Megger SWG 1750 C Manuale utente

Consultation with Megger

SWG 1750 C/CD

Surge Wave Generator

USER GUIDE

Issue: 03 (09/2015) - EN

Article number: 128314159

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: +44 1304 502100

F: +44 1304 207342

E: uksales@megger.com

Dr.-Herbert-Iann-Str. 6

D - 96148 Baunach

T: +49 9544 68 – 0

F: +49 9544 22 73

E: sales@sebakmt.com

Hagenuk KMT

Kabelmesstechnik GmbH

Megger USA

Röderaue 41

D - 01471 Radeburg / Dresden

T: +49 35208 84 – 0

F: +49 35208 84 249

E: sales@sebakmt.com

Valley Forge Corporate Centre

2621 Van Buren Avenue

Norristown, PA 19403 USA

T: +1 610 676 8500

F: +1 610 676 8610

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

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

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

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

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

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

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

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))

Protection rating (according to

IEC 60529 (DIN VDE 0470-1))

IP20

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