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S-20/S-23HM/F4/F5/F 5HM/S-25HM/HS- 50 Conversion Instructions Power supply 03/2001 Edition 1 Safety instructions 71 1 Safety instructions RISK OF DEA TH 1 The powe r supp ly mu st on ly be c onverte d by SIE MENS engi ne…
Stromversorgung Umrüstanleitung S-20/S-23HM/F4/F5/F5HM/S-25HM/HS-50
4.6 Stromlaufpläne HS-50 Ausgabe 03/2001 Issue
70
S-20/S-23HM/F4/F5/F5HM/S-25HM/HS-50 Conversion Instructions Power supply
03/2001 Edition 1 Safety instructions
71
1 Safety instructions
RISK OF DEATH 1
The power supply must only be converted by SIEMENS engineers or suitably qualified personnel,
e.g. specialist electricians.
A specialist electrician is anyone who has sufficient technical training, knowledge and experience,
and knowledge of the relevant standards, to be able to assess and recognize the dangers inherent
in the work assigned to them (explanatory notes to DIN VDE 0105 part 1 (07.83), DKE authors’
committee 224). 1
(1) Always follow the accident prevention regulations applicable in your country, e.g. EN 60.204.
(2) End all placement operations on the placement system.
– If an uninterruptible power supply (UPS) is installed on the machine, continue from point (3).
– If the machine does not have an uninterruptible power supply (UPS), shut down the
Windows NT operating system correctly, otherwise you may experience problems or lose
data when the machine is restarted.
(3) Switch the placement system off at the main switch.
(4) Disconnect the main power cable from the main power supply.
(5) Secure the main power cable to prevent reconnection to the main power supply.
(6) Secure the system to prevent reclosing and put up a sign to indicate that servicing work is
being carried out (see section 2 'Operational safety' in the operating instructions).
(7) When the conversion is complete, carry out a safety check (see section 2 'Safety check to
DIN EN 60 204').
PLEASE NOTE: 1
The safety check to DIN EN 60 204 applies to European Union countries. Individual country-
specific regulations should be followed in all countries outside the EU. This also applies to
the warning signs and means of securing that are used during conversion and the safety
check. 1
Power supply S-20/S-23HM/F4/F5/F5HM/S-25HM/HS-50 Conversion Instructions
2.1 Safety instructions 03/2001 Edition
72
2 Safety check to DIN EN 60 204
The safety check comprises: 2
– insulation test
– high-voltage test and
– PE conductor test on the machines and components.
2
To protect the test set-up, you will need 2
– a barrier chain
– a red flashing light to signal the high-voltage tests
– country-specific warning and identification signs to draw attention to the fact that work and
high-voltage tests are being carried out on the electrical system.
2.1 Safety instructions
RISK OF DEATH 2
Å Make sure that no unauthorized persons can come into contact with any parts of the machine.
Å Secure the testing area with a barrier chain and warning signs.
Å Also switch on a red flashing light during the high-voltage test.
Å House the electrical points of contact between the test device and test piece in a distributor box
with protective hood.
Å Make sure that the protective hood remains closed during the test.
Å Monitor opening of the protective hood with a circuit-breaker.
The circuit-breaker must be incorporated into the safety circuit of the high-voltage testing
device so that the high voltage is switched off immediately if the protective hood is opened.
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