HTP MicroCut 45 DV, Руководство оператора

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8. APPENDIX
6.1 About the HTP MicroCut 45DV Voltage Divider
The MicroCut 45DV machines are equipped with an optional, factory-installed, four-
position voltage divider that is designed to be safely connected without tools. The built-
in voltage divider provides a scaled down arc voltage of 20:1, 21.1:1, 30:1, 40:1, and
50:1 (maximum output of 18 V). An optional receptacle on the rear of the power supply
provides access to the scaled down arc voltage and signals for arc transfer and plasma
start.
Note:
The factory presets the voltage divider to 50:1.
The factory-installed internal voltage divider provides a maximum of 18 V
under open circuit conditions. This is an impedance-protected functional extra
low voltage (ELV) output to prevent shock, energy, and fire under normal
conditions at the machine interface receptacle and under single fault conditions
with the machine interface wiring. The voltage divider is not fault tolerant and
ELV outputs do not comply with safety extra low voltage (SELV) requirements
for direct connection to computer products.
Note:
The cover on the machine interface receptacle prevents dust and moisture from
damaging the receptacle when not in use. This cover should be replaced if damaged or
lost.
Installation of the machine interface cable must be performed by a qualified service
technician. To install a machine interface cable:
1. Turn OFF the power and disconnect the power cord.
2. Remove the machine interface receptacle’s cover from the rear of the power supply.
3. Connect the machine interface cable to the power supply.