Gossen Metrawatt METRAVOLT 12D + L User manual

GOSSEN METRAWATT

3-349-592-02

Operating Instructions

METRAVOLT 12D+L

Voltage-Continuity Tester

7/11.18

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1

2

3

4
5

6
7

8

9

10

1 Test electrodes
2 Red

-LED for hazardous voltages

≥ 50 V AC / 120 V DC
3 Green LED „Ω“

for continuity 0 ... 1999 kΩ
(acoustic signal signalizes continuity)
4 RED LEDs for rotating eld left/right
5 Display (LCD)
6 Button

7 Button

HOLD

: function to recording values

Ω

/

: change-over switch for

V

resistance and voltage measurements and

zero balancing of the kΩ range

8 Button : switch on/o (manual) and
function test
9 Handgear
10 Connecting line

Symbols on the instrument

Attention! Observe user instructions!

Indicates EC conformity

TR

On-time at highest nominal voltage

on

RT

overy time after tests with highest nominal voltage

Rec

o

Device for live working

This devices may not be disposed with the domestic

(

WEEE 2012/19/EU).

waste

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1. Application

The METRAVOLT 12D+L is a two-pole voltage tester
with digital display. It complies with DIN EN 61243-3
(VDE 0682 part 401) and is provided with continuity
and phase tester, polarity tester and phase sequence
indicator. With this device you can determine the
existence and the strength of AC and DC voltages
within a range of 24 V to 1000 V at frequencies up
to 4 kHz.
With the integrated continuity tester you can also
measure resistances within a range of 0 to1999 kΩ.
Voltage and resistance values appear in digital
format on the display. Additionally, three LEDs
indicate voltage and rotating eld as well as one LED
and one sound generator continuity. Due to its high
protection category IP 65 the METRAVOLT 12D+L
can be used in precipitation.

1.1 Intended use

This device is intended for use in applications as
described in the operating instructions only. Thus,
it is imperative to observe the notes on safety and
the technical data in conjunction with the ambient
conditions.
Any other form of usage is not permitted and can
lead to accidents or destruction of the unit.
Any misuse will result in the expiry of all guarantee
and warrantly claims.

2. Safety Precautions

You have selected an instrument which provides
you with a high level of safety. When used for its
intended purpose, safety of the operator, as well as
that of the instrument, is assured.

In order to maintain awless technical safety con­ditions, and to assure safe use, it is imperative that
you read these operating instructions thoroughly
and carefully before placing your instrument
into service, and that you follow all instructions
contained therein.

The instrument provides a high level of safety by
means of two series resistors immediately behind
the test electrodes as well as two absolutely inde­pendently working test systems.

- LV-indication of existent voltage indicated
by one LED, even without battery.

- digital indicator for exact test values.

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Please observe the following safety precautions:

The voltages indicated on the METRAVOLT 12D+L

are rated voltages. The voltage tester may only be
used in systems working within this rated voltage
range.

Faultless indication of display values is only

guaranteed between -15°C ... +45°C.

Hold the instrument by its handgears only, to

avoid covering the display or touching the test
elecrodes.

The maximum on-period of the METRAVOLT

12D+L is 2 minutes.

Only qualified persons may carry out work with

these device. The user needs to be farmiliar with
the risks for measuring voltage and compliance
with safety regulations and the proper use of the

voltage detector.
Workings may only be performed with appropri­ ate personal protective equipment.

Observe the minimum object distance to other

plant components that are energized or earthed

and use personal protective equipment as speci­ fied by national accident prevention regulations

(in Germany: DGUV 3 or VDE 0105-100).
The function of the voltage tester must be

checked briefly before and whenever possible

after the use. Carry out the function test and

check the instrument at a known voltage source

(AC and DC). If the indication of one or several

systems fails in the course of checking, the

instrument must not be used again.
The red

hazardous voltage and not as measurement
value.
This voltage detector may not permit to clearly

indicate the absence of operating voltage in case

of interference voltage because of its relatively

high internal impedance.

