Megger SWG 1750 C User manual

Consultation with Megger
1
SWG 1750 C/CD
Surge Wave Generator
USER GUIDE
Issue: 03 (09/2015) - EN
Article number: 128314159

Consultation with Megger
2

Consultation with Megger
3
Consultation with Megger
The present system manual has been designed as an operating guide and for
reference. It is meant to answer your questions and solve your problems in as fast and
easy a way as possible. Please start with referring to this manual should any trouble
occur.
In doing so, make use of the table of contents and read the relevant paragraph with
great attention. Furthermore, check all terminals and connections of the instruments
involved.
Should any question remain unanswered or should you need the help of an authorized
service station, please contact:
Megger Limited Seba Dynatronic
Mess- und Ortungstechnik GmbH
Archcliffe Road
Kent CT17 9EN
T: [phone]
F: [phone]
E: [e-mail]
Dr.-Herbert-Iann-Str. 6
D - 96148 Baunach
T: [phone] – 0
F: [phone]
E: [e-mail]
Hagenuk KMT
Kabelmesstechnik GmbH
Megger USA
Röderaue 41
D - 01471 Radeburg / Dresden
T: [phone] – 0
F: [phone]
E: [e-mail]
Valley Forge Corporate Centre
2621 Van Buren Avenue
Norristown, PA 19403 USA
T: [phone]
F: [phone]
Megger
All rights reserved. No part of this handbook may be copied by photographic or other means unless Megger
have before-hand declared their consent in writing. The content of this handbook is subject to change without
notice. Megger cannot be made liable for technical or printing errors or shortcomings of this handbook.
Megger also disclaims all responsibility for damage resulting directly or indirectly from the delivery, supply, or
use of this matter.

Terms of Warranty
4
Terms of Warranty
Megger accept responsibility for a claim under warranty brought forward by a customer
for a product sold by Megger under the terms stated below.
Megger warrant that at the time of delivery Megger products are free from manufacturing
or material defects which might considerably reduce their value or usability. This
warranty does not apply to faults in the software supplied. During the period of warranty,
Megger agree to repair faulty parts or replace them with new parts or parts as new (with
the same usability and life as new parts) according to their choice.
This warranty does not cover wear parts, lamps, fuses, batteries and accumulators.
Megger reject all further claims under warranty, in particular those from consequential
damage. Each component and product replaced in accordance with this warranty
becomes the property of Megger.
All warranty claims versus Megger are hereby limited to a period of 12 months from the
date of delivery. Each component supplied by Megger within the context of warranty will
also be covered by this warranty for the remaining period of time but for 90 days at
least.
Each measure to remedy a claim under warranty shall exclusively be carried out by
Megger or an authorized service station.
This warranty does not apply to any fault or damage caused by exposing a product to
conditions not in accordance with this specification, by storing, transporting, or using it
improperly, or having it serviced or installed by a workshop not authorized by Megger.
All responsibility is disclaimed for damage due to wear, will of God, or connection to
foreign components.
For damage resulting from a violation of their duty to repair or re-supply items, Megger
can be made liable only in case of severe negligence or intention. Any liability for slight
negligence is disclaimed.
Since some states do not allow the exclusion or limitation of an implied warranty or of
consequential damage, the limitations of liability described above perhaps may not
apply to you.

Contents
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Contents
Consultation with Megger...............................................................................................3
Terms of Warranty ...........................................................................................................4
Contents ...........................................................................................................................5
1Safety Instructions ...........................................................................................6
1.1 General Notes ....................................................................................................6
1.2 General Safety Instructions and Warnings.........................................................7
2Technical Description ......................................................................................9
2.1 System Description ............................................................................................9
2.2 Technical Data .................................................................................................10
2.3 Controls ............................................................................................................11
2.4 Connection Components..................................................................................12
3Commissioning ..............................................................................................13
3.1 Electrical Connection........................................................................................13
3.2 Preselecting Surge Level .................................................................................15
3.3 Switching On ....................................................................................................16
4Operation ........................................................................................................17
4.1 Setting of the Surge Voltage ............................................................................17
4.2 Adjusting Surge Sequence...............................................................................19
4.3 Operating Modes..............................................................................................20
4.3.1 Pinpointing a Cable Fault (Continuous Surging) ..............................................20
4.3.2 Pre-locating a Cable Fault (Single Shot / Charging) ........................................21
5Concluding the Test.......................................................................................22
6Maintenance and Care ...................................................................................23

Safety Instructions
6
1Safety Instructions
1.1 General Notes
This manual contains basic instructions for the commissioning and operation of the
device / system. For this reason, it is important to ensure that the manual is always
available to the authorised and trained operator. He needs to read the manual
thoroughly. The manufacturer is not liable for damage to material or humans due to non-
observance of the instructions and safety advices provided by this manual.
Locally applying regulations have to be observed!
The following symbols may be present on the packaging material, on the instrument and
in the manual:
Symbol Description
WARNING
Indicates a potential danger of an electric shock that may result in fatal
or serious injury.
CAUTION
Caution (refer to accompanying manual for instructions)!
Indicates a potential danger that may lead to slight or moderate injury.
The notes contain important information and useful tips for using the
system. Failure to observe them can render the measurement results
useless.
It is important to observe the generally applicable electrical regulations of the country in
which the device will be installed and operated, as well as the current national accident
prevention regulations and internal company directives (work, operating and safety
regulations).
After working on the system, it must be voltage-free and secured against reconnection
as well as having been discharged, earthed and short-circuited.
Use genuine accessories to ensure system safety and reliable operation. The use of
other parts is not permitted and invalidates the warranty.
The system may only be installed and operated by an authorised electrician. DIN VDE
0104 (EN 50191), DIN VDE 0105 (EN 50110) and the German accident prevention
regulations (UVV) define an electrician as someone whose knowledge, experience and
familiarity with the applicable regulations enables him to recognise potential hazards.
Anyone else must be kept away!
Safety precautions
Labelling of safety
instructions
Working with products
from Megger
Operating staff

