APC Silcon DP320E delta conversion UPS teardown

Our APC Silcon UPS started going doolally. It's officially end-of-life, the batteries are end-of-life, the capacitors are overdue for replacement and we no longer need a UPS of this size in what is no longer a server room, so we've decided to scrap it.

Despite still supplying power normally it appears that the delta inverter had blown one of its six driver circuits, I only spotted that after editing the video. Look at the bulging cap and burnt out resistors at 13:19.

Delta conversion documentation: http://www.apc.com/prod_docs/results....

Prices below are spare part prices found online.

INDEX
0:00 Index
0:10 Introduction: a faulty, end-of-life APC Silcon DP320E UPS
0:51 Entering bypass mode and shutting down the system
3:50 Pulling the batteries and a look around inside before gutting it
5:32 Delta conversion overview
6:11 Delta transformer
8:09 Input and output boards (W0P0040, $501.99 and W0P0041, $390.99)
9:00 Inverter module (W0C0007, $6548.99)
9:50 Main inverter power board & IGBTs (W0P0042, $1159.99)
10:51 DC capacitor bank
11:26 Main inverter driver board ($400.99)
12:55 Delta inverter board and IGBT ($478.99)
13:58 A big capsule thyristor and clamp assembly
16:53 Capacitor bank pre-charging resistors ($129.99)
17:38 Big chokes (W0G0901803, $2297.99)
18:13 Bypass and anti-backfeed contactors
19:37 Current monitoring board
20:00 Static bypass PSU/driver board (W0C0012, $3787.99)
21:08 Static bypass power board ($40.99)
21:27 Battery input board (W0P0052, $2331.99)
22:59 Cooling fan (W0G0901153, $638.99)
23:17 Main control board (W0P0067, $2432.99)
24:54 Parallel UPS communication board (WOP0057, $772.99)
26:07 Control board PSU
26:49 Communication board ($417.99)
28:05 External battery/bypass/REPO monitoring board ($239.99)
29:03 Front panel ($1178.99)

Видео APC Silcon DP320E delta conversion UPS teardown канала AintBigAintClever