SGC DF-2 Manuel utilisateur
MEDIUM VOLTAGE SWITCHGEAR
THE MODULAR CONCEPT
Extract installation manual:
Gland plates and cable connections
THE SPECIALIST IN MEDIUM VOLTAGE SWITCHGEAR
SGC nv - SwitchGear Company - Moorstraat 24 - B-9850 Nevele BELGIUM
Tel: +32 (0)9/321.91.12 - Fax: +32 (0)9/321.91.13 - e-mail: info@switchgearcompany.be - www.switchgearcompany.be
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© 2020 SwitchGear Company nv.
All rights reserved.
The information provided may not be reproduced and/or published in any way and by any means (electronic or
mechanical), without the prior, explicit written authorisation of SwitchGear Company nv
The information provided is based on general data concerning the construction known at the time of publication, material
qualities and working methods, so that the right to make changes is reserved.
The information given is applicable to the standard version of the DF-2 Medium Voltage Switchgear. Therefore
SwitchGear Company nv. cannot be held liable for any damage resulting from specifications that differ from the standard
version of the DF-2 Medium Voltage Switchgear.
The available information has been assembled with the greatest possible care but SwitchGear Company nv. cannot be
held liable for any mistakes in the information or the consequences thereof.
The user names, trade names, trademarks, etc, used by SwitchGear Company nv. in accordance with the legislation
concerning the protection of trademarks cannot be considered to be free.
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CONTENTS
Contents...................................................................................................... 1-2
Preface ........................................................................................................ 1-3
This document ........................................................................................................................ 1-3
Pictograms and safety symbols in and on the medium voltage switchgear ............................ 1-3
Pictograms in the documentation ........................................................................................... 1-3
Related documentation ........................................................................................................... 1-4
1 Assembly of the floor pans – cable connection ................................ 1-5
1.1 Assembly instructions for connecting single phase cables ................................... 1-6
1.1.1 Preparations ......................................................................................................... 1-6
1.1.2 DF-A / DF-P .......................................................................................................... 1-6
1.1.3 DF-D and DF-D/EDN ............................................................................................ 1-9
1.2 Assembly instructions for connecting parallel cables ......................................... 1-10
1.2.1 Preparations ....................................................................................................... 1-10
1.2.2 DF-D and DF-D/EDN type 800A/1250A ............................................................. 1-10
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PREFACE
This document
This document is intended as a reference for qualified and trained operators to transport,
install, use and maintain the medium voltage switchgear in a safe and economic way.
In this document the definition “medium voltage switchgear” is used to indicate a random –
but in actual practice existing – combination of DF-2 cubicles that, connected, form a
customer-specific transformation or distribution switchgear. For details, see “General
description”.
The chapters and sections are numbered. The page numbering (Form of the chapter
number and the page number) and the document code can be found at the bottom of each
page.
In the documentation the words “left”, “right”, “front” and “behind” are used to indicate a
specific part of the medium voltage switchgear. The starting point is always the position of
the operator, standing in front side of the switchgear.
Pictograms and safety symbols in and on the medium voltage
switchgear
Depending on the version, the following pictogram is used on the medium voltage
switchgear:
WARNING
High Voltage Danger
Access to the particular cubicle is only allowed after the cubicle itself, the next
and the previous cubicle are voltage-free.
Pictograms in the documentation
In the user’s manual of the medium voltage switchgear, the following pictograms are used:
CAUTION
Procedures that can – when not carried out with the necessary care - result in
damage to the medium voltage switchgear, the surrounding area or the
environment.
WARNING
High Voltage Danger
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CAUTION
Clamping danger
Notes, suggestions and advices
Make the cubicle in question, the next one and the previous cubicle voltage-free,
before carrying out the work described.
Open the load break switch as well as the earthing switch before carrying out the
work described.
Consult the indicated information sources first.
Protect the medium voltage switchgear from water or damp.
Related documentation
The following technical documentation is available for the medium voltage switchgear:
− Spare-parts list (AG608301)
− Technical Brochure (AG601301)
− Transport Manual
− Maintenance Manual
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1 ASSEMBLY OF THE FLOOR PANS – CABLE CONNECTION
Considering the fact that when installing the cubicles, the assembly of the floor pans and
the connection of the cables happens almost simultaneously, the descriptions of these
actions are combined.
The following applies in all circumstances:
A standard connection is possible up to 400 mm² for a single core cable per
phase.
Upon request, single core cables up to 630 mm² or 2 parallel cables up to
630mm² per phase can be connected to the DF-2 switchgear.
Connection of the cables is restricted to trained, qualified and authorised
personnel in accordance with the guideline mentioned in the installation manual
and using exclusively the materials supplied by SGC nv.
The floor pans and cable grommets should be installed in accordance with the
below mentioned guidelines and in accordance with the state of art closing off all
openings, prior to placing the switchgear into service.
The cable clamps should be installed in accordance with the below mentioned
guidelines and in accordance with the state of art to fulfil its function as strain
relief, prior to placing the switchgear into service.
Trifurcation of 3-core cable should be done outside the switchgear and cables
must never cross inside the cubicle. For the connection of the cables, a torque
of 60Nm needs to be respected at all times.
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1.1 Assembly instructions for connecting single phase cables
1.1.1 Preparations
Ensure that the switchgear in question is entirely voltage-free and earthed.
1.1.2 DF-A / DF-P
• Mount the first floor pan at the rear of the switchgear (Figure 1A) on both sides to the
frame, using the flange bolt (Figure 1B), the serrated spring washer (Figure 1C), and
the bolt (Figure 1D).
• Disassemble the cable bracket (Figure 2 B).
Figure 1
Figure 2
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• Make a circular incisions in the grommet in
accordance with the cable section to be connected
(Figure 3A). Slide the grommet over the cable at
the right height.
• Install the cable over the M12 bolt against the
connection terminal. Place the washer (Figure 3B),
disc spring (Figure 3C) and nut (Figure 3D).
Figure 3
• Connect the earthing cable (Figure 4B) to the
earthing strip (Figure 4D) using the bolt (Figure
4C).
Figure 4
• Assemble the cable clamp (Figure 5A) on the cable support and fix it into place using
hexagonal tap bolts (Figure 5C), the spring washers (Figure 5B) and the nut (Figure
5D).
• Place the second bottom plate (Figure 6A) in the cubicle to cause the grommet to be
fixed into place by both bottom plates.
• Secure the bottom plate on both sides to the frame using a flange bolt (Figure 6B), a
serrated spring washer (Figure 6C) and a nut (Figure 6D).
Figure 5
Figure 6
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• Connect the cable securely with a torque of 60Nm and pay special attention to:
Connection between cable lug and contact
Strain relief of the (capacitive) isolator
Accurate cable clamping using cable clamps
• Fix the cable clamps using a torque of 25 Nm.
• Continue according to these instructions, working towards the door opening in a
systematic sequence.
•
Since the assembly of the cables and bottom plates occurs in an analogous fashion for
DF-P cubicles, no further details are provided here. By request, a more exhaustive
description can be obtained.
Autres manuels pour DF-2
2
Table des matières
