Two Windings Non-flammable Resin-sealed 1250kVA Distribution Transformer

 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.

General Technical Parameters

Rated Primary Voltage: 6kV up to 35kV

Rated Secondary Voltage: 0.4kV

Rated Capacity: 3kVA up to 2500kVA

Rated Short-time P. F. Withstand Voltage (r.m.s.) (kV): 20, 25, 35, 50, 70

Rated Lightning Impulse Withstand Voltage (Peak) (kV): 60, 75, 125, 170

Phase No.: single phase or three phases

The Highest Temperature Rise of Windings: 100K

Insulation Class: F

Cooling Mode: AN or FN

Enclosure Protection: IP00, IP20 or custom specified

Connection Symbol: Yyn0, Dyn11or I_I0 or custom specified

HV Tapping Range (%): ±5 or ±2×2.5

Main Features 

Low loss, low noise, high operation efficiency
High ability of protection against short circuit

High mechanical strength  
Pre-galvanized steel frame, flame-resistant, against corrosion

With outstanding fire-proof capability: the epoxy resin is difficult to flame and self-extinguished. So it won’t lead to the second disasters, such as an explosion.

Cast epoxy resin with high dielectric strength 18~22kV/mm in vacuum process

Superior in environmental performance: the epoxy resin is very stable, moisture-proof and dust-proof. It enables dry-type power transformers to run with high reliability under abominable environment.

With theimpeccable temperature control and indicating system, dry-type power transformers can be maintenance free. And this offers a great reduction of operation cost.

With small volume, light and convenient for installation and alignment.

No need of a separated room.

Materials

Insulation Material: epoxy resin

Winding Material: Aluminum wire or high quality enameled copper wire (foil winding is available for power transformer)

Core: core lamination, low loss, cold rolled grain oriented silicon steel

All our goods are packed in wooden cases, with foam inside for protection. And we have a team who is in charge of packing. The team consists of our skilful carpenters and experienced packing designers. These enable our packing reasonable, safe and reliable.

Our after- sales service is available anytime

a. Three guarantees will be carried out on the products delivered (18 months quality guarantee). That is refund, replacement and repair.

b. Fittings supply shall be in time.

c. Response for the financial loss brought from the uncertified or services.

d. Product sample is available.

e. Product customization is welcome. We have professional team to meet your requirements.

(GDSH)Guangdong Shui Instrument Transformer Works Co., Ltd. has been in the field of designing and manufacturing power transformers, instrument transformers and related components for more than 24 years. GDSH has two factories based in Sihui City near Guangzhou. Sihu Brand products have the full certificates as below:

·Russia GOST certification;

·China Environmental Symbol Products;

·Guangdong Provincial Energy Saving Symbol Products;

·Excellent conduct enterprise certification with AAAA-level standard; and

·Standardized safety production enterprise with second level

And GDSH pass ISO 9001:2000, ISO 9001/ISO 14001/OHSAS 18001 Quality Environmental and Occupational Health and Safety Management Systems certification.

Our production capability

Power transformers 20,000 pieces per year

Voltage transformers 80,000 pieces per year

Current transformers 100,000 pieces per year

Insulating articles 400,000 pieces per year

Quality control

We have more than 50 professional quality inspectors. There are at least 2 quality inspectors distributed at each workshop to make sure every parts of our product are qualified. What’s more, our Test workshop is always capable of stopping non-conforming products to be delivered.

There are 30-45 members in our R&D team

Our main export market is South Asia, North America, Europe and South America and so on.

Payment terms:

       30% deposit in advance and 70% balance paid before delivery or 100% L/C at sight

Minimum order:

        For high voltage products and power transformers: 1 piece;

        For medium voltage products: 3 pieces;

        For low voltage products and insulating articles: 10 pieces

Delivery time:

      Within 5~30 days after receive of order

Quotation Valid Date:

     90 days

Transportation methods:

     By air or by sea, as requested

ABB Excellent Supplier

Our company is one of the excellent suppliers for high voltage products business unit of China.

Certificate of Measurement system

Our company has satisfied the requirements of Measurement Assurance System standards.

GOST Certificate

Our products had gained the GOST certificate and can enter the Russia market.

                                   CE Certificates for current transformers