Synchronous Generators BG 132 and BG 160

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Synchronous Generators BG 132 / BG 160 Chapter 5, Operation 5.6.3 Checking the insulation monitoring unit (if available) CAUTION If your generator is equipped with the option "Insulation monitoring with switching-off", the correct function of the insulation monitoring unit has to be checked every working day. The generator may only be taken into operation, if the correct function of the insulation monitoring unit has been confirmed. Proceed as follows to check the insulation monitoring unit (refer to Figure 27 for the location of the control elements and indicators): 1. Unplug all devices and cables connected to the generator. 2. Start the engine. The check must be performed while the generator is running. 3. Open the cover of the control box and switch on the insulation monitoring unit (position "ON" or "I"). 4. Push the red test push-button which is at the same time used as an indicator. Now the insulation monitoring unit must trip. 5. Check whether the insulation monitoring unit has tripped and the red indicator "FAULTY INSULATION" is on. NOTE If the insulation monitoring unit does not trip or if the "FAULTY INSULATION" indicator does not light, the generator must not be used any longer. In this case, mark the generator as defective and have it repaired (refer to section 7 on page 92). 6. Stop the engine to reset the insulation monitoring unit. 7. Switch on the insulation monitoring unit again (position "ON" or "I") and correctly close the cover of the control box (tighten the locking screws by hand). 8. If the check was successful the generator is now ready for operation. 84 Issue date: August 2002
Synchronous Generators BG 132 / BG 160 Chapter 6, Maintenance 6 Maintenance All components of the generator are maintenance-free in principle (exception: changing the carbon brushes holder for brush-type generators, see section 6.4.1 on page 89). Nevertheless, the maintenance operations listed in section 6.1 have to be performed regularly and on time to ensure reliable operation of the generator. CAUTION In addition to the work described in this chapter, the driving system/engine possibly has to be checked according to the guidelines and regulations of the driving system/engine manufacturer. This also includes the correct attachment of protective covers. Be sure to observe the maintenance instructions of the driving system/engine manufacturer. Do not open or disassemble the housing of the generator or the control box! The generator may only be opened by the manufacturer or an agency authorized by the manufacturer. It does not contain any components which can be replaced or repaired by the user. It is not allowed to perform any work or operations not described in this manual. Any damages and defects found on the generator have to be repaired immediately by authorized and qualified personnel independent of the maintenance intervals. The generator must not be taken into operation until any defects have been removed. Any repair work must only be carried out by adequately trained qualified personnel. Issue date: August 2002 85
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Synchronous Generators BG 132 and BG 160

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