DRIESCHER B843 Service manual

B843
ELEKTROTECHNISCHE WERKE
FRITZ DRIESCHER & SÖHNE GMBH
D-85366 MOOSBURG • PHONE [phone] • FAX [phone]
http://www.driescher.de [e-mail]
Mounting and operating
instructions for
DRIESCHER
Low voltage -
fused-
switch disconnector
system 403
Rated current 400 up to 1445 A

Low voltage-fused-switch disconnector system 403
B843
Table of Contents
1 Introduction 4
1.1 Notes on this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1.1 General note 4
1.1.2 Use of symbols / legend 4
1.2 Product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2.1 General 4
1.2.2 Operating conditions 5
1.2.3 Scope of delivery 5
1.2.4 Assemblies and functional elements 403 6
1.2.5 Operating elements 7
2 Safety 8
2.1 Intended use / guarantee . . . . . . . . . . . . . . 8
2.2 Personnel selection and necessary qualifications . . . . . . . . . . . . . . . . 8
2.3 Organisational safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 Dangers caused by the switching device . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4.1 Danger due to moving parts 9
2.4.2 Danger due to electrical current/ arc 9
2.5 Safety installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 ASSEMBLY 10
3.1 Transporting the switching device. . . . . . . . . . . . . . . . . . . . . 10
3.2 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3 Assembly on the frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.4 Assembly on a busbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.5 Connecting the switch cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.6 Functional check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.7 Insert fuses - Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.8 Disassembly /removal low voltage-fused-switch disconnector system 403 . . . . . . 14
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Table of contents
4 Operation 14
4.1 Work station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2 Visual check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2.1 Commissioning 15
4.2.2 Operation 15
4.2.3 Temporary decommissioning 15
4.2.4 Decommissioning 15
5 TECHNICAL DATA 16
5.1 Service address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6 Disposal 16
Low voltage-fused-switch disconnector system 403
B843
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CE marking
The DRIESCHER low-voltage products are subject to the CE marking requirement in connec-
tion with the Low Voltage Directive 2006/95/EC.
The CE mark is applied to the individual packaging units.
In doing so, DRIESCHER confirms that the products comply with the applicable regulations.
The corresponding declarations of conformity are stored with DRIESCHER.

Low voltage-fused-switch disconnector system 403 Introduction
B843
4 / 16
1 Introduction
Thank you for choosing one of our products. We hope it gives you many hours of successful and pro-
blem-free operation.
The low-voltage-fused switch disconnector system 403 has been specially designed and manufactu-
red to meet your requirements.
Do you have any questions you would like to ask us? We look forward to hearing from you.
1.1 Notes on this manual
1.1.1 General note
This operating and maintenance manual contains all information and descriptions required to operate
the Earthing switch. This document was created with the utmost care. Any suggestions or comments
would be gratefully received.
To make the instructions in this manual easier to follow, the descriptions are accompanied by figures
and schematic diagrams of the switching device or its assemblies.
1.1.2 Use of symbols / legend
The following symbols are used in this manual in addition to the warning notices outlined in the chapter
Safety:
WARNING:Warns of danger to people. Failure to comply with the warning indicated
by this symbol will result in severe injuries.
Warns against damage to property and personal injury caused by mechanical com
ponents. Failure to comply with the indications marked with this symbol will result in
serious injuries.
Warns against damage to property and personal injury caused by electrical voltage or
arc. Failure to comply with the indications marked with this symbol will result in serious
injuries.
Caution: Failure to comply with the warning indicated by this symbol could result in
injuries.
Attention: Warns of possible material damageor malfunctions. Technical information
requiring particular attention.

