|
TWA25A |
TWA40D |
Six-winding resistance measurement |
no |
yes |
DC test current |
5 mA – 25 A |
5 mA – 25 A; up to 25 A for winding resistance measurement and up to 40 A for the 3-phase synchronization test |
Measurement accuracy |
± (0,1 % rdg + 0,1 % FS) |
± (0,1 % rdg + 0,1 % FS) |
Simultaneous 3-phase winding resistance measurement |
no |
yes |
DVtest sampling resolution |
4 ms |
0.1 ms |
Simultaneous 3-phase DVtest |
no |
yes |
Tap changer motor current measurement |
no |
yes |
3-phase demagnetization |
yes |
yes |
Interchangeable test leads with TRT turns ratio testers |
yes |
yes |
USB flash drive feature |
yes |
yes |
Built-in tap changer control unit |
yes |
yes |