Manual Gossen Metrawatt METRAHIT ENERGY (page 8 of 98) (English)

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8 GMC-I Messtechnik GmbH

Safety Precautions

• Maximum permissible voltage

between the voltage measuring sockets or all connector sock-

ets and ground is 600 V for measuring category III and 300 V

for measuring category IV.

• Be aware of the fact that dangerous voltage peaks with signifi-

cant frequency components of greater than 1 kHz are not dis-

played when the low-pass filter is activated. We recommend

measuring voltage without the low-pass filter first, in order to

be able to detect any dangerous voltages.

• Be prepared for the occurrence of unexpected voltages at de-

vices under test (e.g. defective devices). For example, capaci-

tors may be dangerously charged.

• Make certain that the measurement cables are in flawless con-

dition, e.g. no damage to insulation, no interruptions in cables

or plugs etc.

• No measurements may be made with this instrument in electri-

cal circuits with corona discharge (high-voltage).

• Special care is required when measurements are made in HF

electrical circuits. Dangerous pulsating voltages may be pres-

ent.

• Measurements under moist ambient conditions or with an in-

strument with condensation are not permissible

• Be absolutely certain that the measuring ranges are not over-

loaded beyond their allowable capacities. Limit values are in-

cluded in section 8, “Technical Data”, in the table entitled

“Measuring Functions and Measuring Ranges” in the “Over-

load Capacity” column.

• The multimeter may only be operated with installed batteries or re-

chargeable batteries. Dangerous currents and voltages are otherwise

not indicated, and the instrument may be damaged.

• The instrument may not be operated if the fuse cover or the

battery compartment lid has been removed, or if its housing is

open.

• The input for the current measuring range is equipped with a

fuse link. Use specified fuses only (see page 84)! The fuse

must have a breaking capacity of at least 30 kA.

• Observe optical and acoustic warning signals (see section 1.2

and section 1.3).

Opening of Equipment / Repair

The equipment may be opened only by authorized service per-

sonnel to ensure the safe and correct operation of the equipment

and to keep the warranty valid.

Even original spare parts may be installed only by authorized ser-

vice personnel.

In case the equipment was opened by unauthorized personnel,

no warranty regarding personal safety, measurement accuracy,

conformity with applicable safety measures or any consequential

damage is granted by the manufacturer.

Repair and Parts Replacement

When the instrument is opened, voltage conducting parts may be

exposed. The instrument must be disconnected from the measu-

ring circuit before performing repairs or replacing parts. If repair of

a live open instrument is required, it may only be carried out by

trained personnel who are familiar with the dangers involved.

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Gossen Metrawatt METRAHIT ENERGY Manual

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