When the indication “voltage present” appears

on a part that is expected to be disconnected of

the installation, it is recommended confirming by

an other means that there is no operating voltage

on the part to be tested.
With determination of phase conductors and

phase sequence the perceptibility of the display

may be impaired, e.g. when using insulating

protective gears, in unfavourable locations, for

example on wooden ladders or insulating floor

coverings, as well as with unfavourable lighting

conditions and in an improperly earthed AC

voltage system.
Before use, the battery compartment must be

closed.



The voltage tester may only be dismantled by

authorised personnal.



Before using the device check the housing and

connecting line for visible damage. If damages

are visible the voltage tester may not be placed into

operation. In case of strong dirt contamination, the

tester must be cleaned before use.



The tester has to be stored in a clean and dry

environment.

-LED only serves as a indication for

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3. Putting into operation

3.1 Battery

Your instrument is already supplied with a 9 V block
battery in accordance with IEC 6 LR 61.
The battery status is indicated by a battery symbol
on the display (see section 6).

3.2 Testing correct display and function (self-test)

In accordance with EN 50110-1 voltage testers must
be checked if they function correctly, briefly before
and whenever possible after the use, for determi­ning absence of voltage.

Step 1 – Test of the display

Press and hold button
light up on the display, additionally, the “Ω“ LED
and rotating eld LEDs light up as well as a buzzer
sound can be heard.
Release button
indicated on the display.

Step 2 – Checking the line / function

Afterwards, actuate button
appear on the display. Hold the test electrodes
together. The value “000 ... 1999 kΩ“ appears on
the display. Through this, the measuring electronic
and line have been tested.

Note

The red
A daily check is not neccessary due to the highly
reliable function.
When a voltage (≥ 50 V AC / 120 V DC) is indicated on
the LCD the LED must light up.

Attention!

If one of the displays fails during the self-test – even
if only partial failure occurs – or if the instrument
does not indicate a function standby or the
red
light up, the voltage tester may not be placed into
operation!

-LED is not checked by this self-test.

-LED at voltage > ELV (e.g. 230 V~)does not

. All display segments

, the value “0.00 ... 0.02 V“ is

Ω

/

. “OL“ and “MΩ“

V

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4. Measuring and testing

4.1 General information

The voltage tester switches on automatically when
a voltage of at least 24 V is applied. If the function
continuity testing had been activated, the device
switches automatically to voltage testing. The in­strument automatically selects the measuring range
that corresponds to the applied voltage (see section

5.). In order to extend battery life the instrument
switches o automatically approximately 30 seconds
after the last measurement.

Note:

It is possible that the voltage tester switches-on
automatically when only one test electrode is
connected to voltage or to a statically charged
object. This has no signicance.

“Hold” test results (HOLD)

The maximum voltage value can be stored on the
display when keeping pressed button
The value is recorded for approx. 30 seconds or until
you press button
stopped when again a voltage is impressed.

Note:

When the measured value does not vary for
2 seconds, the maximum value is recorded.

4.2 Testing voltage an polarity

Securely contact the test electrodes with the test
points. Voltage is indicated on the display.

Attention!

When a hazardous voltage (≥ 50 V AC / 120 V DC)
is present, the red LED
light up, the voltage tester may not be placed into
operation!
The maximum allowable on-time for voltage testing
is 2 minutes.

Note:

The display of the LV indication (LED) remains
in working order even when the battery is not
available.

Direct and alternating voltage, polarity

The type of voltage is indicated by the symbols ”~”
for AC and ”-” for DC. When minus is connected to
the test electrode with display part designated with
”+”, then the “-” leading sign appears. When plus is
connected, then no leading sign appears left to the
displayed value.

Note:

Voltages with frequency of more than 2 kHz are
indicated by the ashing Hz symbol.

HOLD

again. The Hold-function is

lights up. If it does not

HOLD

.

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Voltages < 24 V

For voltages of less than 24 V the device must be
switched on or over by actuating the push-button

.

Voltages 24 ... 1000 V AC / 1500 V DC

(Nominal voltage range in accordance with IEC
61243-3). The device automatically indicates the
type of voltage (AC / DC) and voltage in „V“ on the
display.

Voltages 1000 V AC ... 1200 V AC

(Exceeds the limit values in accordance with
IEC 61243-3). With the METRAVOLT 12D+L you can
perform secure tests above the nominal voltage
range up to 1200 V AC. The measurment value is
indicated by ashing in the display.

