Megger DET14C Manuel utilisateur

DET14C & DET24C

Quick Start Guide

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 DET14C / DET24C is used. They must be observed during use.

■Do not leave the DET14C / DET24C 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 DET14C / DET24C or connect it to any external system

if it shows any visible signs of damage, malfunction or if it has been

stored in unfavourable conditions.

■Always keep body parts behind the tactile barrier on the handles of

the DET14C / DET24C.

■Always inspect the DET14C / DET24C prior to every use. Replace any

defective parts immediately or return the instrument to an authorised

service centre for repair.

■Do not use the DET14C / DET24C or connect it to any external system

if the casing is open or any parts of the case are missing.

■Do not use rechargeable batteries in this instrument.

■Always use caution when clamping the DET14C/DET24C on energised

electrical conductors.

■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.

■The DET14C / DET24C are not suitable for measuring AC currents in

multicore cables or DC currents.

■The instrument should not be used if any part of it is damaged.

■This instrument is not intrinsically safe and must not be used in

hazardous atmospheres.

■If this equipment is used in a manner not speciﬁed by the

manufacturer, the protection provided by the equipment may

be impaired.

■Rechargeable batteries should not be used in this instrument.

■Use extreme caution when using the instrument in proximity to bare

conductors. Avoid contact between the metal in the jaws and bare

conductors. A short circuit would create an arc-ﬂash explosion hazard.

OPERATION PRECAUTIONS

■It is important to keep the mating jaw surfaces clean as even small

amounts of contamination can cause measurement problems

■It is important to not damage the mating jaw surfaces. Take care when

clamping around electrodes as scratches on the mating surfaces will

cause measurement problems

■It is important to avoid impacts to the clamp head as any damage will

cause measurement problems

■Damage including scratches to the mating jaw surfaces is considered

misuse and will invalidate the warranty

Measurements

Resistance

Range : 50 mΩto 1500 Ω

Ground resistance measurement

Req = (R1 || R2 || R3 …|| Rn)

Rloop = Rg + Req

Current (I) induced by voltage (V) is therefore:

I = V/ (Rg + Req)

Measured value is Rg + Req.

Current

Range : 0.5 mA to 35 A

Insert batteries

This instrument is manufactured in the United Kingdom.

The company reserves the right to change the speciﬁcation or design without prior notice.

Megger is a registered trademark

Part No. 2001-644 - DET14C--DET24C--2001-644_QS_en-fr-de-es-nl_V04

m M

Test Equipment Depot - 800.517.8431

99 Washington Street,Melrose, MA 02176

TestEquipmentDepot.com

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