Rated voltage of 220kV High Voltage Fire-proof and Explosion-proof Dry-type Current Transformers

Product Name:  Rated voltage of 220kV High Voltage Fire-proof and Explosion-proof Dry-type Current Transformers

1. Application:

Guangdong Sihui instrument current transformers are widely used in commercial, industrial and residential areas. They are for current measuring and protection, delivering high accuracy in current metering. Our current transformers are having a wide range, including epoxy resin medium voltage current transformers, epoxy resin Low voltage current transformers, oil immerged current transformers, dry-type high voltage current transformers and gas SF₆ high voltage current transformers and so on.

2. Main Features

1).All outside parts, such as terminal box and mounting plate, are made of corrosion proof materials.

2). Low partial discharge

3). Matching different sizes switchgears

4). Used in current measuring and protection, high accuracy

5). Less maintenance and pollution free

6). Easily operated and mounted

7). High mechanical strength and high dielectric strength

8).For cast resin current transformers, we have: post type CTs, contact cover enclosed CTs, wall gone-thru CTs, bar type CTs, special application CTs, plateau type CTs, TAT CTs , low voltage CTs, ring type CTs , window type CTs and CTs for residual current and so on.

3. Technical Specifications

  1) Rated Primary Current: up to 8000A

  2) Rated Secondary Current: 1A or 5A

  3) Rated Primary Voltage: 0.66kV up to 1000kV

  4) Thermal Burden Value: up to 200VA or custom specified

  5) Insulation Material: epoxy resin, oil or gas SF₆

  6) Winding: high quality enameled copper wire

  7) Frequency: 50Hz or 60Hz

  8) Accuracy Class: 0.2, 0.5, 10P10, 10P, 3, 0.2S, 0.5S, PR, PX and PTS and so on

  9) Installation Place: indoor or outdoor

 10) Multi windings, up to 3 windings or more

*Except for the parameters listed above, we can design as per clients’ requirements.

4. Manufacturing Standard:  IEC 61869-2:2012, GB20840.2.

5.Technical Parameters for LGB-220W (1, 2 or 3) Current Transformers

5.1 Rated voltage 220 kV

5.2 Highest voltage for equipment 252 kV

5.3 Rated primary current 300A~4000 A

5.4 Rated secondary current 5 A or 1 A

5.5 Rated frequency 50 (60) Hz

5.6 20~50VA (If any other rated output required, We can satisfy it.)

5.7 Accuracy class and accuracy classes combination Steady accuracy classes are 0.2S, 0.2, 0.5S, 0.5, 5P, 10P, PR and PX; transient accuracy classes are TPS, TPX, TPY and TPZ. There are 1~7 pcs secondary windings in a CT.

5.8 Rated operating pressure of the gas SF6 is 0.40 MPa

5.9 Minimum operating pressure of the gas SF6 is 0.35 MPa

5.10 Instrument security factor (FS) of measuring class 5 or 10

5.11 Accuracy limit factor (ALF) of protective class 5, 10, 15, 20, 30 or 40

5.12 Rated continuous thermal current I_cth 1.2I_n

5.13 For rated short-time thermal current I_th (rms) and rated dynamic current I_dyn (peak), please see Table 1.

Table 1

5.14 Arcing Distance ≥2010 (mm)

5.15 Creepage distance of outer insulation please see Table 2

Table 2

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

Packaging and Shipping for Rated voltage of 220kV High Voltage Fire-proof and Explosion-proof Dry-type Current Transformers:

All our goods are packed in wooden cases or plywood case, 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 services for Rated voltage of 220kV High Voltage Fire-proof and Explosion-proof Dry-type Current Transformers:

I. Before Sale

a. Contact with clients nearly to know their requirements exactly.

b. Express the requirements from the clients to relevant departments in quickness and exactitude.

II. During Sale

a. Ensure that the products delivered are certified (confirming to the standards of China and IEC).

b. Ensure that marks, handle, package, storage and protection are in accordance with the requirements of ISO 9001/ISO 14001 standards.

c.Transport the products to specified destination as per the contract.

III. After Sale

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.

 Reliable manufacturer for Rated voltage of 220kV High Voltage Fire-proof and Explosion-proof Dry-type Current Transformers:

 (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 is:

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

We have a policy of continuous improvement to its product lines.

 And our substantial R & D capabilities are focused on quality and functional enhancements.

Our R&D team provides innovative products to the power grid and other electrical industries.

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

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: 5~30 days after receive of order

Quotation Valid Date: 90 days

Transportation methods: By air, by sea or by DHL or other express according to the requirements from client