Description
Tap-changer operating conditions:
1. The installation location must be free of heavy dust, explosive gases, and corrosive gases.
2. The switch should be stored in an ambient temperature range of -25°C to 45°C.
3. The switch should be used in transformer oil, and the oil temperature should be between -25°C and 100°C.
4. When the switch is mounted on the transformer, the vertical tilt should not exceed 2%.
Key Features and Advantages:
1. High Reliability
High-quality materials and advanced manufacturing processes ensure product stability and reliability, making it less prone to failure during long-term operation.
2. Flexible Adjustment
Through tap-changing operations, the line voltage can be flexibly adjusted according to actual needs, meeting voltage regulation requirements under varying load conditions.
3. Precise Control
A sophisticated tap-changing mechanism and reliable control system ensure accurate control and stability of the tap position.
4. Safety and Reliability
Multiple safety protection devices, such as overcurrent protection and short-circuit protection, ensure safe and reliable operation.
5. High Energy Efficiency
Precisely adjusting the line voltage reduces energy consumption and losses, improving system efficiency.
| item | Classification feature | Ⅲ 600 | 1600 | 1800 | 11200 | 1500 | |||||
| 1 | Maximum rated passing current (A) | 600 | 600 | 800 | 1200 | 500 | |||||
| 2 | Rated frequency(Hz) | 50 or 60 | |||||||||
| 3 | Number of phases and connection mode | Three-phaseY connects to the center point |
Single-phase arbitrary connection mode | ||||||||
| 4 | Maximum grading voltage(V) | 3300 | |||||||||
| 5 | Rated capacity (KVA) | 1500 | 1980 | 2640 | 3100 | 3500 | |||||
| 6 | Withstand short circuit Ability(kA) |
Thermal stability(3s RMS) | 8 | 8 | 16 | 24 | 24 | ||||
| Dynamic stability | 20 | 20 | 40 | 60 | 60 | ||||||
| 7 | Number of working positions | Maximum 107 tap positions | |||||||||
| 8 | Tap off Off
insulation |
Rated voltage | 35 | 66 | 110 | 150 | 220 | ||||
| Maximum operating voltage | 40.5 | 72.5 | 126 | 170 | 252 | ||||||
| Power frequency test voltage(1min) | 85 | 140 | 230 | 325 | 460 | ||||||
| Impulse test voltage(1.2/50) | 200 | 350 | 550 | 750 | 1050 | ||||||
| 9 | Tap selector | According to the insulation level is divided into 4 sizes:number B,C,D | |||||||||
| 10 | Mechanical life | No less than 800,000 times | |||||||||
| 11 | Electrical life | No less than 200,000 times | |||||||||
| 12 | Toggle Switch Oil chamber |
Working pressure | 3×10⁴Pa | ||||||||
| Sealing performance | 6×10⁴Pa 24h no leakage | ||||||||||
| Overpressure protection | Rupture cap(4~5)×10⁴Pa | ||||||||||
| Protective relay | QJ4-25 Set oil speed 1.0m/s±10% | ||||||||||
| 13 | Oildischarge (L) | about 190~270 | |||||||||
| 14 | Oil charge (L) | about 125~190 | |||||||||
| 15 | Weight(Kg) | about 240~350 | |||||||||
| 16 | Equipped with electric mechanism | HED-200 | |||||||||