Low voltage-fused-switch disconnector system 403 Product description
B843
1.2.3 Scope of delievery
Low voltage-fused-switch disconnector system with sliders
cable insulating cover (L) (optional)
1.2.2 Operating conditions
The information is valid for the described installation situation (vertical installation on horizontal busbar
system) and for the ambient conditions "interior" according to the standards IEC/EN 61439-1/2/3/5.
5 / 16
1.2 Product description
1.2.1 General
The low voltage-fused-switch disconnector system 403 has been specially designed and manufactu-
red to meet the requirements of our customers. They have been in trouble-free use for years.
The correct choice of busbars and components is the responsibility of the operator and operator of the
new standard IEC or DIN EN 61439 describes as a successor standard to DIN EN 60439 the design
and inspection specifications for low-voltage switchgear combinations, where planning, construction
requirements and the required type-approvals are prescribed. In order to safely eliminate hazards for
people and goods when handling electrical energy, the expert handling of the equipment and compli-
ance with the applicable regulations is generally required.
Installation and maintenance work, modifications and retrofitting may only be carried out by qualified
personnel in compliance with the general installation and safety regulations for work on power plants
(including 5 safety rules). The state of the technology and the impairments of the components among
themselves must be taken into account. In general, it is important to ensure that all touchable compo-
nents are switched off without voltage during maintenance measures.
In addition, it is necessary to ensure that the screw connections are made with the prescribed tighte-
ning torques, that the respective fittings are used and that the elements for contact protection are fully
available
The low voltage-fused-switch disconnector system shall be used and operated according to the inten-
ded use.
We would like to point out that the technical description in the product brochure as well as the assem-
bly instructions must always be observed and stored for maintenance work, modifications and retrofits.
Modifications for further development and technical progress are reserved.

A Low voltage-fused-switch disconnector system 403
B Slider 1-pole
C Low-voltage high-rupturing-capacity fuse DIN 43620
D Indicator plate HRC fuse dimension
E Latching lever for the supports
F The supports HRC fuse
G Marking plate
H Switchroom with guide for slider
I Type plate
J Cable connection bar bottom L1, L2, L3
J1 Cable connection bar top L1, L2, L3
K Insulating baffle plate
L Cable insulating cover
M Inspection holes
N Flat spring
O Busbar contact
P Mounting brackets for frame mounting
Q Slider 3-pole
R Slider 3-pole with operating handle
S Terminal screw M12, caulked
6 / 16
Low voltage-fused-switch disconnector system 403 Product description
B843
1.2.4 Assemblies and functional elements 403
B
G
D
H
I
J
K
A
M
L2
L1
L3
L
Q
R
S
N
CD
O
P
P
O
O
E
F
Connection above
Connection lower
Pic. 1: Low voltage-fused-switch disconnector system 403, right cross section
Pic. 2: Low voltage-fused-switch disconnector system 403 ,
left 3-pole, right 3-pole with operating handle switchable
J1
L1
L2 L3
K

7 / 16
Low voltage-fused-switch disconnector system 403 Product description
B843
1.2.5 Operating elements
Low voltage-fused-switch disconnector system 403 - 1-pole, 3-pole and 3-pole with operating handle
switchable. Slider (B) with recessed grip above and down with inserted low-voltage high-rupturing-
capacity fuse (C).
1-pole switchable 3-pole switchable
with operating handle
3-pole switchable
Pic. 3: Operating elements
H
R
Q
B
C
B Slider 1-pole
C Low-voltage high-rupturing-capacity fuse DIN 43620
H Switchroom with guide for slider
Q Slider 3-pole
R Slider 3-pole with operating handle

Low voltage-fused-switch disconnector system 403 Safety
B843
2 Safety
2.1 Intended use / guarantee
The low voltage fused disconnector sysytem is intended for use under the conditions outlined in the
section Technical data, on Page 16.
Any use other than those outlined in this section is classed as an unintended use.
Any of the following carried out without express written approval from the manufacturer
• alterations or extensions
• using non-genuine spare parts
• repairs carried out by companies or persons not authorised by the manufacturer
could result in the guarantee becoming null and void.
2.2 Personnel selection and necessary qualifications
Persons working with the switching device must
• be at least 18 years of age.
• have received sufficient training for the relevant tasks.
• be familiar and comply with the current valid rules and safety regulations.
The owner must ensure that only authorised personnel work on the switching device.
Personnel learning to use or being introduced to the device, or operating the device as part of training
may only work on the switching device when supervised by an experienced member of staff!
All work on the switching device may only be carried out by trained specialist personnel (DIN VDE
0105-100) and in compliance with all valid regulations specified in the accident prevention regulations
(UVVen).
2.3 Organisational safety
The owner must ensure that this operating and maintenance manual is always in the immediate vici-
nity of the persons responsible for assembling, operating and carrying out maintenance work on the
switching device
8 / 16

