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.
| No. | Category | ||||||
| MZ-III600 | MZ-I600 | MZ-I800 | MZ-I1200 | MZ-I1500 | |||
| 1 | Maximum rated through-current (A) | 600 | 600 | 800 | 1200 | 1500 | |
| 2 | Rated frequency (Hz) | 50 | |||||
| 3 | Number of phases and connection method |
Three-phase Y connection | Single-phase arbitrary connection mode | ||||
| 4 | Maximum step voltage (V) | 3300 | |||||
| 5 | Rated step capacity (kVA) | 1500 | 1980 | 2640 | 3500 | 3500 | |
| 6 | Short circuit resistance（kA） | Thermal stability (3-second RMS value) | 8 | 8 | 16 | 24 | 24 |
| Dynamic stability (peak value) | 20 | 20 | 40 | 60 | 60 | ||
| 7 | Number of work positions | The sheave has 10, 12, 14, 16 and 18 gears. The maximum gear is 18 without a polarity selector and 35 with a polarity selector. | |||||
| 8 | Switch insulation level |
Unit (kV) | Insulation level | ||||
| 35 | 60 | 110 | 220 | ||||
| Maximum Operating Voltage | 40.5 | 72.5 | 126 | 252 | |||
| Power Frequency Test Voltage (1 min) | 85 | 140 | 230 | 460 | |||
| Impact Test Voltage (1.2/50) | 200 | 350 | 550 | 1050 | |||
