User Manual
Table Of Contents
- 1 Scope of Delivery
- 2 Application
- 3 Safety Features and Precautions
- 4 Initial Start-Up
- 5 General Notes
- 5.1 Connecting the Instrument
- 5.2 Automatic Settings, Monitoring and Shut-Off
- 5.3 Measurement Value Display and Memory
- 5.4 Testing Earthing Contact Sockets for Correct Connection
- 5.5 Help Function
- 5.6 Setting Parameters or Limit Values using RCD Measurement as an Example
- 5.7 Freely Selectable Parameter Settings or Limit Values
- 5.8 2-Pole Measurement with Fast or Semiautomatic Polarity Reversal
- 6 Measuring Voltage and Frequency
- 7 Testing RCDs
- 8 Testing of Breaking Requirements for Overcurrent Protective Devices, Measurement of Loop Impedance and Determination of Short-Circuit Current (functions ZL-PE and IK)
- 9 Measuring Line Impedance (ZL-N function)
- 10 Earthing Resistance Measurement (RE function)
- 11 Measurement of Insulation Resistance
- 12 Measuring Low-Value Resistance up to 200 Ohm (protective conductor and equipotential bonding conductor)
- 13 Special Functions – EXTRA Switch Position
- 14 Database
- 15 Attaching the Test Probe Holder to the Carrying Strap
- 16 LED Indications, Mains Connections and Potential Differences
- 17 Characteristic Values
- 18 Maintenance
- 19 Appendix
- 19.1 Tables for Determining Maximum or Minimum Display Values in Consideration of Maximum Measuring Uncertainty
- 19.2 At which values should/must an RCD actually be tripped? Requirements for Residual Current Devices (RCDs)
- 19.3 Periodic Testing per DGUV Regulations 3 (formerly BGV A3) – Limit Values for Electrical Systems and Operating Equipment
- 19.4 Optional Accessories (not included)
- 19.5 List of Abbreviations and their Meanings
- 19.6 Keyword Index
- 19.7 Bibliography
- 20 Repair and Replacement Parts Service Calibration Center* and Rental Instrument Service
- 21 Recalibration
- 22 Product Support
GMC-I Messtechnik GmbH 15
5.7 Freely Selectable Parameter Settings or Limit Values
In addition to fixed values, other values can be freely selected
within predefined limits for certain parameters, if the symbol for
the EDIT menu (3) appears at the end of the list of setting values.
Freely Selecting a Limit Value or Nominal Voltage
1 Open the submenu for setting the desired parameter
(no figure, see section 5.6).
2 Select parameter (U
L
) using the ↑ or ↓ scroll key
(no figure, see section 5.6).
3 Select a setting value with the help of the icon and the ↑ or ↓ scroll
key.
4 Select the edit menu: Press the key with the icon.
5 Select the desired value or unit of measure with the LEFT or RIGHT scroll
key. The value or unit of measure is accepted by pressing the ↵ key. The
entire value is acknowledged by selecting
✓ and then pressing the ↵ key.
The new limit value or nominal value is added to the list.
Note
Observe the predefined limits for the new setting value.
New, freely selected limit values or nominal values
included in the parameters list can be deleted/edited at
the PC with the help of ETC software.
If the upper limit value is exceeded, this limit value is used
(65 V in the example), and if the lower limit value is fallen
short of, it’s used (25 V).
5.8 2-Pole Measurement with Fast or Semiautomatic Polarity
Reversal
Fast, semiautomatic polarity reversal is possible for the following
measurements:
• Voltage measurement (U)
• Loop impedance measurement Z
L-PE
• Internal line resistance measurement Z
L-N
• Insulation resistance measurement – RINS
Fast Polarity Reversal
The polarity parameter is set to AUTO.
Fast and convenient switching amongst all polarity variants, or
switching to the parameter settings submenu, is possible by
pressing the I∆N key at the instrument.
Semiautomatic Polarity Reversal in Memory Mode
The polarity parameter is set to AUTO.
If testing is to be conducted with all polarity variants, automatic
polarity changing takes place after each measurement after sav-
ing.
Polarity variants can be skipped by pressing the I∆N key at the
instrument.
Select value / U/M.
Select value / U/M.
↵ Accept value / U/M.
Delete characters.
✓ Save value (to list)
Select editable value.
Select editable value.
Select the EDIT menu.
3
4
L1-N
L2-N
L3-N
L1-L2
L2-L3
L1-L3
L1-PE
L2-PE
L3-PE
N-PE
L+N-PE
L1-N
L2-N
L3-N
L1-L2
L2-L3
L1-L3
Z
L-PE
Z
L-N
L1-PE
L2-PE
L3-PE
R
INS
L1-PE
L2-PE
L3-PE
N-PE
L1-N
L2-N
L3-N
L1-L2
L2-L3
L1-L3
U
L1-N
L2-N
L3-N
L1-L2
L2-L3
L1-L3
L1-PE
L2-PE
L3-PE
N-PE
L+N-PE
L1-N
L2-N
L3-N
L1-L2
L2-L3
L1-L3
Z
L-PE
Z
L-N
L1-PE
L2-PE
L3-PE
R
INS
L1-PE
L2-PE
L3-PE
N-PE
L1-N
L2-N
L3-N
L1-L2
L2-L3
L1-L3
U