3.8.2 Instructions for safe generator operation
Take note of the following to ensure the safe operation of the machine with a generator:
➤
Check correct function of the insulation monitoring device daily.
➤ Do not ground the neutral line (N) or connect it to the common protective ground/equipotential
bonding (PE).
➤ Make sure the equipotential bonding to the ground is properly carried through (main power
supply and machine through cable to consumer).
➤ If the generator feeds a network (TN network), let the network's protective measures remain
effective or create another protective measure that is effective.
➤ Adjust the protective measures accordingly if the generator feeds a different network.
➤ Only a qualified electrician is allowed to carry out work on the generator or generator control
box. The electrician is responsible for the effectiveness of the protective measures provided.
➤ Do not use the generator to feed the worksite distribution board.
➤ A generator with insulation monitoring must not be connected to another insulation monitoring
device as these monitoring devices will then have counter effects.
➤ Ground fault current (F1) protection switches do not function in ungrounded networks (IT net‐
work such as provided by the generator). The isolation provided by the generator, however,
renders an additional ground fault current protection switch unnecessary.
➤ Follow the regulations of the local electricity supply utility and obtain any necessary permits.
➤ When cleaning the inside of the machine, do not direct water or steam jets directly at the gen‐
erator or terminal box.
➤ Check regularly that all electrical connections are tight and in proper condition.
3.8.3 Connecting extension cables
➤ When operating the generator, observe the regulations regarding the connection of extension
cables.
Keep in mind:
■ In IT networks, the total length of power cables may not exceed 820 ft (DIN VDE 0100, Part
728 / IEC 60364-5-551).
■ Use at least H07RN-F cables to DIN VDE 0282 Part 4 (IEC 60245-4 / HD 22.4) as non-fixed
extension cables.
3.8.4 Do not exceed the maximum supply system load
➤ When operating the generator, do not exceed the maximum supply system load due to con‐
nected electrical consumers.
Bear in mind:
■ The power consumption values of simultaneous consumers are added.
■ The maximum continuous power loading on the generator by the connected consumers is limi‐
ted by the safety cut-out.
3.8.5 Perform regular generator inspections
To ensure a safe operation, the machine must be subjected to regular inspections.
Daily inspection prior to activating the device by authorized operating personnel:
➤ Insulation monitor function check.
3 Safety and Responsibility
3.8 Generator operation
No.: 9_9548 05 USE
Operator Manual Screw Compressor
M27
33
To Next Page
Loading...
