DL9110
DL9118
Multifunction
installation tester
Operating Instructions
Revision 1
DL9110 / DL9118 Operating Instructions
Figure 1 DL9110 / DL9118 Overview
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DL9110 / DL9118 Operating Instructions
Figure 2 Earth Continuity/Insulation Measurement
Figure 3 Voltage measurement using test probes
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DL9110 / DL9118 Operating Instructions
Figure 4 Voltage, RCD, Zs and line impedance measurement at a
mains outlet
Figure 5 Voltage, RCD, Zs, Ze and line impedance measurement at a
distribution board
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DL9110 / DL9118 Operating Instructions
Figure 6 Phase to phase impedance/PSC measurement (DL9118 only)
Figure 7 Phase rotation (DL9118 only)
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DL9110 / DL9118 Operating Instructions
Limited Warranty & Limitation of Liability
DI-LOG Test Equipment guarantees this product to be free from
defects in material and workmanship under normal use and service for
a period of 2 year. The period of warranty will be effective at the date of
purchase.
(c) Copyright 2018
All rights reserved. Nothing from this edition may be multiplied, or
made public in any form or manner, either electronically, mechanically,
by photocopying, recording, or in any manner, without prior written
consent from DI-LOG. This also applies to accompanying drawings and
diagrams.
Due to a policy of continuous development DI-LOG reserves the right
to alter the equipment specification and description outlined in this
publication without prior notice and no part of this publication shall be
deemed to be part of any contract for the equipment unless specifically
referred to as an inclusion within such contract.
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DL9110 / DL9118 Operating Instructions
Table of Contents
Limited Warranty & Limitation of Liability ............................................... 6
Table of Contents .................................................................................... 7
Introduction ............................................................................................. 9
1 User Notes ........................................................................................ 10
2 Safety Notes ...................................................................................... 11
3 Accessories ....................................................................................... 12
3.1 Standard Accessories ................................................................ 12
3.2 Optional Accessories ................................................................. 12
4 Unit Description ................................................................................ 13
4.1 Identifying parts of the unit ........................................................ 13
4.2 LCD display ............................................................................... 14
5 Using the DL9110 / DL9118 .............................................................. 16
5.1 Power On ................................................................................... 16
5.2 Battery Health Check ................................................................. 16
5.3 Remote probe (only supplied with DL9118) .............................. 16
5.4 Continuity Tests ......................................................................... 16
5.5 Insulation Resistance Tests ....................................................... 18
5.6 Voltage Measurement and Phase Rotation ............................... 19
5.7 Single Phase High Current Earth Loop Impedance / Line
Impedance ........................................................................................ 19
5.8 Three Phase Line Impedance (DL9118 only) ............................. 21
5.9 Non trip Earth Loop Impedance / Line Impedance ................... 22
5.10 Auto RCD Test Sequence ........................................................ 23
5.11 RCD Trip Time Tests ............................................................... 25
5.12 RCD trip current (Ramp) Tests ................................................ 27
6 Electrical Specifications .................................................................... 29
6.1 Earth Continuity ......................................................................... 29
6.2 Insulation Resistance ................................................................. 29
6.3 Earth Loop Impedance .............................................................. 29
6.4 Line Impedance ......................................................................... 30
6.5 RCD ........................................................................................... 30
6.6 Voltage/Frequency Measurement ............................................. 30
7 Environmental Conditions ................................................................. 31
8 Maintenance ...................................................................................... 32
8.1 Preparing to work on the DL9110 / DL9118. ............................. 32
8.2 Securing the DL9110 / DL9118 ................................................. 32
8.3 Cleaning ..................................................................................... 32
8.4 Battery Replacement ................................................................. 33
8.6 Service and Calibration. ............................................................ 34
8.7 Spare Parts. ............................................................................... 35
Appendix A ............................................................................................ 36
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DL9110 / DL9118 Operating Instructions
Disposal of Old Product
This product has been designed and manufactured with high quality
materials and components that can be recycled and reused.
Please familiarise yourself with the appropriate local separate collection
system for electrical and electronic products.
Please dispose of this product according to local regulations. Do not
dispose of this product along with normal waste material. The correct
disposal of this product will help prevent potential negative
consequences for the environment and human health.
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DL9110 / DL9118 Operating Instructions
Introduction
The DL9110 / DL9118 is a hand held, battery powered, multi-function
electrical installation test instrument capable of performing a
comprehensive range of tests, including:
Earth Continuity @ 200mA
Insulation Resistance at 250V, 500V and 1000V (1000V in DL9118 only)
Voltage
Frequency
Phase rotation (DL9118 only)
RCD Trip Time at ½I∆n, I∆n and 5xI∆n
RCD Trip current
Non trip Zs and PFC measurement on RCD protected circuits
High current Ze and PFC on non RCD protected circuits
Phase to neutral impedance and PSC
Phase to phase impedance and PSC (DL9118 only)
Power socket wiring polarity
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DL9110 / DL9118 Operating Instructions
1 User Notes
This instrument and its operating instructions are intended for use
by adequately trained personnel.
