MR VACUTAP - Commissioning Procedures; Commissioning Transformer at Site; Filling the Oil Compartment

4 Commissioning
Maschinenfabrik Reinhausen GmbH 202030 5788897/03 ENVACUTAP
®
VVS
®
4 Commissioning
WARNING
Danger of explosion!
Explosive gases in the oil compartment of the on-load tap-changer, trans-
former, pipework system, oil conservator and at the dehydrating breather
opening can deflagrate or explode and result in severe injury or death!
► Ensure that there are no ignition sources such as naked flame, hot sur-
faces or sparks (e.g. caused by the build-up of static charge) in the trans-
former's immediate surroundings during commissioning and that none oc-
cur.
► Do not operate any electrical devices (e.g. risk of sparks from impact
wrench).
► Only use conductive and grounded hoses, pipes, and pump equipment
that are approved for flammable liquids.
WARNING
Danger of explosion!
Overloading the on-load tap-changer can lead to explosion. Spraying hot in-
sulating fluid and flying parts can lead to death and serious injuries. Prop-
erty damage is highly probable.
► Ensure that the on-load tap-changer is not overloaded.
► Ensure use of the on-load tap-changer in accordance with section "Ap-
propriate use".
► Prevent operations outside of the permitted operating conditions by tak-
ing suitable measures.
4.1 Commissioning transformer at operating site
Before energizing the transformer, check that the motor-drive unit and pro-
tective devices are functioning correctly and fill the on-load tap-changer oil
compartment with fresh insulating fluid.
4.1.1 Filling the oil compartment of the on-load tap-changer with oil
1. NOTICE! Check whether the on-load tap-changer head cover has a
flange for attaching a pressure relief device. If it does, operation without a
pressure relief device is not permitted and may result in damage to the
on-load tap-changer.
ð Fit a pressure relief device which is approved for this on-load tap-
changer on the on-load tap-changer head.