The copying, distribution and utilization of this document as well as the communication of its
contents to others without expressed authorization is prohibited. Offenders will be held liable
for the payment of damages. All rights reserved in the event of the grant of a patent, utility
model or ornamental design registration.
Surge monitor
3EX5 030 / 3EX5 050
Operating Instructions
3EX5 030
Siemens Aktiengesellschaft
All rights reserved.
© Siemens AG • 10/2003
Order-No.: 928 00031 176b
3EX5 050
Contents
Contents
1
General
2
AC Versions
2
Installation
3
Maintenance
4
Disposal arrester and arrester accessories
4
The manufacturer of this surge arrester
Siemens AG
Power Transmission and Distribution Group
High Voltage Division
has introduced and applies a quality system in accordance with
DIN ISO 9001 / EN 29 001
Quality systems: Model for quality assurance This system was first demonstrated in 1989 to the
DQS (German Association for the Certification of Quality Systems).
The electrical testing laboratories and the materials technology laboratories of the manufacturer
have been certified since 1992 by the German Accreditation Body in accordance with DIN EN 45 001.
If you require further copies of the operating instructions, please order them from the appropriate Siemens office,
indicating the title and order number shown on the title page.
Published by:
In case of request:
Siemens AG
PTD H 4
D-13623 Berlin
Telephone exchange
Sales department:
Fax:
e-mail:
+49 / 30 / 386 1
+49 / 30 / 386 23061
+49 / 30 / 386 26721
mailto:Arrester@Siemens.de
Subject to change.
Note
The equipment covered by these instructions should be installed and serviced only by
competent personnel familiar with good safety practices. This instruction is written for
such personnel and is not intended as a substitute for adequate training an experience in
safe procedures.
This information is intended for the correct installation of this product. Siemens has no control over the condition
of the network, which can be greatly affected by the installation of a product. It is the responsibility of the user to
chose the appropriate method of installation. Under no circumstance is Siemens liable for any direct or indirect
damage caused by the use or misuse of this product.
General
This product is a robustly constructed instrument suitable for installation in the earth connection of a
surge arrester which must be isolated from earth for the counter to operate correctly.
To prevent damage the product must not be subjected to rough handling or mechanical shocks either
during or after installation.
¾
¾
Model 3EX5 030 is suitable for use with single arresters or three phase sets.
Model 3EX5 050 is suitable only for use with a single arrester.
The counter is sealed in a weatherproof housing with a serial number on the back of the housing.
AC Versions
A voltage-free contact is available to allow connection to a remote counter or indicator. The contacts
are related 0,5A 240V AC maximum.
2
© Siemens AG • 10/2003
Installation
Warning
Before any work starts:
¾ switch off and isolate
¾ secure against reclosing
¾ verify that equipment is dead
¾ earth and short circuit the equipment
¾ cover or fence off nearby live parts
Death, severe injury and considerable damage to
property and environmental damage may result if
the safety instructions are not followed.
¾
1
2
3
4
5
6
7
Fig. 1
Confirm that these safety measures have been carried out.
Line termination M12 nickel plated brass fitted with 2-nickel plated brass locknuts
Moulded resin insulator
Hermetically sealed glass display panel
Ground termination M12 nickel plated brass fitted with 2-nickel plated brass locknuts
M12 × 35 galvanised steel set screw with full nut and spring washer
Surge Counter
leakage current display (only 3EX5 050)
Surge counter 3EX5 030 / Surge monitor 3EX5 050
Note
The product should ideally be mounted at eye-level on a horizontal surface such as
cross-channel or angle support.
Operation is not impaired at angles up to 60° total.
A clearance of at least 30mm must be allowed between the live terminal of the surge
counter and any earthed object.
© Siemens AG • 10/2003
3
Connections to the surge counter may be made with either cable or bare conductor with suitable termination to the M12 line and earth studs, which are nickel plated brass. Care should be taken when
tightening the connections to avoid overstressing the terminals and the use of two spanners is recommended. Should bare conductor be used this also be isolated from any earthed structure by 30mm.
The max. torque with tightening the nuts/mothers may not are exceeded:
¾
M12: 40Nm
Maintenance
Under normal operating conditions this product does not require any maintenance, except for periodic
cleaning of the glass and the line bushing. The tightness of the connections should be checked at the
same time.
No electrical tests should be undertaken to the counter without the previous agreement of the manufacturer.
Disposal arrester and arrester accessories
Surge arresters and the accessories are an environmentally compatible product. In disposal, priority
must be given to reuse of the materials. Environmentally acceptable disposal of the surge arresters
and the accessories is possible in line with current legislation.
The following materials have been used to make up the device: Steel, copper, aluminium, PTFE, cast
resin or cast-resin-impregnated fabric, glass-fibre-reinforced plastics, polyurethane, rubbers for sealing, ceramics, electronic components and silicon rubber (VMQ), ceramics (porcelain, metal oxide).
The device can be recycled as mixed scrap, or, if it is dismantled as far as possible, in a more environmentally acceptable way as sorted scrap with a mixed-scrap residual portion. The arrester resistors
of metal oxide (MO) should be disposed of as industrial waste similar to domestic garbage (not as
building rubble).
In as-supplied-by-Siemens state, the device incorporates no hazardous substances in the sense of the
pertinent regulations in Germany. If the device is to be operated outside Germany, the locally applicable laws and regulations must be followed.
Local customer support offices will be able to answer any questions concerning disposal.
4
© Siemens AG • 10/2003