The following symbols are used in these operating instructions and on
the DL9110 / DL9118.
Warning of electrical danger!
Indicates instructions must be followed to avoid danger to
persons.
Important, follow the documentation! This symbol indicates
that the operating instructions must be adhered to in order to
avoid danger.
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DL9110 / DL9118 Operating Instructions
2 Safety Notes
This DL9110 / DL9118 is fully compliant with the requirements of:
BS EN 61010-1: 2010
BS EN 61010-2-30:2010
BS EN 61557 part 1, 2, 3, 4, 6, 7 and 10.
In order to ensure safe operation of this instrument, all notes and
warnings in these instructions must be observed at all times.
The DL9110 / DL9118 has been designed to make
measurements in a dry environment.
The DL9110 / DL9118 may be used to test circuits with a
maximum over-voltage Category III, 300 V AC/DC with
reference to earth.
High voltages are present at the probe tips of the DL9110
/ DL9118 during insulation resistance measurement.
Always hold test probes above the hand guards.
The DL9110 / DL9118 and all associated cables and leads
must be checked for signs of damage before equipment
is operated.
Prior to any resistance measurement, always ensure that
the circuit under test is electrically isolated.
Where safe operation of the DL9110 / DL9118 is no longer possible it
should be immediately shut down and secured to prevent accidental
operation.
It must be assumed that safe operation is no longer possible:
- if the instrument or leads show visible signs of damage or
- the instrument does not function or
- after long periods of storage under adverse environmental conditions.
If the DL9110 / DL9118 is used in a manner not specified
by this document then the protection provided by the
equipment may be impaired.
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DL9110 / DL9118 Operating Instructions
3 Accessories
3.1 Standard Accessories
The DL9110 / DL9118 is supplied with the following items:
DL9110 or DL9118 unit
Padded neck strap
Professional carry case
DI-LOG mains lead
1.2 M black test lead
1.2 M red test lead
1.2 M green test lead
Black crocodile clip
Red crocodile clip
Green crocodile clip
Remote probe with test button (DL9118 only)
MN1500 (AA) 1.5v Batteries x 6
Spare 1.6A 1000V HRC FF FuseOperating Instruction Manual
Calibration certificate
3.2 Optional Accessories
1.6A 1000V HRC FF Fuse
Do not open unit, no other serviceable parts.
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DL9110 / DL9118 Operating Instructions
4 Unit Description
The DL9110 / DL9118 is a hand held, multi-function electrical
installation test instrument, capable of performing all of the required
electrical tests. Tests are selected using the colour coded rotary
switch.
4.1 Identifying parts of the unit
The numbering below refers to figure. 1
1. Rotary Switch
a. Voltage, Frequency and Phase Rotation
b. Insulation resistance @ 1000V (DL9118 only)
c. Insulation resistance @ 500V
d. Insulation resistance @ 250V
e. Continuity @ 200mA
f. Off
g. High current Ze/Zs and PSC/PFC
h. Non-trip Zs and PFC
i. Auto RCD sequence
j. RCD trip time @ ½ I∆N
k. RCD trip time @ I∆N
l. RCD trip time @ 5I∆N
m. RCD trip time (ramp test)
2. LCD Display
3. Function keys F1, F2, F3 and F4
4. TEST key
5. Test lead input (RED)
6. Test lead input (GREEN)
7. Test lead input (BLACK)
Note: The function performed by keys F1 – F4 depends upon
the rotary switch position. For each rotary switch
position, the left hand side of the LCD display indicates
the function of the key above.
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DL9110 / DL9118 Operating Instructions
4.2 LCD display
1. Icons for function key F1. These icons are used to display the
available options for the selected test. Repeatedly pressing
function key F1 cycles through the available options.
2. Icons for function key F2. These icons are used to display the
available options for the selected test. Repeatedly pressing
function key F2 cycles through the available options.
3. Icons for function key F3. These icons are used to display the
available options for the selected test. Repeatedly pressing
function key F3 cycles through the available options.
4. Icons for function key F4. These icons are used to display the
available options for the selected test. Repeatedly pressing
function key F4 cycles through the available options.
5. Zs/Ze progress indicator
6. RCD test icons. These icons display the selected RCD test
function.
7. RCD status. Indicates when the RCD has tripped during an
RCD test.
8. Phase sequence indicator
9. Battery status indicator. Shows the amount of charge in the
batteries.
10. Secondary display.
11. Primary display
12. Mains supply status icons. These icons indicate the status of
the mains supply between line and earth (L-PE), line and
neutral (L-N) and neutral and earth (N-PE) during RCD and
Loop tests.
