| Customization: | Available |
|---|---|
| Application: | Power, Rectifier, Power Transformer |
| Phase: | Three |
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1. General
Type SYTZZ-33/200-17 is an in-tank mounting on-load tap changer, it applies resistance transition Principle. The OLTC is a selector switch type with an oil compartment to separate OLTC oil from transformer oil . there is a motor drive mechanism in the top of OLTC and the motor is controlled by Yk-2 controller . The OLTC has the advantages of simple structure and easy maintenance.
| Model | SYTZZ-33/200-17 | ||
| Rated voltage(KV) | 33 | ||
| Rated through current(A) | 200 | ||
| Rated frequency(HZ) | 50 | ||
| Maximum through current (A) | 240 | ||
| Phase number | 3 | ||
| Wiring method | End part voltage regulation | ||
| Max working position number | 17 | ||
| Maximum step voltage (V) | 600 | ||
| Insulation Level (KA) |
Insulation grade | 33 | |
| Max working voltage | 36 | ||
| Industrial test voltage 1min |
To earth | 85 | |
| Between phase | 85 | ||
| Between max. and min. | 36 | ||
| Between neighboring contact | 36 | ||
| Shocking test (1.2/50us) | 200 | ||
| Shout circuit test | Thermal stability(3S) | 4 | |
| Dynamic stability | 10 | ||
| Mechanical life | (10000 times) | Not less than 50 | |
| Electrical life | Not less than 5 | ||
| Tight test | Working pressure | 3×104 Pa | |
| Test pressure | 6×104 Pa 24h without leakage | ||
| Switch weight (without oil) | (kg) | 130 | |
| Oil weight filled | According to switch height | ||
| Drying | 105+ 5ºC | ||
| Controller fitted | YK-2 | ||
5. Operation Condition
5.1 Service ambient air temperature range of tap changer is -25ºC ~ +40ºC,Relative humidity is less then 85%.
5.2 Service temperature range of the tap changer in oil is -25ºC ~ +100ºC.
5.3 Vertical inclination of OLTC should not be over 2% when it is mounted onto the transformer.
5.4 OLTC should be operated in the place without heavy dusty and any corrosive or explosive gas.
6. Automatic Voltage Regulator
SYTZZ-33/200-17 OLTC is equipped with automatic voltage regulator YK-2. please refer to appendix for YK-2 automatic voltage regulator circuit diagram.
7. Special Design.
Special design will be provided according to the requirements of the customer. The OLTC can be equipped with temperature sensor for cold region application and a manual operation mechanism with DC power supply to YK-2 AVR for position display during installation.
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