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  9. Megger VCLAMP User manual

Megger VCLAMP User manual

VCLAMP USER GUIDE M
GSafety Warnings
These safety warnings are provided to ensure the safety of personnel and proper operation of
the instrument.
■Safety warnings and precautions must be read and understood before the VCLAMP is
used. They must be observed during use.
■Do not leave the VCLAMP connected to the system under test when not in use.
■Do not touch circuit connections and exposed metalwork of the installation or equipment
under test.
■Do not use the VCLAMP or connect it to any external system if it shows any visible signs of
damage or if it has been stored for prolonged periods in unfavourable conditions.
■Do not use the VCLAMP or connect it to any external system if the casing is open or any
parts of the case are missing.
■Do not use the VCLAMP or connect it to any external system if the VCLAMP lead is damaged
in any way.
■Do not use the VCLAMP on live electrical conductors.
■Always connect the VCLAMP to the DET instrument before clamping it around the item
being tested.
■Always inspect the DET instrument, VCLAMP and connection cable prior to every use.
Replace any defective parts immediately.
■Always use extreme caution when clamping around bare conductors: under fault conditions,
high voltages and currents may be present and may pose a shock hazard.
NOTE: THE INSTRUMENT MUST ONLY BE USED BY SUITABLY TRAINED AND
COMPETENT PERSONS.
Users of this equipment and/or their employers are reminded that National Health and Safety
Legislation requires them to carry out valid risk assessments of all electrical work so as to
identify potential sources of electrical danger and risk of electrical injury such as inadvertent
short circuits. Where the assessments show that the risk is significant then the use of fused
test leads may be appropriate.
The safety warnings provided in this document are indicative of safe practice and shall not be
considered exhaustive. Additionally, they are not intended to replace local safety procedures
where the instrument is being used.
Symbols used on the VCLAMP are:
GCaution: refer to accompanying notes
tEquipment protected throughout by Double Insulation (Class II)
cEquipment complies with current EU directives
Megger Limited T +44 (0)1 304 502101
Archcliffe Road, Dover F +44 (0)1 304 207342
Kent CT17 9EN E uksales@megger.com
England
Megger T +1 800 723 2861 (USA only)
4271 Bronze Way, Dallas, T +1 214 333 3201
Texas 75237-1019 F +1 214 331 7399
USA E ussales@megger.co
Megger T+33 (0)1.30.16.08.90
Z.A. Du Buisson de la Couldre F +33 (0)1.34.61.23.77
23 rue Eugène Henaff E infos@megger.com
78190 TRAPPES
France
Megger Pty Limited T +61 (0)2 9659 200Unit
26 9 Hudson Avenue F +61 (0)2 9659 2201
Castle Hill E ausales@megger.com
Sydney NSW 2125
Australia
Megger Limited T +1 416 298 9688 (Canada only)
110 Milner Avenue Unit 1 T+1 416 298 6770
Scarborough Ontario M1S 3R2 F +1 416 298 0848
Canada E casales@megger.com
Megger products are distributed in 146 countries worldwide.
This instrument is manufactured in the UK.
The company reserves the right to change the specification or design without prior notice.
Megger is a registered trademark
Part No. 6173-003_en_V01 Printed in England 0906
www.megger.com
M
PREPARATIONS FOR USE
1. Ensure that the VCLAMP jaw mating
surfaces are free of dust and
contamination and that they contact
completely when the VCLAMP is closed.
2. Currents carried by conductors in close
proximity to the VCLAMP may affect
calibration and reduce the accuracy of
measurements made.
OPERATION OF THE VCLAMP
Two-clamp stakeless measurement
1. Ensure the rotary selector switch is in the
position.
2. Connect the instrument as shown.
3. Close the ICLAMP around the conductor
under test.
4. Close the VCLAMP around the conductor
under test.
5. Ensure a minimum separation of 100 mm
(4 in) between the ICLAMP and VCLAMP.
6. Set the rotary selector switch to the
position.
7. Press and release the button [by
holding the button, the resistance
measurement will be continually
updated].
8. The instrument will perform pre-measure
ment checks, the status of which will be
indicated on the display.
9. The stakeless loop resistance measure-
ment will be displayed.
SPECIFICATIONS
Insulation: Double insulation
Voltage rating: 600V CAT III
Current rating: 1200A for 20 minutes
Electrical safety: EN61010-2-032
Ingress protection: IP40
Operating temperature:
-10°C to +50°C / 14°F to 122°F
0% to 85% RH at +35°C / 95°F
Storage temperature:
-20°C to +70°C / -4°F to 158°F
Jaw opening: 57mm maximum (2.3in)
Maximum conductor size: 52mm / 2.1in
Dimensions: 111mm x 216mm x 45mm
(4.4in x 8.5in x 1.8in)
Weight: 0.5kg approximately (1.2lb)
EMC
EN 50081-1 Class B
EN 50082-2
TEST
TEST
OFF
MANUEL UTILISATEUR - VCLAMP M
GConsignes de sécurité
Ces consignes de sécurité garantissent la sécurité du personnel et le bon fonctionnement de
l'appareil.
■Lire attentivement les consignes de sécurité avant d'utiliser la pince VCLAMP. Ces
consignes doivent être respectées lors de toute utilisation.
■Ne pas laisser la pince VCLAMP connectée au circuit à tester quand elle n'est pas utilisée.
■Ne pas toucher les connexions des circuits et les parties métalliques exposées des
installations ou équipement en cours de test.
■La pince VCLAMP ne doit pas être utilisée ou connectée sur un circuit externe si elle
semble endommagée ou si elle a longtemps été stockée dans de mauvaises conditions.
■La pince VCLAMP ne doit pas être utilisée ou connectée sur un circuit externe si le
boîtier est ouvert ou si des parties du boîtier sont manquantes.
■La pince VCLAMP ne doit pas être utilisée ou connectée sur un circuit externe si son
câble est endommagé.
■Ne pas utiliser la pince VCLAMP sur des conducteurs électriques sous tension.
■Toujours connecter, la pince VCLAMP sur le DET avant de la refermer autour de l'élément
àtester.
■Avant toute utilisation, vérifier toujours le DET, la pince VCLAMP et le câble de
connexion. Remplacer immédiatement toute pièce défectueuse.
■Prendre toujours toutes les précautions requises lors de l'utilisation de la pince autour de
conducteurs nus : en cas d'installation défectueuse, ils peuvent être le siège de tensions ou
courants potentiellement élevés pouvant entraîner des risques de choc électrique.
NOTA : CES APPAREILS NE DOIVENT ÊTRE UTILISÉS QUE PAR DES PERSONNES
COMPÉTENTES ET SPÉCIALEMENT FORMÉES.
La législation en vigueur sur la sécurité et la santé impose aux utilisateurs de ces équipements
ainsi qu'à leurs employeurs d'effectuer une évaluation des risques sur tous les travaux élec-
triques, afin d'identifier les sources potentielles de danger et les risques d'accidents tels que les
courts-circuits. Si cette évaluation révèle un niveau de risque significatif, l'utilisation de câbles de
tests protégés par fusibles peut s'avérer nécessaire.
Les consignes de sécurité mentionnées dans ce document ne sont qu'une indication des pra-
tiques recommandées et ne sont en aucun cas exhaustives. De plus, elles ne remplacent pas les
procédures de sécurité en vigueur sur les sites où l'appareil est utilisé.
Symboles utilisés sur la pince VCLAMP :
GAttention : consulter les notes d'accompagnement
tÉquipement entièrement protégé par une double isolation (Classe II)
cÉquipement conforme aux directives européennes applicables

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