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DL9110 / DL9118 Operating Instructions
Note: Testing is inhibited if the mains supply is incorrect.
13. Warning Icons. These icons are used to inform the user of the
potential of any hazard or warning which may restrict the
operation of the DL9110 / DL9118. Details are provided in the
relevant parts of these operating instructions.
14. Fuse warning. Indicates if the internal fuse has blown.
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DL9110 / DL9118 Operating Instructions
5 Using the DL9110 / DL9118
5.1 Power On
To turn the DL9110 / DL9118 on simply rotate the rotary switch to the
required test position.
5.2 Battery Health Check
The DL9110 / DL9118 will automatically perform battery health checks
periodically or when a new test type is selected.
Note: When the battery symbol is flashing all tests will be inhibited
and the batteries should be replaced as described in section
8.4.
5.3 Remote probe (only supplied with DL9118)
The remote probe can be used in place of the standard 4mm red test
lead. When the remote probe is connected, the TEST button on the
probe performs the same function as the TEST key on the DL9110 /
DL9118. Either TEST button can be used to initiate a measurement.
5.4 Continuity Tests
Always ensure that the circuit under test is electrically
isolated.
Measurements can be adversely affected by impedances
of additional operating circuits connected in parallel or by
transient currents.
If the test probes are connected across a voltage of >30V
ac/dc then the DL9110 / DL9118 will automatically display
the voltage between the probes, the warning buzzer will
sound and the TEST key is inhibited.
Rotate the rotary switch until the Continuity test is selected.
When the continuity test is selected, the DL9110 / DL9118 will display
the user selectable test options for approximately 1 second; Buzzer,
Lead Zero and Auto Start. If the Buzzer or Lead Zero was previously
enabled then the icon will remain on the display when the continuity
test is selected.
Functions keys F1-F4 have are used to select the options below:
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DL9110 / DL9118 Operating Instructions
F1 F2 F3 F4
Buzzer Not used Lead Zero Auto start
Buzzer (F1)
When enabled, the Buzzer will sound when the continuity measurement
is less than 20 ohms.
Lead Zero (F3)
The instrument can automatically compensate for the resistance of the
test leads as follows:
Fit the supplied crocodile clips to the red and black test probes and
connect the test probes firmly together. Press and hold the Lead Zero
(F3). The measured resistance of the test leads is shown in the primary
display until a beep is heard and the Lead Zero icon is shown on the
display. All subsequent measurements will automatically include
compensation for the test lead resistance until the function is disabled
by pressing function key F3.
Note: A maximum test lead resistance of 10 ohms can nulled out. If
the test lead resistance is greater than 10 ohms an error
beep will indicate that the Lead Zero function has failed and
the display icon will not be shown.
Note: For ease of use, the DL9118 will store the Lead Zero
compensation when switched off and recall this value when
next switched on. The stored value is only applicable to the
test leads used when the compensation measurement was
made. If the test leads are replaced the Lead Zero function
should be repeated using the replacement test leads.
Auto Start (F4)
When Auto start is activated the AUTO icon is shown on the display.
Continuity measurements will start automatically when the test probes
are connected to a resistance less than 20kohms.
Note: If the probes are connected to a resistance greater than
20kohms in Auto mode the test will not start.
Note: If the probes are connected to a voltage >30V ac/dc in Auto
mode the test will not start. The measured voltage will be
shown in the primary display..
The Auto Start function will automatically make measurements when
the test leads are connected to a resistance.
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DL9110 / DL9118 Operating Instructions
When the Auto Start function is disabled press and hold the TEST key
to make a continuity measurement. The resistance between the test
probes is shown until the TEST key is released.
During a measurement, the measured value is shown in the primary
display and the test voltage is shown in the secondary display.
5.5 Insulation Resistance Tests
Always ensure that the circuit under test is electrically
isolated.
If the test probes are connected across a voltage of >30V
then the DL9110 / DL9118 will automatically display the
voltage between the probes, the warning buzzer will
sound and the TEST key is inhibited.
Use the rotary switch to select either the 250V, 500V or 1000V MΩ
(DL9118 only) test.
The DL9110 / DL9118 will display the Test Lock and battery symbol for
1 second. If the Test Lock feature is required, it should be activated as
described below.
Functions keys F1-F4 have are used to select the options below:
F1 F2 F3 F4
Buzzer Test Lock Not used Not used
Buzzer (F1)
When enabled, the Buzzer will sound when the continuity measurement
is less than or equal to 1Mohm.
Test Lock (F2)
The Test Lock is used to ‘lock’ the DL9110 / DL9118 in a continuous
measurement mode, with a single press of the TEST key. When Test
Lock is enabled the LCD shows the padlock icon. When Test Lock is
active the TEST key is locked until the option is disabled or the rotary
switch is moved to another position.
