110kV High Voltage Gas SF6 Insulation Head Type Design Current Transformers
Negotiable /Unit
Min.Order:1 Unit
Guangdong Sihui Instrument Transformer Works Co., Ltd.
Product Name: 110kV High Voltage Gas SF6 Insulation Head Type Design 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
The current transformer is SF6 gas insulation, inverted frame, with the top of T type aluminium case which there are secondary winding(s) and primary winding(s) inside. The bushing is composite materials with silicon rubber umbrellas or high strength porcelain. The secondary terminal leads which through the metal tube are connected with the secondary terminals box which at the base. There is a pressure relief device at the top of the case, when the pressure is more than 0.8MPa if the current transformer is discharge inside, the relief device will be broken to release the pressure and send an alarm information. There is a SF6 density monitor fix at the base, it can indicate the SF6 pressure which inside the current transformer (its indicated value is the SF6 pressure at 20°C), and it will provide an information when the SF6 pressure is drop down to the minimum service pressure of the current transformer, to remind the user replenish the SF6 gas to the rated pressure.
3. Manufacturing Standard: IEC 61869-2:2012, GB20840.2.
4.Technical Parameters for LVQB-110W(1, 2 or 3) Current Transformers
4.1 Rated voltage is 110kV
4.2 Highest voltage for equipment is 126kV
4.3 Rated primary current is 100A~2500A
4.4 Rated secondary current is 5A or 1A
4.5 Rated frequency is 50Hz or 60Hz
4.6 20VA~50VA (If any other rated output required, We can satisfy it.)
4.7 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 1~8 pcs secondary windings in a CT.
4.8 Rated operating pressure of the SF6 gas is 0.40MPa
4.9 Minimun operating pressure of the SF6 gas is 0.35MPa
4.10 Instrument security factor (FS) of measuring class is 5 or 10
4.11 Accuracy limit factor (ALF) of protective class is 5, 10, 15, 20, 30 or 40
4.12 Rated continuous thermal current Icth is 1.2In
4.13 For rated short-time thermal current (r.m.s.) and rated dynamic current (peak), please see Table 1.
Primary Current (A) | 50~1600 | 2000~2500 |
Rated Short-time Thermal Current (r.m.s.) (kA), 3s | 31.5 | 40 |
Rated Dynamic Current (peak) (kA) | 79 | 125 |
4.14 System earthing conditions
Non-effectively earthed neutral system
4.15 Arcing distance is ≥1010mm
4.16 Creepage distance of outer insulation please see Table 2
Table 2
Pollution Level | Class 2 (W1) | Class 3 (W2) | Class 4 (W3) |
Creepage Distance (mm) | ≥2520 | ≥3150 | ≥3906 |
Packaging and Shipping for 110kV High Voltage Gas SF6 Insulation Head Type Design 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 110kV High Voltage Gas SF6 Insulation Head Type Design 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 110kV High Voltage Gas SF6 Insulation Head Type Design 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