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L2275
Emax
124/132
Doc. N°
Mod.
Apparatus
Scale
Page N°
RH0109002
Notes
A) The power circuit breaker is only fitted with the applications specified in the ABB order confir mation. To make out the order, please consult the
apparatus catalogue.
B) The undervoltage release is provided for power supply branched on the supply side of the power circuit breaker or from an independent
source: power circuit breaker closing is only allowed with the trip energized (the lock on closing is made mechanically).
In the case where there is the same power supply for the closing coils and undervoltage releases and automatic power circuit breaker closing
is required, on return of the auxiliary voltage, it is necessary to introduce a delay of 30 milliseconds between the instant of consent of the
under voltage release and energisation of the closing coil. This can be carr ied out by means of a circuit outside the power circuit breaker
including a per manent closing contact, the contact indicated in figure 12 and a time-delay relay.
C) In the case of a fixed v ersion power circuit breaker with current transfor mer on the neutral conductor outside the power circuit breaker, when
the power circuit breaker is to be remo ved, it is necessar y to short circuit the terminals of the TI/N transformer.
D) Connect the S33M/2 contact indicated in fig. 11, one of the closing contacts and one of the opening contacts of the power circuit breaker
indicated in fig. 21 in the way shown in fig. 42.
E) For connection of the EIA RS485 serial line, see the following documentation:
- RH0298.002 for MODBUS communication
F) The Uaux. auxiliary voltage allows activation of all the functions of the PR112/P-A, PR112/PD-A, PR113/P-A and PR113/PD-A trip units. With
regard to this, please refer to the relative instruction manuals.
G ) Protection against ground fault is available with the PR112/P-A, PR112/PD-A, PR113/P-A and PR113/PD-A trip units by means of a current
transformer located on the conductor which connects the MV/LV transfor mer star center to ground. The connection between terminals 1 and
2 of the TI/O current transformer and the T5 and T6 poles of the X (or XV) connector, must be made using a shielded and corded two-pole
cable (see instruction manual) not longer than 15 m. The shield must be grounded on the power circuit breaker side and on the current
transformer side.
H) In the case of PR113/P-A or PR113/PD-A trip units mounted on a three-pole power circuit breaker without connection to the neutral outside,
the T3 and T4 poles of the X (or XV) connector must be short circuited (by the customer).
I) The contact cannot be used if the PR112/PD-A and PR113/PD-A unit is present.
L ) The contact cannot be used if the PR113/P-A or PR113/PD-A unit is present.
M) Connect one of the S75I contacts indicated in fig. 31 or 51 in the way shown in figs. 42-44.
In the case of fixed version power circuit breakers, connect the XV-K14 terminal directly to the XV-K16 terminal (contact S75I does not exist).
N) With PR112/P-A, PR112/PD-A, PR113/P-A and PR113/PD-A trip units, the connections to the zone selectivity inputs and outputs must be
made using a shielded and corded two-pole (see instruction manual) not longer than 300m. The shield must be grounded on the selectivity
input side.
O ) With PR113/P-A and PR113/PD-A trip units, the connection between the voltage sensors (TV) and the power circuit breaker must be made
using a shielded and corded two-pole cable (see instruction manual) not longer than 15 m.
The shield must be grounded on both sides (sensor and power circuit breaker).
P) With PR112/PD-A and PR113/PD-A tr ip units, the power supply of the YO and YC coils must not be branched from the main one.
The coils can be controlled directly from the K51/YO and K51/YC contacts with maximum voltage values of 60VDC and 240-250VAC for
PR112/PD-A, 240-250VDC and 240-250VAC for PR113/PD-A.
Q ) The second shunt trip must be installed as an alternative to the undervoltage trip.
R) The operation of the SACE SOR TEST UNIT shunt trip (YO) is guaranteed starting from 75% of the Uaux of the shunt trip.
During closing of the power supply contact to YO (short circuit of terminals 4 and 5), the SACE SOR TEST UNIT is not able to determine the
state of the opening coil.
For this reason:
- In the case of an opening coil supplied continuously, the TEST FAILED and ALARM signals will be activated.
- If the control of the opening coil is carried out impulsively, the TEST FAILED signal may be activated at the same moment. In this case , the
TEST FAILED signal should only be considered an actual alarm signal if it remains for longer than 20s.
S) Also available in the normally closed contact version.
T) Configuration valid for four-pole or three-pole power circuit breaker with external neutral. For other installation configurations, please consult
the manual.
Instructions to follow for replacement of the PR111-A, PR112/P-A, PR112/PD-A, PR113/P-A or PR113/PD-A trip units:
– Take special notice of the notes indicated on the electrical circuit diagrams provided
– The contact for electrical signaling of under voltage release energized (Fig. 12 of the enclosed diagrams) must be remo ved from the terminal
box.
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