To enable the Test Lock mode, press the F2 key before the TEST key is
pressed or press F2 and the TEST simultaneously.
To disable Test Lock, press F2 or turn the rotary switch to another
position.
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DL9110 / DL9118 Operating Instructions
To make an insulation resistance measurement, press and hold the
TEST key. The resistance between the test probes is displayed until the
TEST key is released. Alternatively, use the Test Lock function to allow
measurements to be started or stopped with single press of the TEST
key.
During a measurement, the measured value is shown in the primary
display and the measured test voltage is shown in the secondary
display.
5.6 Voltage Measurement and Phase Rotation
Rotate the rotary switch until the V test is selected. The DL9110 /
DL9118 will automatically measure any voltage present on the test
probes. The TEST key is not required.
The function keys do not perform any operations while in Voltage
mode.
When an AC voltage is applied to the test probes, the frequency of the
measured voltage is shown in the secondary display.
DL9118 only: When a 3 phase voltage is connected to the test probes,
the voltage between the red and black is displayed in the primary
display and the phase sequence icon is shown on the display. When
the test probes are connected as follows: RED to L1, GREEN to L2,
BLACK to L3 the display icon will show L1 L2 L3.
5.7 Single Phase High Current Earth Loop Impedance / Line
Impedance
The DL9110 / DL9118 will only allow the Earth Loop
Impedance test to be performed if the correct voltages
are detected between line-earth (L-PE illuminated), lineneutral (L-N illuminated) and neutral-earth (N-PE not
illuminated).
Rotate the rotary switch until Ze/Zs High is selected. Functions keys
F1-F4 have are used to select the options below:
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DL9110 / DL9118 Operating Instructions
F1 F2 F3 F4
L-PE loop/
Not used Not used Auto Start
L-N loop
select
Note: When the Ze/Zs High switch position is selected, the DL9110
/ DL9118 will default to the last used setting, even if it has
been switched off.
L-PE/L-N (F1)
Press the function key F1 to select either the Earth Loop Impedance
test (L-PE) or the Line Impedance test (L-N).
Auto Start (F4)
When Auto start is activated the AUTO icon is shown on the display.
Loop measurements will automatically start approximately 4s after the
DL9110 / DL9118 is connected to correct mains supply via a mains
plug or the test probes. The Auto Start function remains enabled if the
switch position is changed or the DL9110 / DL9118 is powered off. To
disable the Auto Start function press F4.
Note: If the mains supply is removed with the 4s countdown the
loop test will not start.
Note: If the mains power is removed during the loop measurement,
the test will terminate and the display will show “RCD” to
indicate that power has been removed.
To begin the test, press and release the TEST key or select Auto Start
using F4.
During the test, progress is shown by the rotating progress icon. When
the test is complete, the loop measurement is shown in the primary
display and the calculated Prospective Fault Current (PFC) or
Prospective Short-circuit Current (PSC) is shown in the secondary
display.
Note: The DL9110 / DL9118 will determine the fault voltage that
may appear on the protective conductor during the test. If
the fault voltage is greater than 25V the DL9110 / DL9118 will
indicate >25V on the LCD, but the user may proceed with the
test. If the fault voltage is greater than 50V, this is indicated
on the LCD and the test is inhibited.
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DL9110 / DL9118 Operating Instructions
Note: A Line Impedance measurement is automatically made as
part of the Earth Loop Impedance test. The Line Impedance
measurement (L-N) and Prospective Short-circuit Current
(PSC) can be viewed by simply pressing function key F1,
without the need to repeat the test.
5.8 Three Phase Line Impedance (DL9118 only)
The DL9118 will only allow the Line Impedance test to be
performed if the correct voltages are detected between
line-earth (L-PE illuminated), line-line (L-N illuminated) and
line-earth (N-PE not illuminated).
Rotate the rotary switch until Ze/Zs High is selected. Functions keys
F1-F4 have are used to select the options below:
F1 F2 F3 F4
Not used Not used Not used Auto Start
Note: When the Ze/Zs High switch position is selected, the DL9118
will default to the last used setting, even if it has been
switched off.
Auto Start (F4)
When Auto start is activated the AUTO icon is shown on the display.
Loop measurements will automatically start approximately 4s after the
DL9118 is connected to correct mains supply via a mains plug or the
test probes. The Auto Start function remains enabled if the switch
position is changed or the DL9118 is powered off. To disable the Auto
Start function press F4.
Note: If the mains supply is removed with the 4s countdown the
loop test will not start.
To begin the test, press and release the TEST key or select Auto Start
using F4.
When the test is complete, the line measurement is shown in the
primary display and the calculated Prospective Short-circuit Current
(PSC) is shown in the secondary display.
