Prefabricated Electrical Substation Box 4000A Rated Current For Power Distribution
Features
Overview
Hengfengyou offers a wide variety of unit substation designs to meet customer requirements. A unit substation consists of one transformerelectrically connected to and coordinated in design with one or more switchgear or switchboard assemblies. A secondary unit substation is defined as a unit substation whose outgoing section is rated below 1000 volts.
A Typical Secondary Unit Substation Consists Of Three Sections:
Primary: an incoming section that accepts incoming high voltage (2400 to 13,800 volts) line
Transformer: section that transforms incoming voltage down to utilization Voltage (600 volts or less
Secondary: an outgoing section that distributes power to outgoing feeders and provides protection for these Feeders (600 volts and less)
Standard Secondary Unit Substations Consist Of
Medium Voltage Primary
Transformer
Low Voltage Secondary
Hengfengyou also offers low voltage unit substations with
Low Voltage Primary
Transformer
Low Voltage Secondary
The primary reason for using a secondary unit substation is to bring power as close as possible to the center of the loads. Another reason is that it provides a system design concept incorporating a wide variety of components that permits tailoring equipment to the needs of the application.
A secondary unit substation provides:
Reduced power losses
Better voltage regulation
Improved service continuity
Increased functional flexibility
Lower installation cost
Efficient space utilization
Every component and assembly of secondary unit substations are designed and engineered as an integral part of a complete system.
UNIT SUBSTATION LIGHTING PANEL
Lighting control system are widely use on both indoor and outdoor lighting of commercial, industrial and residential spaces lighting control system serve to provide the right amount of light where and when it is needed lighting control systems are employed to maximize the energy saving form the lighting system. This may include digital timers and photocell that are hardwired to control fixed group of lights independently.
Advantages
Reduced electrical losses as USS can be installed near load centres.
Total economy in cost.
Higher degree of safety and operational reliability is achieved by HT and LT switchgears and protective relays to avoid overloading.
Reduction in logistic cost as USS is delivered as a single unit.
Low civil / foundation cost.
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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