ABB VM1 Installation And Service Instructions Manual page 29

– reclosing function according to the ANSI standards (ANSI
RECLOSE)
– watchdog (DN)
– limitation of the feeder connection current
– serial RS232 for local connection (only to be used by ABB
personnel).
n.b. Some of the control module functions can be excluded/set by means
of special dip-switches on the card. Changing the dip-switch settings
must always be carried out with the control module de-energised and
capacitor/s discharged, both for safety of personnel and because the
adjustments set are only detected by the control electronics when it is
turned on.
2 Circuit-breaker auxiliary contacts
It is possible to have electrical signalling of circuit-breaker
open/closed by means of make and break contacts. The
following configurations are available.
For Fixed circuit-breaker (-BB1; -BB2; -BB3; -BB8)
2a Set of 5 make contacts plus 5 break contacts
2b Set of 10 make contacts plus 10 break contacts
For withdrawable circuit-breaker (-BB1; -BB2)
2C Set of 5 break contacts plus 5 make contacts.
Characteristics
Un:
Rated current:
Insulation voltage:
Electrical resistance:
Rated current and breaking capacity in category AC11 and DC11:
Un Cosϕ
220 V ~ 0.7
24 V – --
60 V – --
110 V – --
220 V – --
24 ... 250 V a.c.-d.c.
Ith = 10 A
2
2500 V 50 Hz (for 1 min)
3 mOhm
T In Icu
-- 2.5 A 25 A
15 ms 10 A 12 A
15 ms 6 A 8 A
15 ms 4 A 5 A
15 ms 1 A 2 A
3 transmitted contacts in the truck (-bt1; -bt2)
Transmitted contacts of the withdrawable circuit-breaker
(installed in the circuit-breaker truck - only for withdrawable
circuit-breaker for UniGear ZS1 switchgear and for
PowerCube enclosure).
These contacts are either in addition or as an alternative to
the position contacts (for signalling circuit-breaker racked-
out) located in the unit. They also carry out the function of the
position contact (-BT3).
4 Position contact (-bt3)
The position contact (-BT3) is used, together with binary input
SL1, to prevent remote circuit-breaker closing during traverse
into the unit. It is only supplied for the withdrawable version
circuit-breaker when the transmitted contacts in the truck are
not requested (-BT1; -BT2).
5 Motorised truck (-Mt) (only for withdrawable version
circuit-breaker for unigear switchgear)
This allows the circuit-breaker to be racked-in/out of the
switchgear remotely.
Characteristics
Un:
Operating limits:
Rated power (Pn):
6 device for rapidly discharging the capacitor/s
Before accessing the circuits present in the control box,
it is compulsory to make sure that the capacitor/s is/are
discharged.
Even when there is no auxiliary power supply, more than ten
minutes are needed to completely discharge the capacitor/s.
The rapid discharing device allows the waiting time to be
reduced to one minute and guarantees safe access to the
circuits which might be live.
110 - 220 V–
85 ... 110% Un
40 W
27