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DL9110 / DL9118 Operating Instructions
5.9 Non trip Earth Loop Impedance / Line Impedance
The DL9110 / DL9118 will only allow the Earth Loop
Impedance test to be performed if the correct voltages
are detected between line-earth (L-PE illuminated), lineneutral (L-N illuminated) and neutral-earth (N-PE not
illuminated).
Rotate the rotary switch until Zs Non Trip is selected. Functions keys
F1-F4 have are used to select the options below:
F1 F2 F3 F4
L-PE loop/
Not used Not used Auto Start
L-N loop
select
Note: When the Zs Non Trip switch position is selected, the
DL9118 will default to the last used setting, even if it has
been switched off.
L-PE/L-N (F1)
Press the function key F1 to select either the Earth Loop Impedance
test (L-PE) or the Line Impedance test (L-N).
Auto Start (F4)
When Auto start is activated the AUTO icon is shown on the display.
Loop measurements will automatically start approximately 4s after the
DL9110 / DL9118 is connected to correct mains supply via a mains
plug or the test probes. The Auto Start function remains enabled if the
switch position is changed or the DL9110 / DL9118 is powered off. To
disable the Auto Start function press F4.
Note: If the mains supply is removed with the 4s countdown the
loop test will not start.
Note: If the mains power is removed during the loop measurement,
the test will terminate and the display will show “RCD” to
indicate that power has been removed.
To begin the test, press and release the TEST key or select Auto Start
using F4.
During the test, progress is shown by the rotating progress icon. When
the test is complete, the loop measurement is shown in the primary
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DL9110 / DL9118 Operating Instructions
display and the calculated Prospective Fault Current (PFC) or
Prospective Short-circuit Current (PSC) is shown in the secondary
display.
Note: The DL9110 / DL9118 will determine the fault voltage that
may appear on the protective conductor during the test. If
the fault voltage is greater than 25V the DL9110 / DL9118 will
indicate >25V on the LCD, but the user may proceed with the
test. If the fault voltage is greater than 50V, this is indicated
on the LCD and the test is inhibited.
Note: A Line Impedance measurement is automatically made as
part of the Earth Loop Impedance test. The Line Impedance
measurement (L-N) and Prospective Short-circuit Current
(PSC) can be viewed by simply pressing function key F1,
without the need to repeat the test.
5.10 Auto RCD Test Sequence
The DL9110 / DL9118 will only allow the RCD test to be
performed if the correct voltages are detected between
line-earth (L-PE illuminated), line-neutral (L-N illuminated)
and neutral-earth (N-PE not illuminated).
Potential fields from other earthing installations, large
voltages between the protective conductor and earth,
large voltage between the neutral and earth or leakage
currents in the circuit following the residual current
protection device may influence the measurement.
Equipment which is connected downstream of a residual
current protective device (RCD) may cause a considerable
extension of the operating time.
The Auto RCD test is used to automatically perform a sequence of 6
RCD trip time tests with a single press of the TEST key. Each time the
RCD trips, the sequence will automatically continue once the RCD is
reset. The sequence comprises of test at:
½I∆n / 0°
½I∆n / 180°
Ι∆n / 0°
Ι∆n / 180°
5I∆n / 0°
5I∆n / 180°
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DL9110 / DL9118 Operating Instructions
o
Functions keys F1-F4 have are used to select the options below:
F1 F2 F3 F4
Not used ac/dc/
RCL Test current
selective
AC/DC/Selective (F2)
Function key F2 is used to select the required RCD type: AC or DC
sensitive combined with standard or selective RCD types. Each time
the F2 key is pressed the next option is selected
During selective tests the DL9110 / DL9118 will display a delay timer
which counts down from 30s to 0s. Pressing the Test key or turning the
rotary switch while the DL9118 is counting will terminate the count.
ac current / standard RCD
ac current / selective RCD
dc current / standard RCD
dc current / selective RCD
RCL (F3)
The RCL (Recall) key is used to recall the results of the last automatic
RCD test performed by the DL9110 / DL9118. The LCD will update to
show all of the relevant parameters for the result displayed. Continue to
press the F3 key to rotate through the results.
½ I∆n test current / 0o
½ I∆n test current / 180o
I∆n test current / 0o
I∆n test current / 180o
5x I∆n test current / 0o
5x I∆n test current / 180
normal pre-test screen
Pressing any key while displaying a recalled measurement will return
the DL9110 / DL9118 to the normal pre-test screen.
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DL9110 / DL9118 Operating Instructions
Rated residual operating current I∆∆∆∆n (F4)
The test current can be selected by pressing the F4 key.
10mA
30mA
100mA
When the required settings have been selected, press the TEST key to
begin the sequence.
