2 Safety
Maschinenfabrik Reinhausen GmbH 2019
11
6107891/02 EN
ECOTAP
®
VPD
®
▪ Ensure that all necessary work is performed by qualified personnel only.
▪ Use the equipment and special tools supplied solely for the intended pur-
pose and in accordance with the specifications of this technical file.
Permitted electrical operating conditions
In addition to the design data in accordance with the order confirmation, ob-
serve the following limits for the through-current and the step voltage:
In the standard version, the on-load tap-changer is designed for sinusoidal
50/60 Hz AC current with a curve form symmetrical to the zero axis and can
switch twice the rated through-current I
r
at its rated step voltage U
ir
.
Exceeding the rated step voltage U
ir
for a short period by up to 10% is per-
mitted if the rated through-current I
r
is not exceeded.
2.2 Inappropriate use
Use is considered inappropriate if the product is used in a way other than as
described in the "Appropriate use" section. In addition, observe the following:
Prohibited electrical operating conditions
All operating conditions that do not comply with the design data in accor-
dance with the order confirmation are prohibited.
Prohibited operating conditions may arise due to short circuits as well as due
to inrush current impulses when energizing transformers or other electrical
machines. This applies to the affected transformer itself just as it does to
transformers electrically connected in parallel or serially or other electrical
machines.
Higher voltages may occur due to transformer overexcitation following load
shedding, for example.
Operations outside of the permitted operating conditions can lead to injury to
persons and damage to the product.
▪ Prevent any such operations outside of the permitted operating conditions
by taking suitable measures.
2.3 Fundamental Safety Instructions
To prevent accidents, disruptions and damage as well as unacceptable ad-
verse effects on the environment, those responsible for transport, installa-
tion, operation, maintenance and disposal of the product or parts of the prod-
uct must ensure the following:
