00193437-03_AI_PowerSupplyConversion_DE EN - 第150页
2 Safety check to DIN EN 60 204 Assembly Instructions, Converting the Power Supply 2.3 Insulation test 12/2013 Edition 148 2.3 Insulation test 2.3.1 Permissible minimum insul ation resist ance The insulation resist ance …
Assembly Instructions, Converting the Power Supply 2 Safety check to DIN EN 60 204
12/2013 Edition 2.2 Testing equipment
147
2.2 Testing equipment
2.2.1 Three-phase AC socket with connecting cable for the insulation and
high-voltage test
For the insulation and high-voltage tests, you will need a three-phase AC socket with connecting
cable as shown in the following drawing. This is used to electrically connect the test piece to the
testing device in the distributor box. The ends of the cables may be plugs or sockets, depending
on the type of connection. 2
Fig. 2 - 1 Three-phase AC socket for the insulation and high-voltage test
2.2.2 Socket with earthing contact and connecting cable for the insulation and
high-voltage test
For the insulation and high-voltage tests, you will need a socket with earthing contact and a con-
necting cable as shown in the following drawing. This is used to electrically connect the test piece
to the testing device in the distributor box. The ends of the cable may be
plugs or sockets, depending on the type of connection. 2
Fig. 2 - 2 Socket with earthing contact for the insulation and high-voltage test
2 Safety check to DIN EN 60 204 Assembly Instructions, Converting the Power Supply
2.3 Insulation test 12/2013 Edition
148
2.3 Insulation test
2.3.1 Permissible minimum insulation resistance
The insulation resistance is measured at 500 VDC between the conductors of the main power cir-
cuits and the protective earth conductors. 2
The permissible minimum insulation resistance is > 1.0 MOhm. 2
PLEASE NOTE:
All the electrical connections must be fully installed on the machine, including those for the power
supply. 2
2.3.2 Insulation testers
2
2
Available testers
– GOSSEN-METRAWATT 204P (0.05 - 50 MOhm)
– METRAMACHINE 204/2,5 (complete system for tests to EN 60204-1
(VDE0113) consisting of Profitest 204, Profitest 204 HP, Signal 204,
Leadex 204, and Caddy 204
Measuring range 0.4 - 10 MOhm
Measuring voltage 500 VDC
Tab. 2 - 1 Insulation testers
Assembly Instructions, Converting the Power Supply 2 Safety check to DIN EN 60 204
12/2013 Edition 2.4 High-voltage test
149
2.3.3 Performing the insulation test
Create a test set-up as illustrated in figure 2 - 3.
Follow the instructions in the manual for the testing device.
Measure the insulation resistance at 500 VDC.
Enter the measured value into the test report.
If the measured value is > 1.0 MOhm, the machine has passed the insulation test and can be
released. If the measured value is smaller, the error must be eliminated and the test repeated.
Fig. 2 - 3 Insulation test set-up
2.4 High-voltage test
2.4.1 Minimum durations and voltages for the high-voltage test
The electrical system must withstand a test voltage applied between the conductors of all the
power circuits and the PE conductor system for at least 10 seconds. 2
The test voltage must 2
– be twice the rated voltage for the electrical system or 1000 VAC (Canada: 1500 VAC), which-
ever is the higher.
– have a frequency of 50/60 Hz and
– be powered by a transformer with a minimum rated output of 500 VA.
2
PE
N
L3
L2
L1
L1
L2
L3
N
PE
METRAWATT
tester
METRAWATT 204P, METRAMACHINE 204
grounding socket
three-phase current plug or
Distributor box with
Power cable
Probe tips
Machine,
WPC
CO table,
supply for
Power