Safety Instructions
7
1.2 General Safety Instructions and Warnings
The operating safety is only guaranteed if the delivered system is used as intended (see
page 9). Incorrect use may result in danger to the operator, to the system and the
connected equipment.
The thresholds listed in the technical data may not be exceeded under any
circumstances.
The equipment may only be used when working properly. When irregularities or
malfunctions appear that cannot be solved consulting this manual, the equipment must
immediately be put out of operation and marked as not functional. In this case inform the
person in charge who should inform the Megger service to resolve the problem. The
instrument may only be operated when the malfunction is resolved.
Five safety rules
The five safety rules must always be followed when working with HV (High Voltage):
1. De-energise
2. Protect against re-energising
3. Confirm absence of voltage
4. Earth and short-circuit
5. Cover up or bar-off neighbouring energised parts
Using cardiac pacemaker
Physical processes during operation of high voltage may endanger persons
wearing a cardiac pacemaker when near these high voltage facilities.
Wear Ear Protection
Surge operation can cause high and sudden noise levels. It is strongly
recommended to wear hearing protection during surge operation. Keep in
mind that this will limit the operators awareness for ambient dangers.
Intended application
Behaviour at
malfunction of normal
operation

Safety Instructions
8
Fire fighting in electrical installations
•According to regulations, carbon dioxide (CO2) is required to be
used as extinguishing agent for fighting fire in electrical installations.
•Carbon dioxide is electrically non conductive and does not leave
residues. It is safe to be used in energized facilities as long as the
minimum distances are maintained. A CO2fire extinguisher must be
always available within electrical installations.
•If, contrary to the regulations, any other extinguishing agent is used
for fire fighting, this may lead to damage at the electrical installation.
Megger disclaims any liability for consequential damage.
Furthermore, when using a powder extinguisher near high-voltage
installations, there is a danger that the operator of the fire
extinguisher will get an electrical shock from a voltage arc-over (due
to the powder dust created).
•It is essential to observe the safety instruction on the extinguishing
agent.
•Applicable is DIN VDE 0132.
WARNING
Dangers when working with high voltage
Working on high voltage systems and equipment – especially in non-
stationary operation – requires particular care and safety-conscious action
on the part of test personnel. VDE regulations 0104 on setting up and
operating electrical test systems, as well as EN 50191 and national
standards and regulations must be strictly adhered to.
•The SWG 1750 C/CD generates a dangerous voltage of up to 32 kV.
•The test system may not be operated without supervision.
•Never fail to use safety equipment or put it out of operation.
•Operation requires minimum two people whereas the second person
must be able to activate the emergency switch in case of danger.
•To prevent dangerous charge accumulation, earth all metal parts in
the vicinity of the high voltage equipment.

Technical Description
9
2Technical Description
2.1 System Description
The SWG 1750 C/CD surge wave generator serves primarily for pinpoint location of
cable faults. For this purpose, the impulse capacitors are charged and then discharged
into the faulty cable which causes an arc at the weak point of the cable insulation (fault
position). The resulting flashover noise as well as the magnetic pulse propagate in the
ground and can be recorded, amplified and evaluated with a surge wave receiver (e.g.
digiPHONE+) on the surface. The distance to the fault can be calculated using either the
volume of the flashover noise or the time difference between the arrival of the magnetic
pulse and the flashover noise.
When combined with a reflectometer and an ARM filter in a test van environment, the
SWG 1750 C/CD can also be used for pre-location of cable faults by means of the arc
reflection measurement (ARM) and / or the current decoupling (ICE, Impulse Current
Equipment) method.
The scope of delivery of the system includes the following:
•Surge wave generator
•Auxialiary surge attachment (CD model only)
•HV connection cable, 4 m
•Mains connection lead, 2,5 m
•2 x earthing lead, 5 m
•Manual
If the following optional accessories are not contained in the scope of delivery, it can be
ordered from SebaKMT Sales:
Accessory Description Item number
Isolating Transformer GTV
2500VA
Protection against voltage spikes and
overvoltage which may occur in the
supply network
108300126
Intended use
Scope of delivery
Optional accessories

Technical Description
10
2.2 Technical Data
The surge wave generator has the following parameters:
Parameter Value
Surge voltage 0 … 8 kV / 16 kV / 32 kV
Output power
•C model
•CD model
1750 J
3500 J
Surge sequence Single shot or 2.5 s … 10 s
Maximum charging current
•at 0 … 8 kV
•at 0 … 16 kV
•at 0 … 32 kV
210 mA
105 mA
53 mA
Capacity
•at 0 … 8 kV
•at 0 … 16 kV
•at 0 … 32 kV
54.4 µF (C) or 109 µF (CD)
13.6 µF (C) or 27.2 µF (CD)
3.4 µF (C) or 6.8 µF (CD)
Power supply 230 VAC ±10%, 45 … 60 Hz (maximum surge
energy can be guaranteed only at 230 VAC)
Current consumption 6.5 A (average value)
Weight
•Basic unit 97 kg
•Auxialiary surge attachment
(CD version)
30 kg
Dimensions (W x D x H)
•Basic unit 520 x 430 x 630 mm
•Auxialiary surge attachment
(CD version)
520 x 270 x 410 mm
Operating temperature -20 °C … 40 °C
Storage temperature -40 °C … 70 °C
Relative humidity 93% at 30 °C
Protection class (according to
IEC 61140 (DIN VDE 0140-1))
I
Protection rating (according to
IEC 60529 (DIN VDE 0470-1))
IP20