Alle Rechte und Änderungen vorbehalten.
Subject to change without notice. All rights reserved.
© Bender GmbH & Co KG
UMA710-2-xx-ISO-xx, Manual.docx
Issued: 11.Jan.2016
21
5. Installation of UMA710-2-xx-ISO-xx-
…
5.1. Safety Advice
The safe use of this electrical equipment implies that it has been wired-up and commissioned by electrical
skilled personnel.
Only skilled persons may work on this module. Skilled means, persons who are familiar with
the assembly, commissioning and operation of the equipment and have undergone appropriate
training. Such persons must have read this manual and understood all instructions relating to
safety.
•
The latest standards and regulations have to be followed.
•
The national safety and accident prevention regulations have to be followed.
•
The power has to be turned off before working on this electrical equipment.
•
Precautions have to be made that the equipment can not be turned back on by accident.
•
The connection/wiring is only allowed in compliance to the wiring diagram and its comments.
If the comments and wiring diagrams are not being followed, the wiring been changed or not recommended
accessory is being used, injury, fire, electrical shock and other damage can occur.
The unique and individual wiring diagram and elevation drawings of this module as well as the
data sheets of the installed components, are also part of this operation manual and must be
carefully read as well.
5.1.1. Short circuit protection
Please observe the requirements of IEC 60364-7-710:2002-11 and DIN VDE 0100-710 (VDE 0100 Part
710) when selecting fuses for the supply cables and outgoing circuits of the changeover modules:
Section: 710.512.1.6.2 (VDE), sections 710.5.3.1, 710.512.1.6 (IEC), Transformers for the IT
system: Where transformers, their primary supply conductor and secondary outgoing line are
concerned, overcurrent protective devices are only permitted for short-circuit protection. The
transformer supply cable from the changeover module and the transformer outgoing cable to the
next distribution board section should be laid so that they are short-circuit proof and earth fault
proof. Recommended cable/wire: Halogen-free, flexible single core, double insulated rubber wire
type NSHXAFö 1.8/3kV.
Section: 710.53.2 (VDE), section 710.413.1 (IEC), Protection of the cable system in Group 2
locations: The choice of protective devices must ensure that when the anticipated short-circuit
current occur, the protective device upstream of a fault will selectively trip the protective devices
that are further upstream.
Section 710.537.6.2. (VDE), section 710.413.1.1 (IEC), Connecting several load groups
downstream of a changeover module must not lead to all the load groups failing in the event of a
fault. As a result, the choice of fuses F should ensure both short-circuit protection for the
transformer and selectivity for the overcurrent devices connected downstream in the IT systems
