30-2500kVA Cast Coil Foil Winding Power Transformer 30kVA

1. Application

1). Our power transformers are especially suitable for installation in draw-out type or fixing type switchgears as well as for power plants, substation, self-consumption transformers, power distribution, transmitter system, earthing system, community power supply system, subway, or those places where small space, fire-control, moisture-proof, are needed. Those up to 10kV can be installed in 650 ~ 1200 mm wide switchgear, up to 20kV in a 1000mm wide switchgear and 35kV in 1400 ~ 1600 mm wide switchgear.
2).Our series reactors are suitable for a power system of 6~10kV．They are connected serially with high voltage parallel capacitor group to depress a wave deformation in the system.

1. Technical Parameters

i) For Power Transformer:
1).Rated Primary Voltage: 6kV up to 35kV
2).Rated Secondary Voltage: 0.4kV
3).Rated Capacity: 3kVA up to 2500kVA
4).Rated Short-time P. F. Withstand Voltage (r.m.s.) (kV): 20, 25, 35, 50, 70
5).Rated Lightning Impulse Withstand Voltage (Peak) (kV): 60, 75, 125, 170
6).Phase No.: single phase or three phases
7).The Highest Temperature Rise of Windings: 100K
8).Insulation Class: F
9).Cooling Mode: AN or FN
10).Enclosure Protection: IP00, IP20 or custom specified
11).Connection Symbol: Yyn0, Dyn11or II0 or custom specified
12).HV Tapping Range (%): ±5 or ±2×2.5
ii) For Series Reactor
1).System Rated Voltage (kV): 3kV up to 35kV
2).Rated Capacity: up to 1200 kVar
3).Rated Current: up to 4000A
4).Rated Voltage For Capacitor (kV): 6.6√3, 7.2√3, 11√3, 12√3
5).Rated Frequency: 50Hz (60Hz on request)
6).Installation: indoor or outdoor
7).Series Reactor Number for Each Phase: 1
8).Insulation Class: F
* Except for the technical parameters list above, we can design as per clients’ requirements.

1. Main Features

1).Low partial discharge  
2).Protection against short circuit
3).High mechanical strength  
4).Pre-galvanized steel frame, flame-resistant, against corrosion
5).Long lifespan
6).Cast epoxy resin in vacuum process

1. Materials

1).Insulation Material: epoxy resin
2).Winding Material: Aluminum wire or high quality enameled copper wire (foil winding is available for power transformer)
3).Core: core lamination, low loss, cold rolled grain oriented silicon steel
5. Types of Our Reactors:
  1).Dry-type Air Core Reactors, including: Dry-type Air Core Series Reactors, Dry-type Air Core Current Limiting Reactors and Dry-type Air Core Shunt Reactors.
  2).Core-type Reactors, including: Core-type Series Reactors, Core-type Start-up Reactors, Core-type Shunt Reactors, Arc Suppression Coils, Core-type Earthing Transformer and Filter Reactors and so on.
6. Manufacturing Standard
1) Power transformer: IEC60076-11:2004, GB1094.11-2007, GB/T10228-2008
2) Series reactor: IEC60076-6:2007, GB/T 1094.6-201
7. Minimum Oder: 1 unit, delivery time: 6 days
8. Production Capability: 20,000 pieces per year.

Technical Parameters for SCB Power Transformers please see Table 1~2:

Table 1

Table 2

Notes: Detailed technical data and outline drawing are provided upon request.