Medium Voltage Packaged Unit Substations
Flexible, modular systems
Flexible, prefabricated substations specially designed to meet your needs
JST’s medium voltage packaged unit substations offer all the benefits of a standard substation without the need of a full civil-designed building. Our prefabricated unit substations (also known as e-houses) provide comprehensive coverage from medium to low-voltage requirements and include essential components such as transformers, switchgear, protection technology, measuring systems and monitoring capabilities.
Our packaged substations include fully functional HV/LV switching, control and protection, metering, reactor compensation and more. With the added advantages of small substation footprint, flexibility to move and relocate, low capital investment, unobtrusive and attractive appearance – our packaged substations are designed for use in high-rise buildings, residential districts, commercial and municipal facilities, industrial and mining enterprises, oilfields, ports, airports, construction sites, roads, solar and wind farms and more. Our solutions are custom built and optimized to perform in both indoor and outdoor environments.
JST Solution Advantages
MODULAR, CUSTOM DESIGN WITH SMALLER FOOTPRINT THAN TRADITIONAL SUBSTATIONS
25% COST SAVINGS COMPARED TO TRADITIONAL SUBSTATIONS
OPTIMAL PERFORMANCE FOR INDOOR OR OUTDOOR USE
Skid & Container Solutions
The YB-series medium voltage substation is a prefabricated housing containing HV/LV switchgear, distribution transformer, metering devices for electric energy and compensation devices for power factor, etc. It serves as a complete set of power distribution and transformation unit in the power distribution and transformation grid with a rated frequency of 50Hz/60Hz. With a maximum temperature of +40°C and a minimum temperature range from -10°C to -25°C, these enclosures are rated for outdoor use and suited for standard and seismic applications.
Transportation, Installation & Maintenance
Easy to handle and transport, our packaged solutions come with standardized interfaces, such as ISO-container corners, for quick and simple fastening, lifting and rigging. Our solutions are designed to meet international transport requirements and do not require oversize transport. Per the requirement of the installation instruction and relevant provisions, all electrical equipment contained inside the housing must be checked and maintained regularly to preserve product integrity and optimum operability.
Technical Specifications
|
MV Equipment |
Description | Unit | Parameters | |||
| Rated voltage | kV | 7.2 | 15 | 27 | 38 | |
| Rated frequency | Hz | 50/60 | ||||
| Rated current of main circuit | A | 630 | 1250 | |||
| Rated short-time withstand of the main circuit | kA | 20 | ||||
| Rated peak withstand current of the main circuit | kA | 50 | ||||
| Rated short-circuit duration | S | 3 | ||||
| Power-frequency withstand voltage, interphase, ground-to-ground and ordinary fracture/isolating fracture | kV | 32/36 | 43/49 | 95/110 | ||
| Lightning impulse withstand voltage, interphase, ground-to-ground and ordinary fracture/isolating fracture | kV | 60/70 | 5/85 | 185/215 | ||
| LV Equipment | Rated Voltage | kV | Less than or equal to 1 | |||
| Rated current of main circuit | A | 10 – 4000 | ||||
| Rated short-time withstand current | kV | 15 | 30 | 50 | ||
| Rated peak withstand current | kV | 30 | 63 | 105 | ||
| Rated current of branch circuits and number of circuit | Line A | Customized | ||||
| Reactive compensation capacity | kVAR | 0 ——– 30% | ||||
| Transformer | Rated capacity | kVA | 50 ——– 5000 | |||
| Rated voltage on the primary | kV | 3 ——– 35 | ||||
| Rated voltage on the secondary side | kV | Less than or equal to 1 (except for power transformation) | ||||
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