42
Electric connection of electric trolleys
The contactors for switching the trolley motor are located in a special contactor box. This contactor box is assembled
with two screws M8x16 DIN 912 on a side plate with the motor.
Connect the two leads protruding from the contactor box to the control compartment of the hoist as shown in wiring
diagram. After having completed the installationwork check for proper operation.
Figure 7: Electric connection of the trolleys
Explanation of the trolley type designation
E F N
/ 1 2 , 5 t /
B 1 3 /
4+16
electric flange
load capacity suitable for travelling speeds
trolley
width
version
N,S1
Tests
The use of the electric chain hoist is possible in accordance with accident prevention regulations for
Windlasses, lifting and pulling equipment
VBG 8
Cranes
VBG 9 (German regulations)
Test when used according to VBG 8, section 23
The equipment must be tested by a trained specialist before starting operation for the first time and after extensive
alterations.
Test when used according to VBG 9, section 25
The cranes must be tested by an expert before starting operation for the first time and after extensive alterations. The
electric chain hoists are type tested.
Regular tests
The equipment, cranes and supporting structures must be tested by a trained specialist once a year. It may be
necessary to carry out tests more often if the operating conditions are very demanding, that means for example high
percentage of use with full load, dusty or aggressive environment, high duty rate, high number of operation cycles. If
carried out this regular test the remaining period of operation has to be calculated and recorded (for Germany only)
Only experts appointed by the trade associations and experts from the Technical Control Association are considered
qualified to test cranes.
Trained specialists are highly-
qualified specialist personnel or the manufacturer’s after-sales assemblers.
Terminal for
the hoisting
motor
Connection
cable between
hoist
and
hoisting motor
Control cable
Strainer relief
Trolley contactor
box
Connection cable
between
hoist
and trolley
Contactor control
of the hoist
Mains
supply
cable
Connection cable
between
hoist
and
hoisting
motor
Cable
for
pendant control
