Siemens 8DA10 Series Installation And Operating Instructions Manual

Also see for 8DA10: Operating instructions

861-9601.9 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DA10 • Revision 11 133/214Installation28.3 Checking the circuits of the low-voltage equipment➭ Check the current transformer circuits according to the circuit diagrams.➭ Check the functions of all protection devices with a secondary test unit for relays.28.4 Checking high-voltage connections➭ Check the tightening torque of the fixing bolts of the cable plugs according to themanufacturer's instructions.➭ Check the earthing of the cable termination on all high-voltage cables.28.5 Checking electrical connectionsChecking deviceconnections➭ Check the screw-type connections of the devices in the low-voltage compartment atrandom with the torque wrench.➭ Check the plug-in connections of the devices in the low-voltage compartment at random.Checking auxiliary cableconnections➭ Check auxiliary cable connections on devices and terminal blocks at random.➭ Check all auxiliary cable connections on current transformer terminals including slides andjumpers in the low-voltage compartment.➭ Check the designation labels on the terminal blocks.➭ Replace missing labels using the information given in the circuit diagrams.28.6 Checking protection against environmental influencesFor touch-up work on doors and front parts, a paint pen is available on request.➭ Touch up surface damages.Fig. 156: Indication at the gas pressure manometer① < minimum functional level② Minimum functional level③ Rated functional level 120 kPa④ Maximum functional level 180 kPaThe data in kPa are values at 20 °Cambient air temperatureWARNINGInternal arcing and explosion hazardIf a voltage transformer is short-circuited, there will be a considerable current flow. Thisconsiderable current flow implies the risk of internal arcing, and the voltage transformercan explode and produce a fire. Death, serious injury and considerable property damagecan be the consequence.➭ Never short-circuit voltage transformers on the secondary side.➭ Check the voltage transformer circuits from the voltage transformer to the secondary fuseor short-circuit protective device for short circuits.➭ Check correct operation of the existing protective devices in the voltage transformersecondary circuit.