Item | Specification | CZ500 | 3 x CZ500 |
1 | Number of phases | 1 phase | Any 3-phase connection |
2 | Maximum rated through current (A) | 500 |
3 | Rated frequency (Hz) | 50 or 60 |
4 | Max. rated step voltage (V) | 900 |
5 | Rated step capacity (kVA) | 250 |
6 | Short-circuit current test (kA) | Thermal (3s) | 5 |
Dynamic (Peak) | 12.5 |
7 | Max. Operating Positions | 13, in linear regulation |
8 | Insulation (kV) | To ground | Highest voltage for equipment Um | 40.5 |
Rated separate source AC withstand voltage (kV/50Hz,1min) | 85 |
Rated lightning impulse withstand voltage (kV,1.2/50μs) | 200 |
Between tap in service and pre-selected tap | Rated separate source AC withstand voltage (kV/50Hz,1min) | 5 |
Rated lightning impulse withstand voltage (kV,1.2/50μs) | 20 |
Across the tap winding | Rated separate source AC withstand voltage (kV/50Hz,1min) | 20 |
Rated lightning impulse withstand voltage (kV,1.2/50μs) | 80 |
9 | Mechanical life | Not less than 800,000 operations |
10 | Electrical life | Not less than 300,000 operations |
11 | Motor drive unit | SHM-D or CMA7 |