Accessories; Electrical Accessories - ABB Emax E1 Installation And Service Instructions Manual

10. Accessories

10.1. Electrical accessories

Shunt opening/closing (YO/YC) and second shunt opening release (Y02)
This allows remote opening or closing control of the apparatus. Given the characteristics of the circuit-breaker operating mecha-
nism, opening (with the circuit-breaker closed) is always possible, whereas closing is only possible when the closing springs are
loaded. Most of the releases can operate with either direct or alternating current. This release carries out an instantaneous service
(*), but can be supplied permanently (**).
In uses where the shunt closing release is supplied permanently, to carry out the circuit-breaker reclosing operation after open-
ing, it is necessary to momentarily de-energize the shunt closing release (the circuit-breaker operating mechanism reclosing is,
in fact, fi tted with an antipumping device).
In some versions it is necessary to have a very high degree of safety for the remote opening control of the circuit-breaker, and,
in particular, the duplication of the control circuit of the shunt opening release is required. In order to achieve this, you can fi t the
SACE Emax circuit-breakers with a second shunt opening release. The second shunt opening release is located in the same seat
as the undervoltage release and its technical characteristics are the same as the standard shunt opening release
(*) In the case of instantaneous service, the minimum duration of the current impulse must be 100 ms.
(**) In the case of permanent power supply to the shunt opening release, you must wait for at least 30 ms before giving the opening control to the shunt closing release.
Reference fi gures in the electrical circuit diagrams: YO (4) - YC (2) - YO2 (8)
Power supply (Un)
Undervoltage release (YU)
The undervoltage release opens the circuit-breaker in the case of a considerable drop or lack of its power supply voltage. It can
be used for remote tripping (by means of normally closed type pushbuttons), as a lock on closing or to control the voltage in the
primary and secondary circuits. The release power supply is therefore branched on the supply side of the circuit-breaker or from
an independent source. Circuit-breaker closing is only allowed with the release powered (the closing lock is carried out mechani-
cally). Most releases can operate with either direct or alternating current.
Power supply (Un)
Circuit-breaker opening takes place with power supply voltage values of the release equivalent to 35 - 70% Un.
Circuit-breaker closing is possible with power supply voltage of the release equivalent to 85-110% Un.
it can be fi tted with a signalling contact for undervoltage release energized (C. aux YU)..
Reference fi gures in the electrical circuit diagrams: YU (6)
Inrush power consumption (Ps):
Continuous power (Pc):
Openting time (YU):
Insulation voltage
Model L6555
24 V DC
30 V AC/DC
48 V AC/DC
60 V AC/DC
110-120 V AC/DC
120-127 V AC/DC
220-240 V AC/DC
240-250 V AC/DC
380-400 V AC
440 V AC
24 V DC
30 V AC/DC
48 V AC/DC
60 V AC/DC
110-120 V AC/DC
120-127 V AC/DC
220-240 V AC/DC
240-250 V AC/DC
380-400 V AC
440 V AC
DC = 200 W
AC = 200 VA
DC = 5 W
AC = 5 VA
 80 ms
2500V 50 Hz (per 1 min.)
Operating limits
(CEI EN 60947-2 Standards)
Inrush power consumption (Ps)
Inrush power time ~100 ms
Continuous power (Pc)
Opening time (YO - YO2)
Closing time (YC)
Insulation voltage
Apparatus
Doc. No
1SDH000460R0002
(YO-YO2) : 70...110% Un
(YC) : 85...110% Un
DC = 200 W
AC = 200 VA
DC = 5 W
AC = 5 VA
(max) 60 ms
60 ms ± 10 ms
2500V 50 Hz (for 1 min.)
Scale
Emax
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