METREL A 1636 User manual

DC/AC Current clamp 2000A
A 1636
Instruction manual
Version 1.2, Code no. 20 752 824

2
Distributor:
Manufacturer:
METREL d.d.
Ljubljanska cesta 77
1354 Horjul
Slovenia
web site: http://www.metrel.si
e-mail: [email protected]
© 2012 METREL
Mark on your equipment certifies that this equipment meets the
requirements of the EU (European Union) concerning safety and
electromagnetic compatibility regulations.
No part of this publication may be reproduced or utilized in any form or by any means without
permission in writing from METREL.

A 1636 DC/AC Current clamp
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Table of contents
1SYMBOLS AND WARNINGS..................................................................................4
2DESCRIPTION OF CURRENT CLAMP...................................................................5
3OPERATION INSTRUCTIONS ................................................................................6
4MAINTENANCE.......................................................................................................7
INSPECTION ...................................................................................................................7
CLEANING......................................................................................................................7
SERVICE AND CALIBRATION.............................................................................................7
5TECHNICAL SPECIFICATIONS..............................................................................8

A 1636 DC/AC Current clamp
4
1 Symbols and Warnings
To ensure a high level of operator's safety during using of A 1636 DC/AC current clamps the
following warnings has to be considered:
Do not apply around or remove from hazardous live conductors.

!
De-energize the installation on which the current is measured or adopt safe
operating procedures when working on hazardous live installations, during
application and removal of A 1636 current clamps.

!
Do not use the current clamp if any damage is noticed!

!
Consider all generally known precautions in order to avoid risk of electric shock
while dealing with electric installations!

!
Do not extend hands over safety barrier to prevent of electric shock! Only
handles are allowed to be touched during measurement!

!
Symbol on the current clamp indicates the possibility of a hazardous live
condition if the operator ignores the required safety measures.

!
If the current clamps are used in a manner not specified in this Instruction
manual, the provided protection can be impaired!

!
Only a competent, authorized person is allowed to carry out service intervention!

!
Do not connect clamp output elsewhere than to Metrel PQ Analyzers (MI 2892, MI
2885, MI 2883).
Current clamps are protected by double insulation.

A 1636 DC/AC Current clamp
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2 Description of current clamp
ETCR068AD Clamp AC/DC current Sensor is used for measurement of AC/DC current, phase,
power energy, power, power factor. Adopt the latest CT technology. It is portable, large clamp
design, no need to disconnect the measured circuits, non-contact, safe and fast. It can be
connected with phase detection analyzer, industrial control equipment, data recorder,
oscilloscope, harmonic analyzer, electric power quality analyzer, high precision digital multi-
meter, etc. Widely applied in electricity, communication, meteorology, railway, oilfield,
construction, measurement, scientific and research teaching unit, industrial and mining
enterprises.

A 1636 DC/AC Current clamp
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3 Operation Instructions
Adopt the combination of split coil and hall element, can use to measure AC current and DC
current, when current Ⅰgo through the sensor, hall element will output a hall voltage VH,
measure the hall voltage VHand calculate the current Ⅰ. Hall voltage VHis in proportion to
current Ⅰ, and the output of sensor is: 1mV/1A, it means that when the input current is 1A, the
ratio-metric voltage is1mV.
1. Clamp
2. Up cover
3. Trigger. (Open and close the clamp).
4.Indicate of positive input AC current
5.Power-on indication
6.Low voltage indication
7.ZERO clearing key
8.ON/OFF key, the switch of the power
9.Output wire (Red wire-positive signal output; Yellow-negative signal output)
10. Down cover.
11. Screws of up/down cover (3 screw, two of them are inside the cover)
12.Cover of battery
13.Screws of battery cover.
14.Output lead

A 1636 DC/AC Current clamp
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4 Maintenance
Inspection
To maintain operator safety and ensure reliability of the current clamp it is good practice to
inspect it on a regular basis. Check that the enclosure and optional connection are without
defects such as scratches or breaks.
Jaw surface must be clean. Pollution on jaw surfaces reduces the current clamp sensitivity.
Cleaning
Use a soft cloth moistened with soapy water or alcohol to clean non-metallic surface of the
current clamps and leave them to dry totally before using it.
!
Do not use liquids based on petrol or hydrocarbons!
!
Do not spill cleaning liquid over the current clamps!
To clean jaw cut surfaces use slightly oiled soft cloth.
Service and Calibration
It is essential that your clamp is regularly calibrated in order to guarantee the technical
specification listed in this Instruction manual. We recommend 2-year calibration interval. Metrel
encloses an original calibration certificate with every new instrument and clamp.
For recalibration and repairs under or out of warranty time please contact your distributor for
further information.
!
Only a competent, authorized person is allowed to carry out service intervention!

A 1636 DC/AC Current clamp
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5 Technical Specifications
Function
Measurement of AC/DC current, phase, power
energy, power, power factor
Power supply
Zn-Mn dry cell 6F22 9VDC (external power source is
allowed)
Rated current
15mA
Test mode
Clamp CT
Clamp Size
Φ68mm
Range
DC 0.0A~2000A; AC 0.0A~1000A
Resolution
0.1A AC/DC
Signal output
1 mV/1A
Accuracy
±2.0%FS (50Hz/60Hz; 23℃±2℃, below 70%RH,
keep the wire be in the center of clamp)
Phase Error
≤3°(AC50Hz/60Hz; 23℃±2℃)
Zero clearing
Press zero key is to clear the data, eliminate the
effect of geomagnetic field to the measurement of
AC current
Output connection
Standard connection: Red wire-positive output;
Yellow wire-negative output.
Output Wire Length
2m
Measured Wire
Position
Approximately in the geometric center of the clamp,
the errors for deviating the center of the clamp
increase 1.5%rdg.
Current Frequency
AC:45Hz-400Hz
Voltage of circuit
Below AC 600V
Voltage of battery
When the voltage of battery declines to 7.2V, and
the LED light will be on to indicate replace the
battery.
Dimension
224mmx115mmx43mm
Weight
515g
Working
Environment
-10℃~45℃below 80%rh
Storage
Environment
-10℃~60℃; below 70%rh
Insulation Strength
AC 3700V/rms (between coil and shell)
Safety Rules
IEC1010-1, IEC1010-2-032, Pollution degree:2 CAT
Ⅲ(600V)