ABB RVC Instructions D'installation Et D'utilisation page 9

Protection 3:
Over THDV (Max THDV)
If the THDV exceeds this over THDV limit set by the user, all steps are
disconnected. The reset delay time (default 40 sec) is automatically
doubled each time this event takes place.
When decreasing the THD level continuously, the protection can be
disabled. This condition is shown by a "
ALARM AND PROTECTION
RVC controller has a Normally Open (NO) type of alarm contact. This
contact activates (OPEN) when the following situation arise:
Reset (40s) blinking
Alarm cos ON
j
Overtem- ON blinking ON
perature
Overvolt- ON blinking
age
Undervolt- ON blinking
age
Over THDV ON blinking
" display on the screen.
ON
ON
ON
Alarm STEPS
relay
closed disconnected
open all connected
since more
than 6 min.
open disconnected
when T
internal >
85°C
open disconnected
open fast discon-
nection <1
network pe-
riod
open disconnected
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