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Contactors
Operating Instructions
Read and understand these instructions before installing, operating, or maintaining the
equipment.
DANGER
!
Hazardous voltage.
Will cause death or serious injury.
Turn off and lock out all power supplying this device before working on this
device.
CAUTION
Reliable functioning of the equipment is only ensured with certified components.
Limited protection against electric shock
!
Degree of protection IP 00 to IEC 60529
Safe-to-touch to DIN VDE 0106, Part 100
Only suitably qualified personnel may perform commissioning and maintenance.
Follow the Operating Instructions!
Mounting
For dimension drawings see Fig. I (Dimensions in mm).
Minimum clearance to earthed parts.
Screw-fastening on level vertical surface with 4 M10 screws, maximum tightening torque 23
Nm. Fasten screws with plain washers (diameter 25 mm, thickness 4 mm) and spring was-
hers provided. Use M8 screws (25 Nm max.) for the additional plate on LSDH6.../LSDH8...
for facilitating installation.
During installation, cover off the contactors if foreign bodies (e.g. drilling swarf) might fall
onto them. In the event of contamination danger, heavy dust or an aggressive atmosphere
install the contactors in housings. For permissible mounting positions see Fig. II.
To meet the conditions for positively-driven operation between main contacts and the NC
elements of the auxiliary contacts, 1 NC element of the right-hand and left-hand auxiliary
contact block must be connected in series.
Connection
Terminal screws are supplied loose.
For connection see Fig. III.
Permissible cross-sections for main conductors:
1 or 2 conductors connectable
Finely stranded with cable lug
Stranded with cable lug
Connection bars
AWG leads,
solid and stranded
Terminal screws
Tightening torque
Permissible cross-sections for auxiliary conductors:
Solid and stranded
Finely stranded with core end
Pin cable lug to DIN 46231
Push-on tab B2,8
AWG leads,
solid and stranded
Insulation stripping length
Tightening torque
Use 75° copper wire only.
For circuit diagram and position of terminals see Fig. IV.
For circuit diagram (NEMA) see Fig. A.
Operation
Note the control voltage (see printed coil plate).
The switching state of the contactor is shown by the indicator, see Fig. V. For LSDH6...
only: The operating time of the contactor of 70 to 120 ms can be reduced to 22 to 65 ms by
Order No.: B_LSDH_5340199
LSDH6...
LSDH8...
2
2
50 to 240 mm
50 to 240 mm
2
2
70 to 240 mm
70 to 240 mm
max. 2x50x5
up to 690 V
max. 2x60x5
up to 1000 V
max. 2x50x5
2/0 to 500 MCM
2/0 to 500 MCM
M10x30
M12x40
14 to 24 Nm/
20 to 35 Nm/
124 to 210 Ib.in
177 to 310 Ib.in
LSDH6.../LSDH8...
2
2
2x 0,5 to 1 mm
; 2x1 to 2,5 mm
2
2
2x 0,5 to 1 mm
; 2x0,75 to 2,5 mm
2
2x 1 to 1,5 mm
2
2x 0,3 to 1,5 mm
18 to 12
10 mm
0,8 to 1,4 Nm/7 to 12 lb.in
LSDH63G3, LSDH64G3 (1000 V)
LSDH82G3, LSDH83G3 (1000 V)
cutting through the yellow wire jumper, see Fig. VI. Reversing operation is then no longer
permissible.
After a short-circuit in the system, the switching state is not clearly shown by the indicator.
In this event, ensure that the main circuit is isolated. Then perform several off-load swit-
ching operations on the contactor. If the interrupter fusion does not come apart, the interrup-
ters must be renewed.
For an overvoltage test, the protective-circuit leads must be disconnected, see Fig. VIIa, as
otherwise the integrated overvoltage limiter is destroyed.
If the load side is changed, the protective-circuit wire connections at the terminal screws
must be changed over, see Fig. VIIa to c. For this, the middle interrupter must be removed,
see Fig. XIa to d. If the contactor is used in combination with frequency converters, the pro-
tective circuit must be disconnected.
With contactors for momentary-contact control, use relays without reclosing lockout; with
contactors for maintained-contact control, use relays with reclosing lockout.
Maintainance
The following are replaceable: Casing upper section with operating mechanism, vacuum
interrupters, magnet coil, auxiliary contact blocks.
In order to assure operating reliability of the contactors, only original spare parts may be
used!
Hazardous voltage
Before starting work, isolate the device!
Cleaning
Remove dust deposits (with a vacuum cleaner).
Renewing the auxiliary contact blocks
If necessary, the complete auxiliary contact block can be replaced (two
auxiliary contacts each with 2NO+2NC); see Fig. VIII.
For renewing the casing upper section, see Fig. IX.
For checking the vacuum interrupter erosion indication, see Fig. X.
The erosion on the vacuum interrupters can be checked in the closed state by means of 3
white double slides below the connections on the load side. If the clearance on one double
slide in the closed state is less than 0.5 mm, the interrupter must be renewed. To ensure
good operating reliability, it is advisable to renew all interrupters together.
Renewing the vacuum interrupters:
Remove and install the vacuum interrupters individually, i.e. one after the other! For remo-
ving, see Fig. XIa to e and installation.
For renewing the magnet coil, see Fig. XIIa to i
The coil and closing electronics must be replaced together. Ensure that the magnet pole
faces are clean; do not use any grease solvents for cleaning, do not apply oil and do not
scratch them with sharp objects.
Technical Data
Technical Data
Weight
Permissible ambient temperature
- Operation
- Storage
LSDH6...:
Main circuit
Insulation rating U
i
Rated operational current at 55 °C
up to
- 690 V
at
- 1000 V
I
AC-1 (690 V)
at 40 °C
e
Rating
at
- 230/220 V
- 240 V
- 400/380 V
- 415 V
- 500 V
- 690/660 V
- 1000 V
LSDH8...:
Main circuit
Insulation rating U
i
Rated operational current at 55 °C
up to
- 690 V
at
- 1000 V
I
AC-1 (690 V) at 40 °C
e
DIN VDE 0660 / IEC 60947
English
LSDH6...
LSDH8...
approx. 16 kg
approx. 19 kg
- 25 to +55 °C
- 25 to +55 °C
- 50 to +80 °C
- 50 to +80 °C
AC 1000 V
I
AC-1
AC-3
AC-4
e
A
630
630
300
A
450
435
210
700 A
P
AC-1
AC-3
AC-4
N
kW
240
191
93
kW
262
208
101
kW
415
335
160
kW
453
360
175
kW
545
434
210
kW
720
573
253
kW
780
600
290
AC 1000 V
I
AC-1
AC-3
AC-4
e
A
850
820
360
A
800
580
250
910 A
3
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