3 Product description
Maschinenfabrik Reinhausen GmbH 2018
15
1800059/09 EN
RS
3 Product description
This chapter contains an overview of the design and function of the product.
3.1 Scope of delivery
The product is packaged with protection against moisture and is delivered as
follows:
▪ Protective relay
▪ Technical files
Please note the following:
▪ Check the shipment for completeness on the basis of the shipping docu-
ments.
▪ Store the parts in a dry place until installation
▪ The product must remain in its airtight, protective wrapping and may only
be removed immediately before installation
3.2 Function description
The protective relay is looped into the circuit breaker tripping circuit, thus
protecting the on-load tap-changer and transformer in the event of a fault
within the on-load tap-changer oil compartment. It is tripped when the speci-
fied speed of flow from the on-load tap-changer head to the oil conservator
is exceeded due to a fault. The flowing insulating fluid actuates the flap valve
which tips over into position OFF. The contact in the dry-reed magnetic
switch is thereby actuated, the circuit breakers are tripped, and the trans-
former is de-energized.
The protective relay is a component of an on-load tap-changer filled with in-
sulating fluid and its properties conform to the respective applicable version
of IEC publication 60214-1.
Diverter switch operations at rated switching capacity or at permissible over-
load will not cause the protective relay to trip.
The protective relay responds to flow, not to gas accumulated in the protec-
tive relay. It is not necessary to bleed the protective relay when filling the
transformer with insulating fluid. Gas accumulation in the protective relay is
normal.
Summary of Contents for RS 2001
Page 1: ...Protective relay RS Operating instructions 1800059 09 EN ...
Page 50: ......
Page 51: ......