Voltages > 1200 V AC / > 1500 V DC

“OL” in the display and an acoustic alarm warn
against voltages exceeding 1200 V AC and excee­ding 1500 V DC. In this case, the test procedure must
be stopped immediately!

4.3 Testing phase and phase sequence

The METRAVOLT 12D+L is equipped with 2 triangu­lar LEDs for the indication of phase sequence tests.
Attention!
These tests can be performed at a nominal voltage of
at least 165 V (50 Hz) against earth.
When performing these tests, the device must be
hold closely at the handgear of the display part
(see picture below).
Note: You may wear insulating gloves when perfor­ming the tests.
Tests can be impaired by unfavourable locations,
for example on wooden ladders or insulating oor
coverings, as well as in improperly earthed AC
voltage systems.

4.3.1 Phase test

Determination of the outer conductor occurs by
applying the test electrode +L1 to the conductor.
When “POL” appears on the display, the conductor
is live.

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4.3.2 Testing phase sequence

To determine the phase sequence between two
phases in the phase network apply both test
electrodes, clasp the handle of the display part and
proceed as follows:

- Search for the phase conductors using one pole

(see phase test).

- Apply both test electrodes to the two phase

conductors (display 400 V).

- When phase L1 is applied to the test electrode

marked (+L1) and L2 to the other test electrode
„ R“ appears at the display for rotation is
clockwise. If „L“ is indicated direction of rotation
is counter-clockwise.

- The test result has to be checked by exchanging

the two test electrodes. The opposite direction

of rotation must be displayed.
If 230 V is displayed instead of 400 V, the neutral
conductor may have been contacted with one of the
test electrodes.

4.4. Testing resistance and continuity

When the instrument is switched on, press button

Ω

/

. “OL” and “MΩ” appear on the display.

V

Securely contact the measuring points with the test
electrodes.
Resistance values 0 ...10 kΩ the measured value is
indicated on the display in “kΩ“. The green LED “Ω“
lights up at the same time and an acoustic signal is
generated.
Resistance values 10 kΩ ...1,999 MΩ the measured
value is indicated on the display in “kΩ“ or in “MΩ“.
The LED “Ω“ lights up at the same time and no
acoustic signal is generated.
Resistance values > 2 MΩ the display passes to
overow and “OL” and “MΩ“ appear on the display.
The LED does not light up and no acoustic signal is
generated.

Function to “hold” measured values (HOLD)

As long as you keep pressed button

HOLD

you can
record the latest measured resistance value on the
display.

Zero balancing

The zero point in the resistance measuring range
can be recalibrated if necessary:
Hold the test electrodes together and press and
hold button

Ω

/

until “CAL” appears on the display

V

and the green LED “Ω“ ashes.
When “000“ is indicated and the LED “Ω“ lights up
continuously, then calibration has been carried out
sucessfully. During this process an acoustic signal is
generated.

Note:

During continuity tests, the plus pole of the
measuring voltage is located at the test electrode
designated with +L1. The measuring current has a
constant value of 5 μA for values of 0 ... 10 kΩ; 1 μA
for 10 ... 1999 kΩ. If in this operating mode a voltage
of 24 V or more is impressed, the device switches
automatically to voltage testing.

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5. Technical data METRAVOLT 12D+L

Measure-

Measuring

ment

ranges
(auto-ranging)

0,10 V ... 8,99 V

U-

9,0 V ... 99,9 V
100 V ... 1500 V

1,0 V ... 99,9 V

U~

100 V ... 1200 V

TRMS

U~¹)

15 V ... 99,9 V
100 V ... 499 V

500 V ... 1200 V

R

0 ... 49 kΩ
50 ... 1999 kΩ 1 kΩ

¹) effective value; sinus

Nominal voltage range:

Resolution Frequency

0,01 V
0,1 V
1 V

0,1 V
1 V

range/
measuring

_

15 Hz ...
1,8 kHz

›1,8 Hz ...
... 10 kHz

›1,8 Hz ...
... 4 kHz

5 µA
1 µA

Intrinsic
error

±1,5 %
+3 digits

±1,5 %
+3 digits

±15 %
+3 digits

±5 %
+3digits

24* ... 1000 V AC/1500 V DC
*Auto on from 24 V

Overvoltage range

exceeds the limit values in accordance with IEC 61243-3):

