L3692
Tmax T8
22/39
Doc N°
Mod.
Apparatus
Scale
Page N°
1SDH000682R0002
L3885
L5757
Gearmotor for automatic loading of the closing springs (M)
Automatically loads the closing springs of the circuit-breaker's operating mechanism. Once the circuit-breaker has closed, the gearmotor im-
mediately begins to reload the closing springs.
The closing springs can still be loaded in the manual mode (using the relative lever of the operating mechanism) in a power failure or during
maintenance work.
Power supply (D):
24-30 V AC/DC
48 V AC/DC
60 V AC/DC
110-127 V AC/DC
220-250 V AC/DC
Adjustable opening time (YU+UVD):
0.5-1-1.5-2-3 s
Time-delay for undervoltage release (UVD)
The undervoltage release can be used in conjunction with an electronic time-delay device, which must be installed outside the circuit-breaker
and which delays release tripping with preset, adjustable times. Use of the delayed undervoltage release is useful for preventing trips when the
power supply network of the release may be subject to power cuts or brief voltage dips.
When it is not powered, circuit-breaker closing is prevented.
The time-delay device must be used with an undervoltage release with the same voltage.
Reference fi gure in the electrical circuit diagrams: YU + D; (7).
The characteristics of the time-delay device are:
Power supply
24-30 V AC/DC
48-60 V AC/DC
100-130 V AC/DC
220-250 V AC/DC
Operating limits:
85…110% Un
(Standard CEI EN 60947-2)
Insulation voltage:
2500 V 50 Hz (for 1 min.)
IT is always supplied with limit contacts and microswitch for signalling closing springs loaded.
Reference fi gure in the electrical circuit diagrams: M (1)
Mechanical and electrical trip signalling for overcurrent releases
The following signals are available after the overcurrent release has tripped:
a) Mechanical trip signalling for overcurrent releases
Enables visual signalling on the operating mechanism by pushing the trip button in when the circuit-breaker has been opened after the overcurrent
releases have tripped. The circuit-breaker can only be closed again by putting the pushbutton back in its normal position in the standard confi guration.
Reference fi gure in the electrical circuit diagrams: S51 (13).
b) Electrical trip signalling for overcurrent releases
Enables visual signalling on the operating mechanism (mechanical) and remotely (electrically, by means of a change-over switch) of the circuit-
breaker having opened after tripping of the overcurrent releases. The mechanical indicator pushbutton must be reset before the circuit-breaker
can be reset. Reference fi gure in the electrical circuit diagrams: S51 (13).
c) Coil for resetting the mechanical release trip indicator
Enables visual signalling on the operating mechanism (mechanical) and remotely (electrically, by means of a change-over switch) of the circuit-
breaker having opened after tripping of the overcurrent releases. Using this accessory, you can reset the mechanical indicator with an electrical
relay via remote control and this allows the circuit-breaker to be reset.
Reference fi gure in the electrical circuit diagrams: S51 (14)
Power supply:
24-30 V AC/DC
220-240 V AC/DC
110-130 V AC/DC
Inrush power consumption (Ps): DC = 500 W
AC = 500 VA
Rated power (Pn):
DC = 200 W
AC = 200 VA
Inrush time
0.2 s
Loading time:
4-5 s
Auxiliary contacts
Auxiliary contacts installed on the circuit-breaker are available and allow an indication of the circuit-breaker's state to be obtained. A special ver-
sion of the auxiliary contacts is also available (gold plated contacts) for use at less than 24 V rated voltage (digital signals).
Un
In max
T
125 V DC
0.3 A
10 ms
250 V DC
0.15 A
10 ms
Un
In max
cos
ϕ
250 V AC
5 A
0,3
400 V AC
2 A
0,3
Содержание Tmax T8 L3692
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