Note: The DL9110 / DL9118 will determine the fault voltage that
may appear on the protective conductor during the test. If
the fault voltage is greater than 25V the DL9110 / DL9118 will
indicate >25V on the LCD, but the user may proceed with the
test. If the fault voltage is great than 50V, this is indicated on
the LCD and the test is inhibited.
If the fault voltage is less than 50V the test sequence will proceed and
the trip times are shown in the primary display. The fault voltage is
measured and not calculated.
When the sequence is completed, the RCL key (F3) is used to recall the
measurements.
5.11 RCD Trip Time Tests
The DL9110 / DL9118 will only allow the Earth Loop
Impedance test to be performed if the correct voltages
are detected between phase-neutral (PN illuminated),
phase-earth (PE illuminated) and neutral-earth (NE not
illuminated).
Leakage currents in the circuit following the residual
current protection device may influence the
measurement.
Note: The DL9110 / DL9118 will determine the fault voltage that
may appear on the protective conductor during the test. If
the fault voltage is greater than 25V the DL9110 / DL9118 will
indicate >25V on the LCD, but the user may proceed with the
test. If the fault voltage is great than 50V, this is indicated on
the LCD and the test is inhibited.
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DL9110 / DL9118 Operating Instructions
Use the rotary switch to select the ½ I∆n, I∆n or 5 I∆n test position.
The ½ I∆n test will perform the RCD test with a current of 50% of that
indicated on the LCD.
The I∆n test will perform the RCD with the test current indicated on the
LCD.
The 5 I∆n test will perform the RCD with 500% that which is indicated
on the LCD.
F1 F2 F3 F4
0o / 180o ac/dc/
Not used Test current
selective
0o / 180o (F1)
Use the F1 key to alternate between the starting angle of the current.
All RCD tests will start on zero crossing.
AC/DC/Selective (F2)
Function key F2 is used to select the required RCD type: AC or DC
sensitive combined with standard or selective RCD types. Each time
the F2 key is pressed the next option is selected
During selective tests the DL9110 / DL9118 will display a delay timer
which counts down from 30s to 0s. Pressing the Test key or turning the
rotary switch while the DL9110 / DL9118 is counting will terminate the
count.
ac current / standard RCD
ac current / selective RCD
dc current / standard RCD
dc current / selective RCD
Rated residual operating current I∆∆∆∆n (F4)
The test current can be selected by pressing the F4 key.
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DL9110 / DL9118 Operating Instructions
10mA
30mA
100mA
300mA
500mA
Please note that the DL9110 / DL9118 is not capable of performing all
of the different test currents for all of the different manual RCD settings.
10mA 30mA 100mA 300mA 500mA
½ I∆N
1 I∆N
5 I∆N
5.12 RCD trip current (Ramp) Tests
The DL9110 / DL9118 will only allow the Earth Loop
Impedance test to be performed if the correct voltages
are detected between phase-neutral (PN illuminated),
phase-earth (PE illuminated) and neutral-earth (NE not
illuminated).
Leakage currents in the circuit following the residual
current protection device may influence the
measurement.
Note: The DL9110 / DL9118 will determine the fault voltage that
may appear on the protective conductor during the test. If
the fault voltage is greater than 25V the DL9110 / DL9118 will
indicate >25V on the LCD, but the user may proceed with the
test. If the fault voltage is great than 50V, this is indicated on
the LCD and the test is inhibited.
F1 F2 F3 F4
0o / 180o AC/DC/Selective Not used Test current
o
0
/ 180o (F1)
Use the F1 key to alternate between the starting angle of the current.
All RCD tests will start on zero crossing.
- 27 -
DL9110 / DL9118 Operating Instructions
AC/DC/Selective (F2)
Function key F2 is used to select the required RCD type: AC or DC
sensitive combined with standard or selective RCD types. Each time
the F2 key is pressed the next option is selected
During selective tests the DL9110 / DL9118 will display a delay timer
which counts down from 30s to 0s. Pressing the Test key or turning the
rotary switch while the DL9110 / DL9118 is counting will terminate the
count.
Rated residual operating current I∆∆∆∆n (F4)
The test current can be selected by pressing the F4 key.
