ESAB Fabricator 181i, Руководство по обслуживанию

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ESAB FABRICATOR 181i
TROUBLESHOOTING 6-8 Manual 0-5449
6.11 DC Bus Voltage Measurement
Apply voltage to the Power Source.
WARNING
There are extremely dangerous voltage and power levels present inside these Power Sources. Do not
attempt to diagnose or repair unless you have had training in power electronics measurement and
troubleshooting techniques.
Once power is applied to the Power Source, there are extremely hazardous voltage and power levels
present.
Do not touch any live parts.
4
3
1
2
5
6
7 8
10
9
12
11
14
13
16
15
17
18
19
20
21
22
A-09988
DC Bus Testing Multimeter Lead Placement Voltage with Supply Voltage OFF
Upper capacitor bank
Positive meter lead to testpoint 1
Negative meter lead to testpoint 2
161 VDC +/-10%
Lower capacitor bank
Positive meter lead to testpoint 3
Negative meter lead to testpoint 4
161 VDC +/-10%
Overall capacitor bank
Positive meter lead to testpoint 1
Negative meter lead to testpoint 4
322 VDC +/-10%
Table 6-9 DC BUS, Multimeter set to measure DC volts
Note: These DC voltages are at nominal mains supply voltage of 230VAC.