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- Controller In General
- Transformer Attachment
0102030405
W (1+2) Z double-bridge span（IⅠI) de-energized tap changer
Model Meaning
For example:W(1+2)ZⅡ630/40.5-6X5 S（Y）C W model is de-energized triple-phase cylindrical middle single bridge span, rated through-current 630 A, highest voltage for equipment 40.5kV, manual (with remote gear display), side operation, 6 tap, 5 gears, horizontal installation.
Advantages
1.The appearance design is simple, the installation size is small, and the installation method is flexible;
2.Strong operation feel, reliable contact, not easy to misoperate.
3.The contact has automatic refunction.
4.Miniaturizalize transformer’s design, simplizee tap changer and transformer’s connection, the electric field distribution is uniform, flexible layout
Advice for user selection and Utilization
It is separately designed from the operation part and the body part, and the installation methods are flexible and diverse. For the selection, please combine the selection according to the required operating mechanism and the model of the body.
It is standard with lead and operated insulation rod. With special requirements, please clearly indicate in the contract and order notice. The operating insulation rod should be dried with the switch before installation and use, and can be used after drying. The lead wire is covered with insulating paper, please notice its thickness if there exists special requirements.
No △ symbol in the basic model refers to the neutral point connection method of the transformer.
Its current level should be selected with a corresponding margin, and it is recommended to reserve a 20% margin.
The selection of its voltage level shall meet the power frequency and impact requirements of main insulation and longitudinal insulation.
Please specify any special requirements
Before ordering, please request the Order Specification and electronic drawing (PDF or DWG format).
When installing the clamp tap changer, it and the transformer gripper should be fixed firmly, otherwise the its body will move down after vibration and lead to the control lever clutch.
Tap changer and transformer coil tap connection, please connect to its body on the transformer, for the radial outlet switch, is not allowed to force when the wiring tap lead root bending wire, lead bending please adopt the way of static rolling, the root insulation will bend after lead, then please users to bandage.
After it is dry, do not switch without sufficient lubrication to avoid damaging the switch.Its operating mechanism is separated from its body, and the operating mechanism of it is not dried when drying.
Its operating mechanism is equipped with mechanical limit. Do not exceed the switch limit gear to avoid damage. Please use the impact force operation when working.
During its operation or the transmission mechanism during the core inspection or field debugging, please remove the mechanism, mark before disassembly, and test the DC resistance and variable ratio to verify that the installation is correct.
Model Main Technical Specification
| Main performance parameter | insulation level（kV） | Seal function | machinery life span (Time) | Rated through-current （A） | Short-circuit capacity | |||||||
| Highest working voltage(KV) Connection method | power frequency （1min） | Impact（1.2/50μs） | Thermal stability（3s）（kA） | Dynamic stability(kA) | ||||||||
| To ground | Between phase | Between contacts Between the first and last | To ground | Between phase | Between contacts | |||||||
| 12 | （Y,△） | 45 | 45 | 20 | 100 | 100 | 70 | 0.25MPa 24h | 2000 | 250 | 5 | 12.5 |
| 40.5 | Y | 100 | 40 | 30 | 230 | 120 | 90 | 400 | 6 | 15 | ||
| △ | 100 | 100 | 30 | 230 | 230 | 90 | 630 | 7.5 | 18.75 | |||
| 72.5 | Y | 160 | 100 | 30 | 230 | 230 | 90 | 800 | 8 | 20 | ||
| △ | 160 | 160 | 45 | 350 | 350 | 150 | 1000 | 10 | 25 | |||
| 126 | Y | 230 | 140 | 45 | 550 | 350 | 150 | 1250 | 12.5 | 31.25 | ||
| △ | 230 | 230 | 55 | 550 | 550 | 175 | 1600 | 16 | 40 | |||
| 252 | 460 | * | 90 | 1050 | 285 | 2000 | 20 | 50 | ||||
Schematic Diagram
Outline Drawing
W (1+2) Z single-bredge span（IⅠI） outline install measurement drawing.
D" phase（1 phase）clamp-type installation; "L" phase（2phase）clamp-type installation.
| Typical installation measurement | Voltage （kV） | Current （A） | Gear | Outline,install measurement（mm） | Frequency/Impact（kV） | ||||||
| L | L1 | L2 | D1 | D2 | d | D3 | |||||
| W(1+2)Ⅲ250~1000/40.5-4X3~6X5 | 40.5 | 250、400、630、800、1000、1250、1600 | 3、5 | 275 | 850 | 1250 | 180 | 197 | 1.5s + package insulation thickness S is the lead cross-sectional area (mm2) | Of d2 + d + δ, δ 40~50, where the larger the δ, the more convenient the bending of the lead | Between layers and phases：100/230 |
| W(1+2) Ⅲ1250~1600/40.5-4X3~6X5 | 315 | 1500 | Between contacts：45/155 | ||||||||
| W(1+2) Ⅲ250~1000/72.5-4X3~6X5 | 72.5 | 375 | 1600 | Between layers and phases：140/325 | |||||||
| W(1+2) Ⅲ1250~1600/72.5-4X3~6X5 | Between contacts：45/155 | ||||||||||
| W(1+2) Ⅲ250~1000/126-4X3~6X5 | 126 | Between contacts：160/420 | |||||||||
| W(1+2) Ⅲ1250~1600/126-4X3~6X5 | 415 | 950 | Between contacts：45/155 | ||||||||
| W(1+2) Ⅲ250~1000/40.5-8X7 | 40.5 | 7 | 275 | 850 | 1250 | 200 | 217 | Between layers and phases：100/230 | |||
| W(1+2) Ⅲ1250~1600/40.5-8X7 | 315 | 1500 | Between contacts：45/155 | ||||||||
| W(1+2) Ⅲ250~1000/72.5-8X7 | 72.5 | 375 | 1600 | Between contacts：140/325 | |||||||
| W(1+2) Ⅲ1250~1600/72.5-8X7 | Between contacts：45/155 | ||||||||||
| W(1+2) Ⅲ250~1000/126-8X7 | 126 | Between contacts：160/420 | |||||||||
| W(1+2) Ⅲ1250~1600/126-8X7 | 415 | 950 | 220 | 237 | Between contacts：45/155 | ||||||
Outline Diagram of the Operating Mechanism
2. Manual Operation（Remote gear display） S（Y）S
3. Manual operation(SC)
4. Electric side operation（DC）
