WIKA GDM-63 Manuel utilisateur

Operating instructions

Betriebsanleitung

Gasdichtewächter, Typ GDM-63

Gas density monitor

Gas density monitor, model GDM-63

14502554.01 07/2021 EN/DE

WIKA operating instructions gas density monitor model GDM-63

WIKA®is a registered trademark in various countries.

WIKA®ist eine geschützte Marke in verschiedenen Ländern.

Prior to starting any work, read the operating instructions!

Keep for later use!

Vor Beginn aller Arbeiten Betriebsanleitung lesen!

Zum späteren Gebrauch aufbewahren!

Betriebsanleitung Typ GDM-63 Seite 23 - 42

Operating instructions model GDM-63 Page 3 - 22

3WIKA operating instructions gas density monitor model GDM-63

14502554.01 07/2021 EN/DE

Contents

1. General information 4

2. Design and function 5

3. Safety 6

4. Transport, packaging and storage 11

5. Commissioning, operation 12

6. Faults 15

7. Maintenance, cleaning and recalibration 16

8. Dismounting, return and disposal 18

9. Specifications 19

10. Accessories 21

Contents

4WIKA operating instructions gas density monitor model GDM-63

14502554.01 07/2021 EN/DE

1. General information

■The instrument described in the operating instructions has been designed and

manufactured using state-of-the-art technology. All components are subject to

stringent quality and environmental criteria during production. Our management

systems are certified to ISO 9001 and ISO 14001.

■These operating instructions contain important information on handling the

instrument. Working safely requires that all safety instructions and work instructions

are observed.

■Observe the relevant local accident prevention regulations and general safety

regulations for the instrument's range of use.

■The operating instructions are part of the product and must be kept in the immediate

vicinity of the instrument and readily accessible to skilled personnel at any time. Pass

the operating instructions on to the next operator or owner of the instrument.

■Skilled personnel must have carefully read and understood the operating instructions

prior to beginning any work.

■The general terms and conditions contained in the sales documentation shall apply.

■Subject to technical modifications.

■Further information:

- Internet address: www.wika.de / www.wika.com

- Relevant data sheets:

SP 60.70 Model GDM-63

SP 61.16 Model GLTC-CV

- Application consultant: Tel.: +49 9372 132-0

Fax: +49 9372 132-406

info@wika.com

1. General information

5WIKA operating instructions gas density monitor model GDM-63

14502554.01 07/2021 EN/DE

2. Design and function

2.1 Overview

Product label

Electrical connection

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

2.2 Description

Switch contacts

The switch contacts permanently installed in the gas density monitor close or open at

set limit values, depending on the switching function. Switching functions are: Normally

closed, normally open, change-over contact.

The magnetic snap-action contacts are control switches which open or close connected

electric circuits via a contact arm which is moved by the instrument pointer.

Optional recalibration valve

With regard to switchgear safety, asset protection and environmental protection, it is

common to perform functional checks of the measuring instruments on a regular basis.

Article 5 of EU regulation No. 517/2014 on fluorinated greenhouse gases, provides

for checking of the leakage detection system at least every 6 years if it contains

more than 22 kg SF₆ gas and the plant was commissioned after 01 January 2017.

With the help of the optional, permanently welded recalibration valve, the gas density

monitor can be shut off from the process and recalibrated without having to disassemble

it. This not only reduces maintenance time but also minimises the risks of SF₆ gas

emissions and potential leakages during recommissioning.

When connecting a test instrument (e.g. model ACS-10 or model BCS-10) to the

recalibration valve, the gas density monitor is automatically disconnected from the gas

compartment and a recalibration can be performed.The test instrument can then be

disconnected from the recalibration valve and the connection to the gas compartment is

re-established automatically.

The recalibration valve is also available as a retrofit solution for gas density monitors

and other leakage detection systems already installed in the field, as model GLTC-CV,

and can be mounted between the gas compartment and gas density monitor.

2. Design and function

6WIKA operating instructions gas density monitor model GDM-63

14502554.01 07/2021 EN/DE

2.3 Scope of delivery

Cross-check scope of delivery with delivery note.