(

> 1000 V AC ... 1200 V AC
Nominal frequency range: 0 ... 500 Hz
Extended frequency range

exceeds the limit values in accordance with IEC 61243-3):

(

15 Hz ... 10 kHz < 500 V,

15 Hz ... 4 kHz > 500 V
Input resistance: approx. 320 kΩ AC

approx. 710 kΩ DC
Current (Peak value I

): 3,2 mA at 1000 V AC

s

1,4 mA at 1000 V DC
On-period: 2 minutes
Display: 4 LEDs for voltage,

continuity, and

phase sequence

LCD digital display

7-segment-gure,

2 lines

0 ... 1999 digit

backlight

3 measurments/s
Power supply: 9 V block battery

IEC 6LR61 (alkali­ manganese) or corre-
sponding accumulator,

multi-stage display

of battery status

Measurement category: CAT IV 600 V

CAT III 1000 V
Impulse withstand voltage: >12 kV (1,2/50 µs)
Test voltage: 6 kV
EMV-requirements: DIN-EN 61326
Operating temperature: -15…+45°C
Casing: impact-resistant,

dustproof plastic casing

with unbreakable display

cover

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Protection category: IP 65
Connecting line: PUR hose cable

Dimensions: test electrode

Weigth: 270 g (incl. battery)

6. Battery

6.1. Battery indication

The latest battery status is symbolised by a three­stage battery indicator.

o automatically. Depending on

Attention!

When the empty battery symbol ashes, then no
more measurements can be performed and the
battery has to be replaced immediately.
The device requires a 9 V block battery IEC 6 LR61
(alkali-manganese).

6.2 Replacing the battery

Loosen the screw at the back of the instrument
which secures the battery compartment lid, remove
the lid.
Let the battery drop out of the battery compartment
with its CAT IV protection cover and exchange it.
Therefore, snap the battery contacts onto the 9 V
block battery and insert the battery together
with the CAT IV protection cover into the battery
compartment. Put the lid back on the battery com­partment and screw it tight.
Regularly make sure that the battery of your device
does not leak. In case it does, you have to replace
the electrolyte completely and to insert a new
battery.
In case of a long storage period, remove the battery
from the device.

Note:

Included in the scope of delivery is one battery.
These battery is not to be re-charged. Attempting to
recharge it may cause risk to personal safety and da­mage to the equipment. The battery may not to be
opened. Depleted batteries must not be disposed
with the domestic waste. Please, return batteries at a
local retailer or municipal recycling depot. Return is
free of charge and required by law.

1000 V, 1m

with display part
240 x 62 x 39 mm

= battery lled

= battery semi-lled

(still many measurements possible)

= battery empty
The screen backlighting switches-

type of battery, you still can perform
at least 30-100 measurments.

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7. Maintenance

7.1 General information

The METRAVOLT 12D+L is absolutely mainteinance­free. Nevertheless, observe the following information
in order to maintain safe operation:
Always keep the voltage tester dry and clean. The
housing can be cleaned with a cloth dampened with
isopropyl (alcohol) or soapy water.

7.2 Repeated inspection

According to EN 61243-3 it is recommended to carry
out repeated examinations.
It should not exceed the time-limit of 6 years.
Depending on operation conditions and frequency, a
previous inspection may be recommendable.
The serial number with the date of manufacturing
(WWYYNN=Week Year Number) is imprinted on the
backside of the device. Repeated inspections are
oered by the manufacturer and indicated by the
inspection plate.

7.3 Device Return and Environmentally

Compatible Disposal

The instrument is a category 9 product (monitoring
and control instrument) in accordance with ElektroG
(German Electrical and Electronic Device Law).
This device is subject to the RoHS directive.
We identify our electrical and electronic devices
in accordance with WEEE 2012/19/EU and ElektroG
with the symbol shown to the right per DIN EN
50419 .
These devices may not be disposed of with the
trash. Please contact our service department
regarding the return of old devices (address see
chapter 8).

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