9 / 16
Low voltage-fused-switch disconnector system 403 Safety
B843
2.4 Dangers caused by the switching device
The possible danger sources of the switching device are outlined below. Thorough introductory ses-
sions and training for operators help minimise the danger to both people and equipment.
Carrying out regular checks on the knowledge levels and compliance with safety regulations contribu-
tes significantly to accident-free operation over the long term.
2.4.1 Danger due to moving parts
WARNING: The switching device has moving components, some of which can be moved remotely
(electrically and/or mechanically) with significant force. Touching these parts poses a risk of personal
injury or material damage.
Before starting work, it is important to ensure that there is no danger from moving parts.
2.4.2 Danger due to electrical current / arc
WARNING: When operating electrical switching devices, components in the immediate vicinity are
supplied with dangerous current. Touching these parts poses a risk of personal injury or material
damage.
In the case of a fault arc, extreme hazards arise (high thermal energy, pressure wave, electromagnetic
radiation, toxic / hot gases and particles).
The danger zone of the switching device may only be accessed by persons who are aware of the elec-
trical dangers thanks to specialist training, knowledge and experience and can implement the neces-
sary occupational health and safety measures.
Other people may only enter the danger zone when accompanied by the persons listed above.
2.5 Safety installations
For the protection of both personnel and the product, safety installations help prevent accidents or
material damage caused by moving parts and assemblies.
Safety installations are Insulating baffle plate (K), Cable insulating cover (L) and Flat spring (N).
The operator must ensure that trained personnel
• check all safety installations regularly.
• remove any problems on the safety installations immediately.
• secure the switching device against being switched on if not all safety installations are present and
working.

Low voltage-fused-switch disconnector system 403 Assembly
B843
3 Assembly
3.1 Transport and storage of the low voltage-fused-switch disconnector system 403
For transport and assembly, only mount the low voltage-fused-
switch disconector system 403 from the outside, do not grip it into
the system from the back, bottom or top.
Protect the low voltage-fused-switch disconnector system from
damage, moisture and contamination until it is installed.
3.2 General
The low voltage-fused-switch disconnector system 403 must be installed in a suitable housing and
must be protected against contamination. The installation position is vertical. The installation of the low
voltage-fused-switch disconnector system 403 on under-voltage busbars is carried out with a insula-
ting socket wrench tested in accordance with EN 60900 (DIN VDE 0682 Part 201) or EN 61477 (DIN
VDE 0682 Part 130).
For live-line working, the provisions of DIN VDE 0105 Part 1 must be complied with. Live-line
working may only be carried out by specially trained specialists.
Please refer to the Safety Tools instructions for use (Order No. 3-81301043).
Insulating socket wrench scope of delievery:
Pic. 4
10 / 16
Top side
Back side
Bottom side
Pos. Part-No. Length / Socket wrench Description
1a 2-840 31005 300 mm, Set Pos. 2 - 5
Ratchet wrench, fully insulated according to
VDE, scoop-proof up to 1000 V according to
097429 for nut, detent edged ring and washer
1b 2-840 31006 300 mm, Set Pos. 2 - 4, 6
Ratchet wrench, fully insulated according to
VDE, scoop-proof up to 1000 V according to
097429-002 for nut and tension washer
22-319 00013 1/2 “
Ratchet wrench for right and left batter, accor-
ding to DIN 7449 1/2 “, isolated,
Observe the instruction manual ratchet!
Order-no.:3-81301043
32-611 37790 250 mm, 1/2 “ Extension DIN 7449 1/2 “, isolated,
42-319 0023 SW 13, 1/2 “ Socket wrench SW 13 (M8) 1/2 “,
isolated, for assembly on the frame
52-840 31001 SW 19, 1/2 “
universal joint SW 19 (M12) 1/2 “,
isolated, for busbar mounting with the
supports for nut, detent edged ring and washer M12
62-840 31002 SW 19, 1/2 “
universal joint SW 19 (M12) 1/2 “,
isolated, for busbar mounting with
the supports for nut und tension washer M12