequency and rated voltage
Impedance test
Withstand voltage test
Induced over-voltage withstand test
Partial discharge measurement
Product Features
1. Intelligient control, integrated with enclosure, compact structure and high environmental adaptability for outdoor applications.
2. The three-limb iron core is made of oblique cut Grain-oriented, seven-step silicon steel laminations insulated on both sides, guaranteeing low losses and low noise. These values are even improved by laser treatment. It is protected on the surface with a flash-proof varnish in order to prevent the sheet from corrosion and to reduce the noise.
3. Clamping frame: it is processed by CNC cutting, bending and then one-time punch forming, the hole’s size is accurate and the appearance looks delicate.
4. The winding coil is made of oxygen-free copper, class H for main insulation materials and coil is insulated by NOMEX paper of DUPONT brand, LV winding is isolated by copper foils. All these make the heat-resistant is up to 220℃, with excellent overload capacity and low loss, but high efficiency.
5. Varelen practices strictly exclusive casting system of F(155℃) or H(180℃), and the epoxy resin is injected and casted in the vacuum machine, so it’s highly insulated, dust-proof and moisture-proof, which ensures stable and reliable performance.
Parameters
Rated
power
(KVA) | High
Voltage
(KV) | H.VTap
range | Low
Voltage
(kV) | Connection
Symbol | Short-Circuit
Impedance
(%) | No-load
Loss
(W) | On-Load
LoSS
(W) | No-load
Current
(%6) | Insulation
Class |
SC(B)
9 | SC(B)
10 | SC
(B) | SC
(B)
10 |
| 30 | 6
6.3
10
10.5
11 | +5%
OR
+2x2.5% | 0.4 | Yyn0
Dyn11 | 4 | 220 | 190 | 750 | 710 | 2.3 | F |
| 50 | 310 | 270 | 1060 | 1000 | 2.2 |
| 80 | 420 | 370 | 1460 | 1380 | 1.7 |
| 100 | 450 | 400 | 1670 | 1570 | 1.7 |
| 125 | 530 | 470 | 1960 | 1850 | 1.5 |
| 160 | 610 | 540| | 2250 | 2130 | 1.5 |
| 200 | 700 | 620 | 2680 | 2530 | 1.3 |
| 250 | 810 | 720 | 2920 | 2760 | 1.3 |
| 315 | 990 | 880 | 3670 | 3470 | 1.1 |
| 400 | 1100 | 980 | 4220 | 3990 | 1.1 |
| 500 | 1310 | 1160| | 5170| | 4880 | 1.1 |
| 630 | 1510 | 1340 | 6220 | 5880 | 0.9 |
| 630 | 6 | 1460 | 1300| | 6310 | 5960 | 0.9 |
| 800 | 1710 | 1520| | 7360 | 6960 | 0.9 |
| 1000 | 1990 | 1770 | 8610 | 8130 | 0.9 |
| 1250 | 2350 | 2090 | 10260 | 9690 | 0.9 |
| 1600 | 2760 | 2450 | 12400 | 11730 | 0.9 |
| 2000 | 3400 | 3050 | 15300 | 14450 | 0.7 |
| 2500 | 4000 | 3600 | 18180 | 17170 | 0.7 |
Product composition
NITIZED SUB STATION CONFIGURATION COMPONENTS
HV Compartment
Extendible & Non Extensible MV Switchgear – Ring Main Unit (RMU)
Vacuum / SF6 Circuit Breaker, RMU & HV Fuse.
RMU & Load Break Switch.
Protection & Metering Devices.
Current & Potential Transformer for Metering / Protection.
Transformer Compartment
Oil Immersed Transformer /
Dry Type Transformer (VPI)
LV Compartment
LV Distribution Board
LT Control Panel with Incomer ACB & Outgoing MCCB
APFC Panel
LV Switch fuse unit
Instrumentation and Metering
Illumination
Internal Lightning & Door Limit Switches, Tailor made enclosures mounted on the transformer under base to provide single lift complete
installation with theft proof design.
Applications
USS (Unitized Sub Stations) / Package Sub Station are ideally suited for new residential and commercial complexes as it can be placed on Ground, partially or totally below / above ground level. Mainly used by Power Utilities, Multiplexes, Hotels, Hospitals, Shopping Malls, Software Parks, Residential Complex, Airport etc.
Service Centre
The shell of the box is made of aluminum-coated zinc steel plate and container manufacturing technology, and the design is beautiful. On the premise of ensuring the reliability of power supply, the shell color of the box-type substation is selected, so that it is easy to be in harmony with the surrounding environment Especially suitable for urban construction.
Such as: Urban residential areas, stations, ports, airports, parks, green belt and other densely populated areas, it can be used as a fixed substation, can also be used as a mobile substation, with decorative and beautifying the environment.
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step-up distribution transformer substation package substation Images
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