Siemens 3TF42 Instructions De Service page 2

Contactor
Instructions
W
ARNING:
HAZARDOUS VOLTAGE
CAN CAUSE ELECTRICAL SHOCK
DISCONNECT POWER BEFORE PROCEEDING
WITH ANY WORK ON THIS EQUIPMENT.
Limited protection against contact with live parts
Degree of protection IP 20 to IEC 60529
Safe from finger touch to DIN VDE 0106, Part 100
!
Commissioning and maintenance by qualified personnel only.
Follow the operating instructions.
Installation
For dimension drawings (dimensions in mm) see Fig. I.
With screw terminals
> Fig. I a
for a.c. operation
> Fig. I b
for d.c. operation
With tab connectors
> Fig. I c
for a.c. operation
> Fig. I d
for d.c. operation
1) Minimum clearances from earthed parts
Snap onto 35 mm standard mounting rail to DIN EN 50 022 or fix on a
plain surface with two M4 screws. With screw mounting, always use
plain washers and spring washers.
Cover the contactors during installation if foreign particles, such as
swarf, can fall onto them. Install contactors in a housing if they are
exposed to dirt, dust or aggressive atmospheres.
For permissible mounting positions see
> Fig. II a
for a. c. operation
> Fig. II b
for d. c. operation
Connection
The terminal screws can be tightened with a power screwdriver.
Screwdriver blade width: 5 mm
Tighten all terminal screws even if not used.
1. With screw terminals
> Permissible cross>sections for main conductor:
Solid
Finely stranded, with end sleeve
Terminal pin in accordance with DIN 46231
AWG wires
Tightening torque
> Permissible cross>sections for auxiliary conductor :
Solid
Finely stranded, with end sleeve
Terminal pin in accordance with DIN 46231
AWG wires
Tightening torque
2
AND BURNS.
2¥2.5 to 6 mm 2
2¥1.5 to 4 mm 2
1¥1 to 6
2¥AWG 14 to 10
1.0 to 1.5 Nm/9 to 13 lb
2¥0.5 to 1 mm 2
2¥1 to 2.5 mm 2
2¥0.75 to 2.5 mm 2
2¥1 to 1.5
2¥AWG 18 to 12
0.8 to 1.4 Nm/7 to 12 lb
Oder No.: 3ZX1012>0TF01>1BA1
2. With tab connectors
Contactors with tab connectors (2.8¥0.8 mm) for auxiliary contacts and
coils.
For circuit diagram and position of connection terminals see Fig.!III!a!to!e.
> Fig. III a
1NO
> Fig. III b
2NO
> Fig. III c
1NO+1NC
> Fig. III d
2NO+2NC
> Fig. III e
position of connection terminals
Use 75 ∞C copper wire only.
For circuit diagram (NEMA) see Fig. A.
Operation
Observe operating voltage (see rating plate of magnet coil).
The operating state of the contactor is shown at the position indicator; see
Fig. IV.
When the system voltage is applied and the load is connected, do not
!
operate the contactor by pressing down the position indicator.
Maintenance
The following components can be replaced: magnet coil
For Order Nos. see Catalog NSK.
Only use of original spare parts ensures the operational safety of the
contactors.
HAZARDOUS VOLTAGE
CAN CAUSE ELECTRICAL SHOCK AND BURNS.
Disconnect power before proceeding with any
work on this equipment.
Cleaning
Remove dust by suction.
Magnet coil
For coil replacement see
> Fig. V a
a.c. coil
> Fig. V b
d.c. coil
Ensure that the pole faces of the magnet coil are clean. Do not use grease
solvents or sharp objects for cleaning.
Technical Data
Weight
> a.c. operated
> d.c. operated
Permissible ambient temperature
> Operation
.
in
> Storage
Main circuit
Rated insulation voltage U i
Rated operational current I e /AC>1 (55 ∞C) A 30
Rated operational voltage
.
in
> 230 V
> 240 V
> 400 V
> 415 V
> 500 V
> 690 V
3TF42, 3TF43
DIN VDE 0660, IEC 60947
approx. 470 g
approx. 670 g
> 25 to+55 ∞C
> 50 to+80 ∞C
AC 690 V
Motor rating P
3TF42 3TF43
kW 4 5.5
kW 4 5.5
kW 7.5 11
kW 7.5 11
kW 9 11
kW 11 11
/AC>3
N