- On-Load Tap Changer
-
D-energized tap changer
- De-energized plate tap changer all excellent
- De-energized WDT. W(1+2) linear tap changer(110KV or less) all excellent
- De-energized drum cylindrical tap changer all excellent
- De-energized manual cage tap changer
- Off circuit cage type tap changer
- De-energized linear tap changer
- Off circuit disc type tap changer
- Controller In General
- Transformer Attachment
Three-dimensional wound core transformers vacuum on-load tap-changer
Founded in 2001, Liaoning Jinli Electric Power Electrical Appliance Co., Ltd. boasts a registered capital of RMB 5 million. As a national high-tech enterprise based in China, we focus on the R&D, manufacturing and global marketing of full-series transformer tap changers.
Our company holds the title of National Intellectual Property Advantage Enterprise and operates a provincially accredited enterprise technology center to drive continuous technical innovation.
Our product footprint spans over 20 overseas markets, including South Korea, Russia, Switzerland, Australia, Thailand, India and Peru. Our core export portfolio covers 10kV to 35kV on-load tap changers, alongside off-circuit tap changers in linear, disc and plate configurations.
This tap-changer is designed for oil-immersed power transformers with an AC frequency of 50 Hz, primary rated voltage of 10 kV, rated through current up to 50 A and rated capacity no more than 630 kVA.
Mounted directly onto the transformer tank cover, this unit drastically cuts down the internal space occupied inside the transformer.
It shares the same oil compartment with the transformer. Equipped with vacuum arc-extinguishing technology, the tap-changer will not contaminate transformer oil. It addresses the drawbacks of conventional embedded tap-changers, such as bulky dimensions, separate independent oil chambers and mandatory oil replacement after long-term operation. It features outstanding safety, stable performance, zero oil contamination and maintenance-free operation.
Matched on-load voltage regulation controllers manufactured by our factory shall be adopted as the operating control unit for this tap-changer, supporting automatic, manual and wireless adjustment to deliver fully automated intelligent voltage regulation.
This product meets all technical requirements for State Grid bidding and has been incorporated into the standardized drawings of State Grid of China.
Both the main switching contacts and transition contacts of this tap-changer adopt a double-layer clip structure, which can withstand greater short-circuit current impact and fully satisfy the short-circuit withstand requirements of State Grid for distribution transformers.
Equipped with proprietary local manual operation technology, it enables tap position adjustment even when power supply is unavailable, greatly facilitating on-site operation, maintenance and fault troubleshooting.
Dual tap position indication (electrical + mechanical) is applied to eliminate inconsistency between the actual tap position of the switch and the position read by the controller caused by motor slipping, enhancing the overall safety and reliability of the tap-changer.
A fully sealed precision reduction gearbox paired with stepper motor technology prevents mechanism rusting and jamming resulting from water ingress or dampness, guaranteeing long-term stable operation of the equipment.
Dimensions：φ310mm*120mm
Rated voltage：10KV (Max.12KV)
Rated capacity：630KVA or below
Rated current：50A or below
Voltage regulation range：±4*2.5%/±4*5% （9 positions）
Arc extinguishing method：Vacuum quenching of the switching arc
Drive Type：Stepper motor（ Working voltage 110V-265V）
Protection level：IP67
Electrical life: 300000 times
Mechanical life：500000 times