22 kV 500–2000 kVA Pad-Mounted Oil-Immersed Compa | RFQ Sourcing Details

This pad-mounted compact substation is a prefabricated power-distribution assembly that combines high-voltage switchgear, an oil-immersed transformer, and low-voltage distribution equipment within one enclosure.

Its integrated arrangement is intended to reduce the space and field assembly required compared with installing the principal components separa r stated design range is 6–40.5 kV on the high-voltage side, 0.4 kV on the low-voltage side, and 50–2500 kVA.

A 50 Hz frequency and high-voltage-side rated current of 630 A are also stated. Because these ranges cover multiple possible designs, buyers should treat the final voltage ratio, capacity, current ratings, insulation levels, protection arrangement, and wiring scheme as order-specific parameters.

The assembly is factory prefabricated and designed for installation on a ground-level concrete pad. Indoor and outdoor installation are listed.

Stated service conditions include ambient temperatures from -30°C to +40°C, monthly average humidity up to 95%, daily average humidity up to 90%, and altitude not exceeding 2000 m.

The installation environment should be free from evident corrosive or flammable gas or vapor, frequent severe vibration, and inclination exceeding 5°. The enclosure is identified as steel plate, with IP33 stated in the basic product information.

A separate standard specification table lists IP23 for the high- and low-voltage compartments and IP55 for an oil-type transformer section. Buyers should therefore obtain a compartment-by-compartment ingress-protection schedule for the exact proposed unit rather than assuming one protection grade applies throughout.

The supplied information references IEC 60076 and ANSI/IEEE C57.12.00, C57.12.20, C57.12.38, and C57.12.90 as design standards. The basic information also lists ISO 9001:2000 and CCC.

The applicability and documentary status of every standard or certification should be confirmed for the selected configuration, destination, and project specification.

Before procurement, request an approved single-line diagram, general arrangement drawing, foundation and cable-entry details, complete electrical data sheet, loss and temperature-rise data, short-circuit ratings, protection and metering scope, accessory list, test plan, and nameplate schedule.

Buyers should also reconcile the listed package dimensions and gross weight with the final engineered design, since the stated 280 × 180 × 220 cm package and 6000 kg gross weight may relate to only one configuration.