ATV6000 Cell Bypass Voltage availability

[PrashantCPatange]

In case of ATV6000, during cell bypass operation, what will be the % voltage available at the output of drive with various nos. of cell bypass condition? E.g with 1 cell bypass, 2 cell bypass, 3 cell bypass for 6.6kV & 11kV drives.

Also what will be the situation in ATV6100 for the same. (Considering only single phase cell bypass with Neutral shift design)

[PriscilaCunha22 · Accepted solution]

Hello @PrashantCPatange 

For ATV6000, we bypass all 3 phase.

For 6,6kV we have 5 power cells per phase and 11kV we have 9 power cell per phase.

Each power cell is 720V, so you can calculate the phase-neutral voltage and phase-to phase voltage.

For 6,6kV - with 1 bypass the output voltage is 80%.

For 11kV - with 1 bypass the output voltage is 88,9%.

For ATV6100, we have the "Angle Adapted Bypass" and we bypass only 1 power cell, not the 3 phase.

For 6,6kV - with 1 bypass the output voltage is 90%.

For 11kV - with 1 bypass the output voltage is 94,4%.

[TonyStark]

Hello
I wanted to confirm something of vfd atv6100

- In case of n+1 cell config, redundant cell is active or inactive in normal mode?

- How many pulse of isolation transformer in n+1 cell config? 30 pulse or 36 pulse?

Hope to hear from you soon!