Unitest TELARIS LOOP Instruction Manual
TELARIS
®
LOOP
UNITEST
®
Instruction Manual Cat. No. 8978
2
English
3
Contents
Contents Page
1.0 Introduction / Scope of Supply ..............................................4
2.0 Transport and Storage............................................................4
3.0 Safety Measures ....................................................................5
4.0 General Information ..............................................................6
5.0 Display Indications / Control Elements ..................................7
6.0 Carrying out Measurements ..................................................8
6.1 Loop Measurement ................................................................8
6.2 Internal Mains Resistance Measurement................................9
6.3 RPE/RN/RL Measurement......................................................10
6.4 AC Voltage Measurement (VAC) ............................................11
6.5 Frequency Measurement (f) ..................................................11
6.6 Contact Electrode ..................................................................11
7.0 Display Indications.................................................................12
8.0 Storing Measurements ..........................................................14
9.0 Deleting stored Measurement Data ........................................14
10.0 Energy Management ..............................................................14
11.0 Appropriate Usage ................................................................14
12.0 Maintenance ..........................................................................14
12.1 Cleaning ................................................................................14
13.0 Battery Replacement..............................................................15
14.0 Calibration Interval ................................................................15
15.0 Technical Data........................................................................16
References marked on instrument or in instruction manual:
Warning of a potential danger, comply with instruction manual.
Reference. Please use utmost atention
Caution! Dangerous voltage. Danger of electrical shock.
Continuous double or reinforced insulation
complies with Category II.
Conformity symbol, the instrument complies
with the valid directives. It complies with the
EMC Directive (89/336/EEC), Standards EN
50081-1 and EN 50082-1 are fulfilled. It also
complies with the Low Voltage Directive
(73/23/EEC), Standard EN 61010-1 is fulfilled.
The instruction manual contains information
and references, necessary for safe operation
and maintenance of the instrument.
Prior to using the instrument (commissioning / assembly) the user is kindly requested to thoroughly
read the instruction manual and comply with it in all
sections.
Failure to read the instruction manual or to comply
with the warnings and references contained herein
can result in serious bodily harm or instrument damage.
1.0 Introduction
You have purchased a high quality measurement instrument of Ch. BEHA GmbH which will allow you
to carry out measurement over a long period of time.
The company Ch. BEHA GmbH is a member of the
world wide operating BEHA Group with its head office in Glottertal/Schwarzwald which also houses
our development centre. The BEHA Group is a leading organisation for Test and Measuring Instruments.
The instrument UNITEST TELARIS LOOP is characterised by the following features:
• A unit designed to allow the user to quickly establish earth loop impedance, mains internal resistance and prospective short circuit current.
• Enables the user to measure the individual conductor resistances independently: protective conductor resistance, phase resistance and neutral
conductor resistance.
• Designed to test the earth loop resistance without
tripping any RCD
• Designed to test AC voltages up to 300V AC.
• Designed to test frequency ranges up to 200 Hz.
• Includes a built-in memory capability allowing the
user to store up to 250 test results.
• Supplied with an infrared/ RS 232 serial port for
transferring test data or printing out results via the
PC.
• Enables the user to pre-select the maximum permissible contact voltage.
• Includes a clear and large LCD display providing
the user with an optimum visual
indication of both test values and limits
• Includes an integrated energy management system with auto-power-off function to
ensure optimum battery usage.
• Supplied complete with standard carrying case.
• Designed to meet the constructional standards
IEC 61010, IEC 61557-1/3, EN 61557-1/3, DIN
VDE 0413, Part 3.
Scope of Supply
1 pc TELARIS LOOP
1 pc test lead
1 pc measuring lead
1 pc alligator clamps
3 pcs test probe
1 pc battery 9V, IEC 6LR61
1 pc carrying case
1 pc instruction manual
2.0 Transport and Storage
Please keep the original packaging for later transport, e.g. for calibration. Any transport damage due
to faulty packaging will be excluded from warranty
claims.
4
Introduction / Scope of Supply / Transport and Storage
English
5
Safety Measures
In order to avoid instrument damage, it is advised to remove batteries when not using the instrument over a certain period of time. However, should the instrument be contaminated by
leaking battery cells, you are kindly requested to
return it to the factory for cleaning and inspection.
Instruments must be stored in dry and closed areas.
In the case of an instrument being transported in extreme temperatures, a recovery time of minimum 2
hours is required prior to instrument operation.
3.0 Safety Measures
The UNITEST TELARIS LOOP has been designed
and checked in accordance with the safety regulations for Electronic Test and Measurement Instruments EN 61010 and IEC 1010, and left our factory
in a safe and perfect condition. To maintain this condition the user must pay attention to the safety references contained in this instruction manual.
The respective accident prevention regulations
established by the professional associations regarding electrical systems and equipment must
be strictly met for all tasks.
In order to avoid electrical shock, the valid safety and VDE regulations regarding excessive
contact voltages must receive the utmost attention, when working with voltages exceeding
120V (60V) DC or 50V (25V)rms AC. The values
in brackets are valid for limited ranges (eg for
medicine and agriculture).
If the operator’s safety can no longer be guaranteed, the instrument is to be put out of service and protected against use. The safety is no
longer guaranteed, if the instrument:
• shows obvious damage
• does not carry out the desired measurement.
• has been stored for too long under unfavourable conditions.
• has been subjected to mechanical stress du-
ring transport.
The instrument may only be used within the
operating ranges as specified in the technical
data section.
Avoid any heating up of the instrument by direct
sunlight to ensure perfect functioning and long
instrument life.
The Earth Loop Resistance Measurement Instrument complies with the overvoltage class
CAT III / 300V and may only be used for mains
systems of maximum 230 V (fused at maximum
16 A).
Only use the mains cable supplied. The unit
was calibrated with this cable and only in this
way can the resistance values measured be
exactly indicated.
4.0 General Information
The loop impedance (L-PE / loop impedance) is understood as the sum of all resistance values within
a current loop, consisting of the resistors of the current source, the external conductor of the current
source up to the measurement point and the return
line (PE conductor) until the other current source
pole. The measurement determines the loop impedance between external conductor and the PE conductor. The Loop impedance value is measured by
short-term mains loading.
Additionally, the instrument TELARIS Loop allows
the user to test the mains internal resistance measurement (L-N). This measurement is not required
by DIN VDE [German Standard], however it is considered as important and valuable support in practical applications e.g. for evaluating an installation
as well as for trouble shooting.
Simultaneously to measurement, the instrument
TELARIS LOOP determines (by calculation) the
short-circuit current. The short-circuit current must
be known to guarantee that an excess current release having been switched in series can trigger at
an appropriate current level and thus at sufficient
speed in the event of short-circuit.
Terms:
Loop Impedance (ZL):
Sum of impedance values within a current loop (between the L and PE conductor).
Internal Resistance (RI):
Sum of resistance values within a current loop (between the L and N conductor).
RL: Phase resistance
RPE: Protective conductor resistance
RN: Neutral conductor
RE: Earth-Resistance
Short-Circuit Current (IPSC):
Occurring current flow in the event of short circuit.
Specified Threshold Value of Contact Voltage (UL):
Peak value of contact voltage (Limit), which may be
maintained without time limit under specific environmental influence and corresponding to an rms
value of 25V / 50V AC
6
General Information
V
ZL
Voltage-Source
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