Megger MET1000 User manual

MET1000
All in One True RMS Electrical Tester
User Guide
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www.weschler.com [e-mail]
WESCHLER INSTRUMENTS
Authorized Distributor:

Megger Ltd reserves the right to alter the specification of its products from time to time
without notice. Although every effort is made to ensure the accuracy of the information
contained within this document it is not warranted or represented by Megger Ltd. to be
a complete and up - to - date description.
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English

Declaration of Conformity
Hereby, Megger Instruments Limited declares that radio equipment manufactured by
Megger Instruments Limited described in this user guide is in compliance with Directive
2014/53/EU. Other equipment manufactured by Megger Instruments Limited described
in this user guide is in compliance with Directives 2014/30/EU and 2014/35/EU where
they apply.
This manual supersedes all previous issues of this manual. Please ensure that you are
using the most recent issue of this document. Destroy any copies that are of an older
issue.
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Safety Information
To ensure safe operation and service of the meter, follow these instructions.
Failure to observe warnings can result in severe injury or death.
If the equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired.
Always use the proper terminals, switch position, and range for measurements.
Ensure hands are kept behind the barrier / hand guard when making
measurements
To reduce the risk of fire or electric shock, do not use this product around explosive
gas or in damp locations.
Verify the Meter operation by measuring a known voltage. If in doubt, have the
meter calibrated.
Do not apply more than the rated voltage, as marked on meter, between terminals
or between any terminal and earth.
Avoid working alone.
Do not use the tester if the tester is not operating properly or if it is wet.
Personal protective equipment must be used if hazardous live parts in the
installation where the measurement is to be carried out could be accessible.
Use caution with voltages above 30 VAC rms, 42 VAC peak, or 60 VDC. These
voltages pose a shock hazard.
DO NOT USE the test leads if the internal white insulation layer becomes exposed.
DO NOT USE the test leads for voltage or current measurement in any environment
above the safety CAT rating printed on the probe or probe tip guard cap
DO NOT USE the test leads without the probe tip guard cap in CAT III or CAT IV
environments.
Probe assemblies to be used for mains measurements shall be rated as appropriate
for measurement Category III or IV according to IEC 61010-031 and shall have a
voltage rating of at least the voltage of the circuit to be measured.
Disconnect circuit power and discharge all high-voltage capacitors before testing
resistance, continuity.
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Safety Information

Symbols as marked on the Meter and Instruction manual
Symbol Explanation
Risk of electric shock
See instruction manual
DC measurement
AC measurement
Both direct and alternating current
Equipment protected by double or reinforced insulation
Battery
Earth
Conforms to EU directives
Application around and removal from hazardous live
conductors
Do not discard this product or throw away
CATIV: Measurement category IV: Equipment connected between the origin of the low-
voltage mains supply outside the building and the consumer unit.
CATIII: Measurement category III: Equipment connected between the consumer unit and
the electrical outlets.
CATII: Measurement category II: Equipment connected between the electrical outlets
and the user’s equipment.
Making Basic Measurements
Observe all Warnings and Cautions before measurements.
G CAUTION
When connecting the test leads to the device under test connect the common test
leads before connecting the live test lead. When removing the test leads, remove
the live test lead before removing the common test lead.
Make sure that the buzzer sound is perceptible before using it under high
background noise environment.
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Safety Information

Voltage/Continuity/Single Pole Mode
Voltage Measurement
LED Gindicates measured voltage is high than ELV limit (50 VAC and/or 120 VDC).
G Warning
When batteries are not fitted or are exhausted, the tester is capable of measuring
>45 VAC and/or >35 VDC.
Timing Rating (tr): 30 seconds, Recovery Time (rt): 240 seconds, when measuring
>300 V, recovery time is necessary.
L/R LED may light up when measuring AC voltage.
Due to the high internal resistance, capacitive and inductive voltage (ghost voltage)
may be indicated.
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Voltage/Continuity/Single Pole Mode

Continuity Check
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Voltage/Continuity/Single Pole Mode

Single Pole Phase Check
Detach lead
Grip firmly
Neutral Live
G Warning
The MET1000 Single Pole Check feature consists of using only one test lead
connected to the MET1000, remove second test lead if fitted.
To carry out Single Pole Check test, while firmly holding the MET1000 connect the
test lead into a live circuit, this will cause the MET1000 to repeatedly beep and the
hazard symbol to illuminate without any voltage being displayed on the screen.
If a voltage appears on the screen then use 2 Pole method to prove the circuit live.
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Voltage/Continuity/Single Pole Mode

Phase Rotation Test
Clockwise Phase Sequence L1-L2-L3 (Right)
Source Terminal
Grip 󰄈rmly
Counter-clockwise Phase Sequence L1-L3-L2 (Left)
Source
Grip 󰄈rmly
Terminal
G Warning
Phase Rotation Test works only on 3 phase 4 wire systems. The result is unreliable on
any other systems.
G Note
It maybe necessary to check the result by testing in reverse sequence.
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Phase Rotation Test

Resistor Mode
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Resistor Mode