Gossen MetraWatt METRAPHASE 1 User manual

Operating Instructions
METRAPHASE 1
Phase Sequence Indicator 3-348-991-37
13/4.20

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(1) Connector sockets for phases L1 ... L3
(2) Rotary LEDs for displaying frequency and phase
sequence
(3) Phase sequence and frequency
Green arrow: Clockwise rotation,
LEDs light up green and rotate clockwise
Momentary frequency:
Indicated by LED which briefly lights up red
Dashed red arrow: Counterclockwise rotation,
LEDs light up red and rotate counterclockwise
Momentary frequency:
Indicated by LED which briefly lights up green
(4) Phase LEDs, indicate voltage at L1 ... L3
(5) Voltage value LEDs, indicate line-to-line voltage value
1
4
2
3
5
208V
120/
400V
230/
690V
400/
L3
L3
L2
L2
L1
L1
600 V CAT IV

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Meanings of Symbols on the Device
Warning concerning a point of danger
(attention: observe documentation)
Ground
Continuous, doubled or reinforced
insulation
CAT IV Maximum allowable voltage between the
connector sockets (1) and ground it is
600 V category IV.
EU conformity marking
This device may not be disposed of with house-
hold trash. Further information regarding the
WEEE mark can be accessed on the Internet at
www.gossenmetrawatt.com by entering the
search term “WEEE”.
!

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Table of Contents
Page
1 Safety Instructions .......................................................... 5
2 Applications .................................................................... 7
2.1 Intended Use / Use for Intended Purpose ............................. 7
2.2 Use for Other than Intended Purpose .................................. 7
2.3 Liability and Guarantee ...................................................... 7
2.4 Opening the Instrument / Repairs ....................................... 7
3 Initial Startup ................................................................... 8
4 Operation ......................................................................... 8
4.1 Voltage Display .................................................................. 8
4.2 3-Pole Connection ............................................................. 9
4.3 2-Pole Connection ............................................................ 9
5 Characteristic Values, Phase Sequence Indicator ......... 11
6 CE Declaration ............................................................... 13
7 Maintenance ................................................................. 13
7.1 Battery ............................................................................ 13
7.2 Housing .......................................................................... 14
7.3 Returns and Environmentally Sound Disposal .................... 14
8 Accessories (not included) ............................................ 14
9 Repair and Replacement Parts Service
Calibration Center and Rental Instrument Service ........ 15
10 Product Support ............................................................ 15

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1 Safety Instructions
Observe this documentation, in particular all included
safety information, in order to protect yourself and others
from injury, and to prevent damage to the instrument.
• Carefully and completely read and adhere to these
operating instructions.
This document can also be accessed at http://
www.gossenmetrawatt.com. Retain this document for
future reference.
• Tests may only be performed by a qualified electrician,
or under the supervision and direction of a qualified
electrician. The user must be instructed by a qualified
electrician concerning performance and evaluation of
the tests.
• Wear suitable and appropriate personal protective
equipment (PPE) whenever working with the instru-
ment.
• Only use accessories which are included with the
instrument or listed as optional accessories.
• Carefully and completely read and adhere to the prod-
uct documentation for accessories. Retain these doc-
uments for future reference.
• The instrument may only be operated by persons who
are capable of recognizing contact hazards and taking
the appropriate safety precautions. Contact hazards
exist anywhere, where voltages of greater than
30 V RMS may occur.
• Do not work alone when performing measurements
which involve contact hazards. Be certain that a sec-
ond person is present.
• If the device doesn’t function flawlessly, remove it from
operation and secure it against inadvertent use.
• The device may only be used as long as it’s in good
working order.
Inspect the housing before use. Pay particular atten-
tion to any possible cracks and the insulation around
the sockets.
Damaged components must be replaced immediately.
• Accessories and cables may only be used as long as
they’re fully intact.
Inspect all cables and accessories before use. Pay
particular attention to damaged housings, interrupted
insulation or kinked cables.
Damaged components must be replaced immediately.
• Do not use the instrument after long periods of storage
under unfavorable conditions (e.g. humidity, dust or
extreme temperature).
• Do not use the instrument after extraordinary stressing
due to transport.
• Use the instrument only within the specified ambient
conditions.
• Use the instrument only in accordance with the speci-
fied protection class (IP code).

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• The instrument must not be exposed to direct sunlight.
• The instrument and the included accessories may only
be used for the measurements described here and in
the operating instructions for the instrument.
• Only use the instrument and the accessories within the
specified measuring category.
• Do not perform any measurements in electrical circuits
with corona discharge (high-voltage).
• Do not use the instrument if the battery compartment
cover has been removed. Touch contact with danger-
ous voltage is otherwise possible.

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2 Applications
2.1 Intended Use / Use for Intended Purpose
The instrument is a phase sequence indicator with elec-
tronic rotary dial, frequency display and nominal line volt-
age display.
Note!
It’s not a voltmeter in the usual sense of the word –
it only indicates voltage within the specified ranges.
Safety of the operator, as well as that of the instrument, is
only assured when it’s used for its intended purpose.
2.2 Use for Other than Intended Purpose
Use of the instrument for any purposes other than those
described in these operating instructions is contrary to use
for intended purpose.
2.3 Liability and Guarantee
GMC-I Messtechnik GmbH assumes no liability for prop-
erty damage, personal injury or consequential damage
resulting from improper or incorrect use of the product, in
particular due to failure to observe the product documen-
tation. Furthermore, all guarantee claims are rendered null
and void in such cases.
2.4 Opening the Instrument / Repairs
The instrument may only be opened by authorized, trained
personnel in order to ensure flawless, safe operation and to
assure that the guarantee isn’t rendered null and void.
Even original replacement parts may only be installed by
authorized, trained personnel.
Unauthorized modifications to the instrument are prohib-
ited.
If it can be ascertained that the instrument has been
opened by unauthorized personnel, no guarantee claims
can be honored by the manufacturer with regard to per-
sonal safety, measuring accuracy, compliance with appli-
cable safety measures or any consequential damages.

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3InitialStartup
Batteries
The phase sequence indicator is shipped ready to use with
four AA batteries. Before initial startup, be sure to read
section 7.1, “Battery”.
Battery Test
If none of the LEDs light up after applying voltage, or if
they’re very dim, the batteries need to be replaced.
Switching the Instrument On Automatically
The instrument is switched on automatically when a volt-
age of at least 100 V is applied to 2 measuring sockets.
Automatic Shutdown
The instrument is switched off automatically when voltage
is no longer applied. Battery service life is extended in this
way.
4Operation
Attention!
!
Measurements per DIN EN 61010-031 may only
be performed in environments in accordance with
measuring categories III and IV with the safety cap
attached to the test probe at the end of the mea-
surement cable.
Note!
In order to establish contact inside 4 mm sockets,
the safety caps have to be removed by prying open
the snap fastener with a pointed object (e.g. the
other test probe).
Note!
The phase sequence indicator does not include
any fuses!
4.1 Voltage Display
Voltage is displayed by means of 3 red LEDs (5) which are
allocated to the respective nominal line voltages. The high-
est voltage which occurs within the circuit between two
phases is always detected.
Voltage is displayed for nominal voltages 120 V/208 V,
230 V/400 V and 400 V/690 V.
Missing or Unconnected Phase
If one of the phases isn’t connected to the phase
sequence indicator, or if it isn’t included in the wiring, its
potential is too small relative to the artificial neutral point.
The corresponding phase LED does not light up in this
case. However, the voltage value LED lights up in accor-
dance with line-to-line voltage.

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Special case: If the phase is missing at the L1 connector
socket, the voltage value LED indicates the next lower volt-
age because in this case the instrument no longer has an
internal reference point.
Attention!
!
The L1 socket on the METRAPHASE 1
must always be contacted first
in order to prevent erroneous measurements.
4.2 3-Pole Connection
Symmetrical Clockwise Rotation
If symmetrical clockwise rotation is measured, phase LEDs
L1, L2 and L3 are continuously lit up and an illuminated
green spot (rotary LED) rotates in the clockwise direction
around the display loop (approx. 30 RPM).
Symmetrical Counterclockwise Rotation
In the case of symmetrical counterclockwise rotation,
phase LEDs L1 through L3 light up as well, but color and
direction of the rotating spot are changed: it rotates in the
counterclockwise direction and lights up red.
Frequency Display
In the case of clockwise rotation, the LED assigned to the
momentary frequency briefly lights up red, as soon as the
illuminated rotating spot passes its position. In the case of
counterclockwise rotation, the corresponding LED lights
up green.
Instrument Sockets Connected to N or PE
If one of the sockets is connected to N or PE, the LED for
the incorrectly connected phase doesn’t light up. Phase
sequence indication is the same as for clockwise or coun-
terclockwise rotation.
Incorrect Wiring
If wiring has not been completed correctly, e.g. 2 x L1,
indefinite displays can be expected.
4.3 2-Pole Connection
ABC

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Phase sequence can also be determined with just 2 con-
nector cables if line frequency is 50 or 60 Hz:
1 Contact phase L1 first via connector socket L1 and
then connect phase L2 via connector socket L2 (see
figure A).
Phase LEDs L1 and L2, as well as the corresponding
voltage value LED, light up red. The two LEDs for 100
and 400 Hz also light up. This indicates that the instru-
ment has synchronized itself to phases L1 and L2.
2 Disconnect socket L2 from phase L2 (see figure B).
The two LEDs for 50 and 200 Hz light up during this
standby mode.
3
Now connect phase L3 via the L2 socket (see figure C).
Phase LEDs L1 and L3 light up red. L2 is generated in-
ternally. Phase sequence and line voltage value can be
read from the display.
Note!
Changing from L2 to L3 must be completed within
approximately two seconds. If this duration is
exceeded, the instrument is no longer able to
maintain synchronization with the mains. The 60,
100, 300 and 400 Hz LEDs light up simultaneously
to indicate that this is the case. The 100 and
400 Hz LEDs then light up, in order to indicate that
2-pole measurement has been restarted. The
same display sequence is used in the event that
the same phase is contacted again erroneously
instead of changing from one phase to the other.