3. Safety

3.1 Explanation of symbols

WARNING!

... indicates a potentially dangerous situation that can result in serious

injury or death, if not avoided.

CAUTION!

... indicates a potentially dangerous situation that can result in light injuries

or damage to property or the environment, if not avoided.

Information

... points out useful tips, recommendations and information for efficient

and trouble-free operation.

3.2 Intended use

Wherever the gas density of SF₆ gas has to be indicated locally and, at the same time,

circuits need to be switched, the model GDM-63 gas density monitor finds its use.

Gas density monitors are modified contact pressure gauges, specially developed for the

use of SF₆ gas. Temperature influences acting on the enclosed SF₆ gas are compensated

by a compensation system.

The gas density monitors are specially designed for the respective application in switchgear

(pure SF₆ gas, gas mixtures, calibration pressure, switch points ...). Before use, check

whether this instrument is suitable for the intended application.

The insulation values (air gaps and creepage distances) are sized for the following

ambient conditions in accordance with EN 61010-1:2010:

■Altitude up to 2,000 m

■Overvoltage category II

■Pollution degree 2

■Relative humidity: 0 ... 90 % non-condensing (per DIN 40040)

■The strength of the measuring instrument (enclosing non-metal parts) was tested

with a reduced impact energy of 2 J corresponding to IK07 per EN 61010-1:2010.

The IK code is included on the respective product label.

Only use the instrument in applications that lie within its technical performance limits

(e.g. max. ambient temperature, material compatibility, ...).

→ For performance limits see chapter 9 “Specifications”.

2. Design and function / 3. Safety

7WIKA operating instructions gas density monitor model GDM-63

14502554.01 07/2021 EN/DE

This instrument is not permitted to be used in hazardous areas!

The instrument has been designed and built solely for the intended use described here,

and may only be used accordingly.

The technical specifications contained in these operating instructions must be

observed. Improper handling or operation of the instrument outside of its technical

specifications requires the instrument to be taken out of service immediately and

inspected by an authorised WIKA service engineer.

The manufacturer shall not be liable for claims of any type based on operation contrary

to the intended use.

3.3 Improper use

WARNING!

Injuries through improper use

Improper use of the instrument can lead to hazardous situations and

injuries.

▶Refrain from unauthorised modifications to the instrument.

▶Do not use the instrument within hazardous areas.

Any use beyond or different to the intended use is considered as improper use.

3.4 Responsibility of the operator

The instrument is used in the industrial sector. The operator is therefore responsible for

legal obligations regarding safety at work.

The safety instructions within these operating instructions, as well as the safety, accident

prevention and environmental protection regulations for the application area must be

maintained.

The operator is obliged to maintain the product label in a legible condition.

To ensure safe working on the instrument, the operating company must ensure

■that suitable first-aid equipment is available and aid is provided whenever required.

■that the operating personnel are regularly instructed in all topics regarding work safety,

first aid and environmental protection and know the operating instructions and, in

particular, the safety instructions contained therein.

■that the instrument is suitable for the particular application in accordance with its

intended use.

■that personal protective equipment is available.

3. Safety

8WIKA operating instructions gas density monitor model GDM-63

14502554.01 07/2021 EN/DE

3.5 Personnel qualification

WARNING!

Risk of injury should qualification be insufficient

Improper handling can result in considerable injury and damage to

property.

▶The activities described in these operating instructions may only be carried

out by skilled personnel who have the qualifications described below.

Skilled personnel

Skilled personnel, authorised by the operator, are understood to be personnel

who, based on their technical training, knowledge of measurement and control

technology and on their experience and knowledge of country-specific regulations,

current standards and directives, are capable of carrying out the work described and

independently recognising potential hazards.

Specically when using SF₆ gas

The plant operator must ensure that the handling of SF6gas is only carried out by

a qualified company or by qualified persons who have been specially trained in

accordance with IEC 62271-4 or IEC 60480, section 10.3.1.

3.6 Personal protective equipment

The personal protective equipment is designed to protect the skilled personnel from

hazards that could impair their safety or health during work. When carrying out the

various tasks on and with the instrument, the skilled personnel must wear personal

protective equipment.