10mA
30mA
100mA
300mA
500mA
- 28 -
DL9110 / DL9118 Operating Instructions
6 Electrical Specifications
6.1 Earth Continuity
Test Voltage Open Circuit >4V
Test Current into 2Ω >200mA
Display Range
Measuring Range
(EN 61557-4)
Resolution
0.00Ω - 199Ω
0.01Ω – 199Ω
0.01Ω maximum
Accuracy ±2% ±5 digits
Number of repeat tests as
Approx 4000
per IEC61557-4
6.2 Insulation Resistance
Test Voltage 250V/500V/1000V
(1000V is DL9118 only)
Test Voltage Specification -0% +20% (open circuit)
Test Voltage @ 1mA
>1mA into UN x (1000Ω/V)
Test Current Short Circuit <2mA
Display Range
Measuring Range
(EN 61557-2)
Resolution
0.01MΩ - 199MΩ
0.05MΩ – 199MΩ
0.01MΩ maximum
Accuracy ±5% ±5 digits
Test Voltage Indication
±5%
Accuracy
Number of repeat tests as
Approx 3000
per IEC61557-2
6.3 Earth Loop Impedance
Supply Voltage 195 – 253V, 45Hz – 65Hz
Nominal Test Current <15mA (non-trip test)
3A (high current test)
Display Range
Measuring Range
(EN 61557-3)
Resolution
0.01Ω - 2000Ω
0.10Ω - 1999Ω (high current)
1.00Ω – 1999Ω (non-trip)
0.01Ω maximum
Accuracy ±5%±5d (high current)
±5%±12d (non-trip, 1.00Ω - 1.99Ω)
±5%±12d (non-trip, 2.0Ω - 19.9Ω)
±5%±5d (non-trip, 20Ω - 1999Ω)
PFC Range 0 – 26kA
- 29 -
DL9110 / DL9118 Operating Instructions
6.4 Line Impedance
Supply Voltage 195V – 253V, 45Hz – 65Hz
328V - 440V, 45Hz – 65Hz
Nominal Test Current 3A
Display Range
Measuring Range
Resolution
0.01Ω - 2000Ω
0.1Ω - 1999Ω
0.01Ω maximum
Accuracy ±5% ±5 digits
PFC Range 0kA – 26kA
6.5 RCD
Supply Voltage 195V – 253V, 45Hz – 65Hz
Nominal Test Currents 10mA, 30mA, 100mA, 300mA,
500mA
Test Current Accuracy
-0% +10% at I∆n and 5I∆n
-10% +0% at ½ I∆n
Trip Time Ranges
0ms – 2000ms, ½ I∆n
0ms – 300ms, I∆n General
0ms – 500ms, I∆n Selective
0ms – 40ms, 5I∆n
Trip Time Accuracy ±5% ±2 digits
Ramp Current Range
Trip Current Measurement
½ I∆n to 1.1 I∆n
10%
Accuracy
6.6 Voltage/Frequency Measurement
Display Range 0V – 440V
Voltage Measuring Range 0V – 440V
Resolution 1V
Accuracy ±5% ±2 digits
Frequency Range 45Hz – 65Hz
Frequency Accuracy ±1Hz
- 30 -
DL9110 / DL9118 Operating Instructions
7 Environmental Conditions
The DL9110 / DL9118 has been designed to perform tests and
measurements in a dry environment.
Maximum barometric elevation for making measurements is 2000M.
Overvoltage category IEC 60664/IEC 61010, 300V Category III.
Pollution degree 2 according to IEC 61010-1.
Protective system IP40 according to IEC 60529.
Electromagnetic compatibility (EMC). Interference immunity and
emitted interference conforming to IEC 61326-1.
Operating temperature range of 0°C to 40°C, without moisture
condensation.
The DL9110 / DL9118 can be stored at any temperature in the range 25°C to +65°C (relative humidity up to 90%). The batteries should be
taken out of the instrument for storage.
Operating Altitude 0 to 2000 metres
- 31 -
DL9110 / DL9118 Operating Instructions
8 Maintenance
Before opening the DL9110 / DL9118 ensure that it is
disconnected from all voltage! Electric shock danger!
8.1 Preparing to work on the DL9110 / DL9118.
Make the DL9110 / DL9118 is voltage free as follows, before opening
the instrument;
Power the unit off using the rotary switch by selecting the Off position
on the rotary switch.
Disconnect all of the test leads from the unit
8.2 Securing the DL9110 / DL9118
Under certain conditions safe operation of the DL9110 / DL9118 can no
longer be assumed:
Visible damage of the instrument case.
Incorrect measurement results.
Recognisable abuse to the instrument due to prolonged storage under
improper conditions.
Recognisable abuse to the instrument due to extraordinary
transportation stress.
Check the battery compartment for signs of battery electrolyte leakage.
In these cases, the DL9110 / DL9118 should be immediately switched
off, disconnected from any test or measurement function and secured
to prevent any further use.
8.3 Cleaning
Clean the external case of the DL9118 with a clean dry cloth.
- 32 -
DL9110 / DL9118 Operating Instructions
Avoid using solvents and abrasive scouring agents to clean the external
case of the DL9110 / DL9118.
Check the battery contacts and compartment are free of electrolytic
contamination.
Any contamination of the battery contacts or compartment should be
cleaned with a dry cloth.
8.4 Battery Replacement
Before opening the DL9110 / DL9118 ensure that it is
disconnected from all voltage! Electric shock danger!
