COMPACT SUB-STATION
Packaged substation is a combination of the Ring Main unit, The Transformer and the Low-Voltage panel. These substations are used for effective electrical power distribution in medium voltage to low voltage distribution systems.
We Supply packaged Substation both with Dry and Oil cooled Transformer as per Customer Requirement. The Packaged Substation market was created when distribution utilities started to move from overhead to underground power lines. With cables underground, the traditional, large step-down substation (with its overhead lines) became impractical. Customers now require a compact piece of equipment that could be installed quickly with a minimum amount of site work, but still providing the same functionality as an overhead line substation. Substation enclosure design, layout, material and appearance have always been in constant development to provide continuous power in a safe and optimized way.
• PACKAGED SUBSTATION TECHNICAL SPECIFICATION GENERAL CHARACTERISTICS
General Characteristics
Ambient Temperature | -15 to 50° C | |
Color | Roof | As per Customer Requirement |
Wall | As per Customer Requirement | |
Installation | Indoor I Outdoor | |
Cooling | Natural Cooling or force cooling | |
Construction | Compartmental | |
IP Class | MV Compartment | IP-54 |
Transformer Compartment | IP-23 or As per Customer Requirement | |
LT Compartment | IP-54 | |
Applicable Standards | IEC 62271-202 | |
Enclosure Body | CR Steel/ GI Sheet/ SS sheet |
Electrical Characteristics
Rated Voltage | 12 kV |
Rated Insulation Level | 28 kV rms I 75 kVp |
Rated Frequency | 50 Hz |
Rated Current of M.V. Switchgear | 200-630 Amp |
Maximum Allowable Ith | 21kA / 3 Sec. SOkAp |
Maximum LV Current | 3333 Amp. |
SPECIAL FEATURES OF PSS
- Access to the MV & LV compartment provided through a double door arrangement.
- Louvers designed for natural ventilation and per temperature rise limit
- Adequate clearance inside the PSS
- Roof load withstand capability- 300 kG/M2
- MV & LV compartment designed – IP54, & Transformer compartment designed – IP23 (IP 34 as per customer’s Requirement)
- MV & LV internal connection are made from Aluminum/Copper Bus-bars or XLPE cable along with termination (Heat shrink Sleeve -11 kV Min.)
- Each compartment patrician are made from 3 mm CR sheet, all compartment have double door with pad lock arrangement or lock protected system, Transformer compartment have both side double door arrangement for easy access for connection and maintenance
- MV switch board facilitated with RMU (Manual) non extensible indoor type.
- LV switch board fuse protected with a main incomer along with require feeder or a compact type main Air circuit breaker or a molded case circuit breaker (by request of customer)
- Internal lighting of all compartment along with door safety lock arrangement & Heater
- LV metering system are optional
- Internal Earthing made by 60 XS -Aluminum or 25 X 2 mm Copper bus-bars