The resin insulated dry-type power transformer with on-load tap changer produced by ZHEJIANG ROOQ ELECTRIC CO.,LTD., has the characteristics of low loss, low noise, low temperature rise, low partial discharge, excellent short-term over-load capacity showed on the nameplate , and strong short-circuit ability.
1. In addition to the advantages of SC(B) products, this product adopts a vacuum on-load adjustment switch, with voltage adjustment sensitivity and stable output.
2. When the grid voltage fluctuates, in order to provide high-quality stabilized electrical appliances, the voltage of the transformer must be adjusted.
3. The integrated design of on-load tapping transformer has compact structure, small floor space and easy installation.
4. The on-load tap-changer adopts a dry vacuum box structure, which is composed of an electric mechanism, a vacuum switch with transition resistance and a tap selector.
5. Automatic power distribution controller for on-load tap changer, which is convenient for on-site or remote control, and can provide computer interface as needed.
11kV series Dry type transformer with on load tap changer
Rated Capacity | Rated Voltage （KV） | Vector Group | Loss(kW) | No-load Current | Short-Circuit Impedance | Insulation Level | Total Weight（kg） | |||
High voltage (KV) | High voltage tapping range | Low voltage (KV) | No-load Losses | Load Losses | ||||||
315 | 6 | ±4×2.5 | 0.4 | Dyn11, Yyn0 | 990 | 3610 | 1.1 | 4 | F/F | 1820 |
400 | 1120 | 4270 | 1.1 | 2050 | ||||||
500 | 1290 | 5220 | 1.1 | 2320 | ||||||
630 | 1490 | 6170 | 1 | 2550 | ||||||
630 | 1440 | 6360 | 1 | 6 | ||||||
800 | 1710 | 7500 | 1 | 2940 | ||||||
1000 | 1980 | 8780 | 0.85 | 3650 | ||||||
1250 | 2340 | 10400 | 0.85 | 3820 | ||||||
1600 | 2720 | 12400 | 0.85 | 4680 | ||||||
2000 | 3420 | 15200 | 0.7 | 5470 | ||||||
2500 | 3960 | 18100 | 0.7 | 6120 | ||||||
33kV series Dry type transformer with on load tap changer
Rated Capacity | Rated Voltage （KV） | Vector Group | Loss(kW) | No-load Current | Short-Circuit Impedance | Total Weight（kg） | |||
High voltage (KV) | High voltage tapping range | Low voltage (KV) | No-load Losses | Load Losses | |||||
2000 | 30 | ±4×2.5 | 6 | Dyn11 | 4.5 | 19 | 0.75 | 7 | 7400 |
2500 | 6.3 | Yyn0 | 5.22 | 22.6 | 0.75 | 8100 | |||
3150 | 10 | 6.3 | 25.4 | 0.7 | 8 | 9000 | |||
4000 | 10.5 | 7.38 | 30.4 | 0.7 | 9900 | ||||
5000 | 11 | 8.73 | 36.1 | 0.6 | 10700 | ||||
6300 | 10.3 | 41.5 | 0.6 | 11600 | |||||
8000 | 11.8 | 47.5 | 0.5 | 9 | 12700 | ||||
10000 | 13.5 | 57.1 | 0.5 | 14600 | |||||
12500 | 16.4 | 66.5 | 0.4 | 15500 | |||||
16000 | 20.2 | 78.2 | 0.4 | 17600 | |||||
20000 | 23.8 | 88 | 0.35 | 10 | 20700 | ||||
25000 | 28.1 | 104 | 0.35 | 21300 | |||||
