Jlszv Outdoor Three-Phase Three-Wire High-Voltage Metering Box Dry-Type Wide-Load Combined Instrument Transformer

• Customization: Available
• Application: Electronic
• Type: Combined Transformer
• Model NO.: JLSZV-35
• Phase: Three
• Operation Condition: Outdoor
• Usage: Protection, Measurement
• Winding Form: Small Fixed Type
• Insulating Medium: Insulating Oil
• Installation: Strut Type
• Magnetic Circuit Structure: Combined Type
• Voltage Transformation Principle: Electromagnetic Type
• Coil Number: 2
• Frequency: 50/60 Hz
• Rated Capacity: 10-35kv
• Standard: ISO
• Material: Epoxy Resin
• MOQ: 1 Piece
• Transport Package: Safe and Strong Wooden Package
• Trademark: Xianghu
• Origin: Zhejiang, China
• HS Code: 8504311000
• Production Capacity: 2000 Piece/Pieces Per Month
• Package Size: 640.00cm * 295.00cm * 583.00cm
• Package Gross Weight: 100.000kg

Product Description

Product Description

Product Description
JLSZV-35 series three-phase outdoor dry-type high-voltage combined transformer (with meter is called power metering box), respectively suitable for 50Hz or 60Hz three-phase AC, rated voltage of 35kV power grid for energy measurement, and installed in the power supply transformer On the high-voltage side of the high-voltage line, the instrument box is equipped with a three-phase active watt-hour meter and a reactive watt-hour meter, or a combined active and reactive power electronic meter, which is a metering device used to directly measure active and reactive energy in high-voltage lines. It plays an important role in preventing electricity theft, saving energy and strengthening power supply management. All indicators meet the requirements of national GB20840.2-2014, 20840.1-2010, GB20840.3-2013 and enterprise Q/YCD003-2003 standards. The products have passed the inspection of the National Transformer Supervision and Inspection Center and are approved by the State Economic and Trade Co mmission to be included in the third batch Recommended products for national urban and rural power grid construction and renovation. The product can replace the oil-immersed power metering box.

Product features and scope of use
JLSZV35 series three-phase outdoor, dry-type, wide-load combined transformer (with metering box), the unit components of the product are insulated by outdoor epoxy resin casting, and the unit components are assembled into one (or split) structure, so that the product has It has the advantages of anti-ultraviolet, anti-aging, anti-rain and so on. The product can be used for single, double and triple current ratio, and the high precision of 0.2S ensures accurate measurement under wide load. Double and triple current ratios adopt a second tap structure.
Three-phase two-element power metering box (combination transformer)
The three-phase three-wire combined transformer (two-element) consists of two single-phase voltage transformers (PT) and two current transformers (CT). Both PT and CT are electromagnetic, and the two PT windings are connected by V/V. A three-phase measuring device is formed, and the primary windings of the two CTs are connected in series with phases A and C of the grid respectively. There is a ground screw welded on the bottom mounting bracket.
Three-phase three-element power metering box (combination transformer)
Three-phase three-element power metering box (combined transformer) Y/Y 0 connection metering box is a new generation product improved on the basis of three-phase two-element VV connection, because with the continuous development of today's society, the power grid The load situation is also constantly developing and changing, for example: single-phase rectification of electrified railways, electric furnace smelting, rectification and electrolysis, etc., as well as harmonics in the power grid, and the imbalance of phase loads may cause negative sequence or harmonics in the V/V connection. The measurement is inaccurate because the wave has no channel (according to the actual measurement, the Y/Y 0 connection method can increase the income by 3%-15%), so our factory has newly developed the Y/Y 0 connection method of the metering box to adapt to the complex operating conditions. It can ensure accurate measurement and cooperate with the current reform of electric energy management. The metering box has the characteristics of flexible measurement. For example, the single-phase watt-hour meter can monitor the operation of each phase load so as to find problems in time. If the load changes greatly, please use the S-class (measurement range from 1%-120% of the rated current) current transformer to be used in conjunction with the 1.5A-6A wide-load watt-hour meter, so as to avoid the trouble of changing the ratio frequently. .
The instrument box is connected with the secondary winding outlet of the combined transformer. The instrument box is equipped with a three-phase active watt-hour meter and a reactive watt-hour meter each, or a three-phase active and reactive combined energy meter, which can be clearly seen from the observation window box. 
(1) JLSZV-35 series combined transformers are assembled from dry single components, and there is no oil leakage problem, so oil-free is realized;
(2) The voltage and current are all cast with resin, like a building block structure, which is easy to replace, easy to maintain, and saves costs;
(3) The product has high precision, and the current transformer can reach 0.2S level, which realizes wide load measurement;
(4) The use of materials makes the product have high dynamic and thermal stability;
(5) The voltage part can be equipped with a 220V auxiliary winding to provide power for switches, etc.
Conditions of Use:
1. The ambient temperature is between -45°C and 40°C, not exceeding the daily average temperature of 35°C;
2. The altitude does not exceed 1000 meters (please provide the altitude when using in high altitude areas);
3. Wind speed: ≤34m/s;
4. Relative humidity: the daily average is not more than 95%, and the monthly average is not more than 90%;
5. Shock resistance: horizontal acceleration 0.25g, vertical acceleration 0.125g;
6. This product can run for a long time at 1.2 times the rated voltage factor;
7. Device category: outdoor composite insulation fully enclosed structure;
8. Product weight: 485Kg (including arrester weight);
9. Surface creepage distance: 1300mm;
10. Rated insulation level: 40.5/95/200 kv

 

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