Follow the instructions displayed in the work area regarding personal protective

equipment!

The requisite personal protective equipment must be provided by the operating

company.

Safety goggles in accordance with EN 166, class 2, mechanical

strength class S

Safety goggles must be worn during the entire period when working on

hoses or gas containers (e.g. gas cylinders, tanks).

The safety goggles protect the eyes from any flying particles, escaping

gas and liquid splashes.

Protective gloves against heat in accordance with EN ISO 13732-1

and against cold in accordance with EN ISO 13732-3

The protective gloves must be worn over the entire period when working

on hoses, gas containers (e.g. gas cylinders, tanks) or components which

heat up to over 60 °C [140 °F].

3. Safety

9WIKA operating instructions gas density monitor model GDM-63

14502554.01 07/2021 EN/DE

3.7 Handling of insulating gases and gas mixtures

SF₆ gas is a greenhouse gas which is listed in the Kyoto Protocol. SF₆ gas must not be

released into the atmosphere, but must be collected in suitable containers.

Properties of insulating gases

■Colourless and odourless

■Chemically neutral

■Inert

■Not flammable

■Heavier than air

■No toxicity

■No damage to the ozone layer

Detailed information is given in IEC 60376 and IEC 61634.

Danger of suocation caused by insulating gases and gas mixtures

High concentrations of gases can lead to asphyxiation, since breathable air is displaced

from the lungs with the inhalation of gas.

Since SF₆ gas is heavier than air, it collects, especially, at ground level or lower-lying

rooms below the reference level (e.g. cellars). This is particularly dangerous since SF6

gas is colourless and odourless and thus may be imperceptible to people.

3.8 Danger caused by decomposition products

Insulating gas in electrical systems may contain decomposition products generated by

electric arcs:

■Gaseous sulphur fluorides

■Sulphur hexafluorides

■Solid and atomized metal fluorides, metal sulphides, metal oxides

■Hydrogen fluoride

■Sulphur dioxide

Decomposition products can be harmful to health.

■They can cause poisoning by inhalation, ingestion or contact with the skin.

■They may be irritating to the eyes, the respiratory system or the skin and burn them.

■Inhalation of large quantities may damage the lungs.

Observe the following safety instructions in order to avoid danger from insulating gas:

■Wear personal protective equipment.

■Read the material safety data sheet of the gas supplier.

■With large leakage, evacuate the area quickly.

■Ensure good ventilation.

■Ensure the leak tightness of the equipment with a leak detector (e.g. model GIR-10).

3. Safety

10 WIKA operating instructions gas density monitor model GDM-63

14502554.01 07/2021 EN/DE

3. Safety

3.9 Applicable standards and directives

Installation, assembly, commissioning:

■BGI 753 (SF₆ plants and equipment in Germany)

■IEC 62271-4 (Handling of SF₆ gas)

■IEC 60376 (New SF₆ gas, technical grade SF₆ gas)

■IEC 60480 (Used SF₆ gas)

■CIGRE report 276, 2005 (Practical SF₆ gas handling instructions)

Leakages during operation:

■IEC 60376 (New SF₆ gas, technical grade SF₆ gas)

■IEC 60480 (Used SF₆ gas)

■CIGRE 2002 (“SF₆ gas in the electrical industry”)

Repair work and maintenance:

■IEC 62271-4 (Use and handling of SF₆ gas in high-voltage switchgear and controlgear)

■CIGRE 1991 (Handling of SF₆ gas)

■CIGRE report 276, 2005 (Practical SF₆ gashandling instructions)

Information

SF6is a colourless and odourless, chemically neutral, inert and

non-ammable gas which is approx. ve times heavier than air, non-toxic

and not harmful to the ozone layer.

Detailed information is given in IEC 60376 and IEC 61634.

3.10 Labelling, safety marks

Product label (example)

Model designation

Model designation of the switch contact

Switching thresholds

Date of manufacture

P# product number

Pin assignment

Schaltzustand bei Skalenanfangswert / Status of switch at minimum scale value

WIKA Alexander Wiegand SE & Co. KG, 63911 Klingenberg

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