Power the unit off by selecting the Off position on the rotary switch.
Disconnect all the test leads from the unit
Position the DL9110 / DL9118 face down and release the 4 captive
screws in the battery compartment cover.
Remove the battery compartment cover.
Remove the discharged batteries from the compartment.
Fit a new set of MN1500 (AA) 1.5v batteries.
Relocate the battery cover over the battery compartment and fasten in
position with the battery cover captive screws.
- 33 -
DL9110 / DL9118 Operating Instructions
8.5 Replacing the Fuse.
Before opening the DL9110 / DL9118 ensure that it is
disconnected from all voltages! Electric shock danger!
All replacement fuse types are specified for ratings and
size on the battery compartment cover on the DL9110 /
DL9118.
Power the unit off by selecting the Off position on the rotary switch.
Disconnect all the test leads from the unit.
Position the DL9110 / DL9118 face down and release the captive 4
screws in the battery compartment cover.
Remove the battery compartment cover.
Lift one end of the fuse out of the fuse holder with the help of a flat
bladed screwdriver.
Lift the defective fuse completely out of the fuse holder.
Insert a new fuse as described and specified by the text on the battery
compartment cover.
Ensure that the new fuse is seated and centred in the fuse holder.
Relocate the battery cover over the battery compartment and fasten in
position with the battery cover captive screws.
8.6 Service and Calibration.
To maintain the specified accuracy of the measurement results, the
instrument must be recalibrated at regular intervals by either the
manufacturer or an authorised Service Agent. We recommend a
recalibration period of one year.
- 34 -
DL9110 / DL9118 Operating Instructions
8.7 Spare Parts.
Part No.
3 wire lead set c/w croc clips LS3W9073
Mains lead ML9073
Remote Probe RP9118
Carrying Case CC9118
1.6A 1000V HRC FF Fuse
For help or advice on Service and Calibration contact:
Service Department
Di-Log Test Equipment
28 Wheel Forge Way
Trafford Park
Manchester
M17 1EH
Tel: 0161 877 0322
Fax: 0161 877 1614
email: support@dilog.co.uk
web: dilog.co.uk
- 35 -
DL9110 / DL9118 Operating Instructions
IEC61557
-
2: Insulation
Intrinsic
error or
Reference conditions or specified
Designation
Intrinsic error
Reference conditions
A
Position
Supply voltage
At the limits stated by the manufacturer
Temperature
Operating Error
IEC61557
-
3: Loop Impedance
Intrinsic error or
Reference conditions or specified
Designation
Intrinsic error
Reference conditions
A
Position
Supply voltage
At the limits stated by the manufacturer
Temperature
0oC and 40
o
C
Phase Angle
At a phase angle 0
o
to 18o
System Phase
o
System Phase
o
System frequency
99% to 101% of the nominal frequency
System voltage
85% to 110% of the nominal voltage
Harmonics
o
DC Quantities
Add additional dc quantities of 0.5% of
Operating Error
IEC61557
-
4: Resistance of e
arth connection and equipotential bonding
Intrinsic error or
Reference conditions or specified
Designation
Intrinsic error
Reference conditions
A
Position
Reference position ±90
o
E1
Supply voltage
At the limits s
tated by the manufacturer
E2
Temperature
E3
Operating Error
Appendix A
influence quantity
influence quantity
Angle
Angle
operating range
code
Reference position ±90o E1
E2
0oC and 40oC E3
23222
)EEE 1.15|A|(B
+++±=
1
operating range
code
Reference position ±90o E1
E2
E3
E6
At a system phase angle 0o to 18
at
E
the bottom of the measuring range.
At a system phase angle 0o to 30
at
E
the bottom of the measuring range.
E7
E8
5% of 3rd harmonic at 0
6% of 5th harmonic at 180
angle.
5% of 7th harmonic at 0
nominal voltage of the distribution
phase angle.
o
phase
o
phase angle.
E9
E10
system in both polarties.
2102928272623222
)EEEEEEEE 1.15|A|(B
1
++++++++±=
6.1
6.2
influence quantity
operating range
0oC and 40oC
code
23222
)EEE 1.15|A|(B
+++±=
1
- 36 -
DL9110 / DL9118 Operating Instructions
IEC61557
-
6: Residual current devices (RCD) in TT and TN systems
Intrinsic error or
Reference conditions or specified
De
signation
Intrinsic error
Reference conditions
A
Position
Reference position ±90
o
E1
Supply voltage
At the limits stated by the manufacturer
E2
Temperature
0oC and 40
o
C E3
Resistance of the
Within the limits stated by the
E5
System voltage
85% to 110% of the nominal voltage
E8
Operating Error
influence quantity
probes
operating range
manufacturer
code
282523222
)EEEEE 1.15|A|(B
1
+++++±=
- 37 -
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