Audited Supplier
Henan Energy Electric Equipment Co., Ltd. was established in 2011 and is an excellent and reliable power equipment manufacturer in China. The company mainly develops and produces oil-immersed transformers, dry-type transformers, box-type substations, high-voltage switches, and medium and low voltage complete sets of equipment. The equipment put into production and operation of the project advocates energy saving, intelligence, informatization, and mechanization. The company has established the Henan Triangle Energy-saving Transformer Engineering Technology Research Center, with 71 utility model patents and 15 invention patents. With years of accumulation in the transformer industry and strong technological innovation capabilities, HZEC products are sold to the Middle East, North America, South America, Europe, Southeast Asia, Africa, and other regions, covering more than 40 countries.
Standards:
IEC 61869-1; IEC 61869-4
GB 20840.1; GB 20840.4
1.The three phases and three wires metering box is made up of two single voltage transformers and one current transformer.
Three phases and four wires metering box is made up of three single voltage transformers and one current transformer.
2. The primary and secondary windingare surrounded on Chinese character "Sun" structure iron core's columns.The primary terminal of current and voltage transformer are led through conducting rod from porcelain bushing for wiring.The insulation consists of high voltagecable paper, telephone paper and cardboard ete., immersed in transformer oil after desiccating under vacuum. It has advantages of stable and reliable performance of insulation, rich operated experience, long service life and convenient maintenance.
3. Perfect fluidity performance of transformer oil is good for heat dissipation,it also has self recovering ability for the failure of partial discharge caused by air bubble and dust.
4.Hermetically sealed stainless steelmetallic bellows is installed on the top,which protect transformer oil from moisture and extend the life time,also there is a oil level gauge on the bellows for observing change of oil volume for product 33 and 35kv.
5. There is a multi function oil drain valve on the base, which make it more convenient for oil sampling,draining and refilling.
6. All adopted insulation parts are environmental protection materials.
7. Secondary terminal board is made of epoxy casting, the seal performance is more reliable.
8. The base uses spray painting or hot galvanizing, which gives a high degree of corrosion resistance.
9. Fasteners and nameplate are stainless steel.
| Rated voltage, kV | 20 or 22 | 33 | 35 |
| Highest voltage for equipment, kV | 24 | 36 | 40.5 |
| Rated freguency | 50 or 60 | ||
| Rated secondary voltage, kV | 0.115/0.11/0.1 | ||
| Voltage transformer accuracy and rated output | Secondary terminal marking | a-b-c | |
| Accuracy class | 0.2 | ||
| Rated output,VA | 25 | ||
Current transformer accuracy and rated output | Secondary terminal marking | asl-as2,bsl-bs2,csl-cs2 | |
| Accuracy class | 0.2S | ||
| Rated output,VA | 20 | ||
| Thermal limiting output,VA | 500 | ||
| Rated voltage factor | 1.2 times continuous | ||
| External insulation creepage distance,mm | W1:480 W2:500 W3:745 | W1:720 W2:900 W3:1120 | W1:810 W2:1020 W3:1260 |
| Power frequency withstand voltage on primary windings,kV | 50/65 | 70 | 80/95 |
| Rated lightning impulse withstand voltage,kV | 125 | 170 | 185/200 |
| Mechanical strength(three direction),N | 1250 | ||
| No. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Name | Bellows | Oil level gauge | Primary terminal | Porcelain bushing | Terminal box | Tank | Lifting | Rating plate | Oil drain valve | M12 Earthing bolt |
| Type | H | h | Oil Wt (kg) | Product Wt (kg) | Installation dimension |
| Two components | 1335 | 945 | 65 | 355 | 550X450 |
| Three components | 1500 | 1200 | 75 | 385 | 550X450 |
1. Ambient temperature:-50ºC- +45ºC
2. Altitude:≤2000m(If above 2000m,the product will be customized according to user's request)
3. Pollution level: II, III, IV.
