BA_WP_SPM2-1000_EN_28-22.docx
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6.7
Electrical Connections
The connection must be carried out by an authorised electrician!
Please observe the specified nominal voltage 400 VAC / 50 Hz (3 phases / N / PE)!
•
The supply cable is inserted through the cable gland at the bottom of
the terminal box, which is located on the right side of the machine
(see
•
The connection to the mains (3 phases) is made in the terminal box.
The 3 phases are to be connected to the terminals “
L1
”, “
L2
” and “
L3
”.
•
The protective earth wire (yellow/green) is to be connected to the ter-
minal marked “PE”.
•
Then close the cable gland again so that it is dust-tight.
•
Observe the direction of rotation of the cutter block!
Figure 9: Terminal box
Important: Check the correct direction of rotation of the milling spindle during initial com-
missioning and after any change to the connection to the three-phase mains!
If the direction of rotation is wrong, the phase lines L1 and L2 must be interchanged.
Only if the connection is carried out by an authorised electrician can a guarantee be given for the motor. In the
event of a complaint, the electrician must confirm in writing that he has connected the machine in accordance
with the regulations.
The fault loop impedance and the suitability of the overcurrent protection device must be
checked at the installation site of the machine.
6.7.1
Supply Cable and External Fuse Protection
Use a Cu, 5-core cable. The wire cross section must be determined on site by a qualified electrician!
The electrical cabling and the connection must be performed by a specialist according to the applicable local
EVU, VDE, and EN provisions. We
recommend the use of a rubber cable type Н07RN (WDE0282), whereby addi-
tional measures must be taken to protect against mechanical damage. To determine the required cross-section
of the supply cable and the external fuse, use the data from the following table:
Consumption current (А)
Required wire cross-section
Required external fuse
up to 10
2.5 mm
2
12 А (slow)
from 10 to 14
4.0 mm
2
16 А (slow)
from 14 to 18
6.0 mm
2
20 А (slow)
from 18 to 22
6.0 mm
2
25 А (slow)
from 22 to 28
10.0 mm
2
32 А (slow)
from 28 to 36
10.0 mm
2
40 А (slow)
from 36 to 46
16.0 mm
2
50 А (slow)
