VOLTAGE TESTER
• Voltage test up to 1000V AC/DC
• Single-pole phase test
• Continuity test
• Rotary field indication
• Polarity indication
• Hold function
• CAT III 1000V
• CAT IV 600V
• LCD backlight
• Clear audible tone
• Built in torch
• Probe tip protection cap
OPERATOR’S MANUAL
ORDER CODE: OXD-516-8260F
CZ HU PL SK TH cromwell.co.uk
SYMBOLS USED
Warning of a potential danger, comply with Operator’s manual.
Caution! Dangerous voltage. Danger of electric shock.
Double insulation.
Suitable for live working.
Conforms to European Union Directives.
Measurement Category III is applicable to test and measuring circuits connected to the
distribution part of the building’s low- voltage MAINS installation.
Measurement Category IV is applicable to test and measuring circuits connected at the
source of the building’s low-voltage MAINS installation.
SAFETY INFORMATION
• Reference. Please use utmost attention.
• Do not exceed the maximum allowable input range of any function
• Insulated personnel body protective equipment up to 1000V.
• Unauthorised persons are not to be allowed to disassemble the Voltage Tester.
In order to avoid electrical shock, the valid safety and VDE regulations regarding excessive
contact voltages must receive utmost attention, when working with voltages exceeding
120V (60V) DC or 50V (25V) rms AC. The values in brackets are valid for limited ranges (as
for example medicine and agriculture).
Prior to measurement ensure that the test leads and the Voltage Tester are in perfect condition.
When using this instrument keep fingers behind the finger guards on the probes
and do not touch the probe tips.
This instrument may only be used within the ranges specified and within low voltage
systems up to 1000V.
Prior to usage, ensure that the Voltage Tester is fully working (e.g. on known voltage source).
The Voltage Tester is not to be used, if the battery compartment is open.
The Voltage Tester must be kept dry and clean.
The Voltage Tester may no longer be used if one or several functions fail or if no
functionality is indicated.
Do not use in damp conditions.
A Perfect display is only guaranteed within a temperature range of -10°C up to +55°C,
at relative humidity of <85%.
If the operator’s safety cannot be guaranteed, the instrument must be removed from service
and protected against use.
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Safety can no longer be insured if the Voltage Tester:
• Shows obvious damage
• Does not carry out the desired measurements
• Has been stored for too long under unfavourable conditions
• Has been subjected to mechanical stress during transport.
All relevant statutory regulations must be adhered to when using this instrument
Safety Advice
• Depending on the internal impedance of the Voltage Tester there will be a different capability
of indicating the presence or absence of operating voltage in case of the presence of
interference voltage.
• A Voltage Tester of relatively low internal impedance, compared to the reference value of
100kΩ, will not indicate all interference voltages having an original voltage value above the
ELV (Extra Low Voltage) level. When in contact with the parts to be tested, the Voltage Tester
may discharge temporarily the interference voltage to a level below the ELV, but it will be back
to the original value when the Voltage Tester is removed.
• When the indication “voltage present” does not appear, it is highly recommended installing
earthing equipment before work.
• A Voltage Tester of relatively high internal impedance, compared to the reference value of 100kΩ,
may not permit to clearly indicate the absence of operating voltage in case of presence of interference
voltage.
• When the indication “voltage present” appears on a part that is expected to be disconnected
of the installation, it is highly recommended confirming by another means (e.g. use of an
adequate voltage detector, visual check of the disconnecting point of the electric circuit, etc.)
that there is no operating voltage on the part to be tested and to conclude that the voltage
indicated by the Voltage Tester is an interference voltage.
• A Voltage Tester declaring two values of internal impedance has passed a performance test
of managing interference voltages and is (within technical limits) able to distinguish operating
voltage from interference voltage and has a means to directly or indirectly indicate which type
of voltage is present.
Appropriate Usage
The instrument may only be used under those conditions and for those purposes for which it
was conceived. For this reason, in particular the safety references, the technical data including
environmental conditions and the usage in dry environments must be followed. When modifying
or changing the Voltage Tester, the operational safety is no longer ensured. The Voltage Tester
may only be opened by an authorised service technician, e.g. for fuse replacement. The Voltage
Tester is designed to be used by skilled persons and in accordance with safe methods of work.
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SPECIFICATIONS:
LEDS
LED voltage range
LED resolution
Tolerances
Frequency range
Response time
Auto power on
LCD
LCD display
Voltage range
Resolution
Tolerances
Frequency range
Response time
Auto power on
Range detection
Polarity detection
Internal basic load
impedance peak current
Operation time
Recovery time
Continuity Test
Accuracy
Test current
Single-pole Phase Test
Frequency range
ROTARY FIELD INDICATION
Voltage range (LEDs)
Frequency range
Measurement principle
Power supply
Power consumption
Temperature range
Humidity
Over voltage protection
Measurement category
Protection degree
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12V to 1000V AC/DC
±12,24,50,120,230, 400, 690,1000V AC/DC
-30% to 0% of reading
40HZ to 400HZ
≤1 second
Auto power on ≥12V AC/DC
1999 counts (3 1/2 digit ) LCD display with bar graph & backlight
6V to 690V AC/DC
1V AC/DC
DCV: ±1.0% of reading ±3 digit
ACV: ±1.5% of reading ±5 digit
40HZ to 400HZ
≤1 second
Auto power on ≥6V AC/DC
Automatic
Full range
Maximum 3.5mA at 690V 200kΩ / Is <3.5 mA (no RCD tripping)
Duration Time = 30 seconds
Recovery Time = 240 seconds
0 to 400kΩ
nominal resistance +50%
≤5 µA
100V to 1000V AC
50Hz to 60Hz
100…1000V
50/60Hz
Double-pole and contact electrode
2 x 1.5V “AAA” batteries
Max. 30mA / approx. 250mW
-10°C up to +55°C
Max. 85% relative humidity
1000V AC/DC
CAT lll 1000V/CAT IV 600V
IP64
PRODUCT FEATURES
1. Handle test probe - (L 1)
2.
Instrument test probe + (L2)
3.
LEDs for voltage display
4.
Torch
5.
LED for AC voltage
6.
LED for positive voltage
7.
LED for “
” warning voltage
mode display
8.
LED for negative voltage
9.
LED for left rotary field
10. LED for right rotary field
11. LED for continuity
12. 1999 Counts LCD display
13. HOLD Button
14. Torch on/off button
15. Battery cover
16. Battery cover release screw
17. Finger guards
18. Probe tip Protective cap(with storage compartments
for probe lip cover and probe tip extension)
19. Probe tip cover
20. Probe tip extension (diameter4 mm, screw-on)
BEFORE USING THE VOLTAGE TESTER
• Ensure that the Voltage Tester is in perfect condition. For example, keep an eye out for a broken
housing or leaking batteries.
• Before using at locations with a high background noise level, it has to be determined whether the
audible signal is clear.
• Always carry out a function test before using the Voltage Tester, see below.
• Check that the Voltage Tester is functioning properly (for example at a known voltage source)
before and after every test.
• If the safety of the user cannot be guaranteed, switch off the Voltage Tester and secure it to
prevent unintentional usage.
Function test
• Connect the voltage tester probe tips for 4 to10 seconds and then disconnect. All LEDs should
light up. All segments are illuminated on the LCD display.
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VOLTAGE TEST
• Connect both test probes with power source.
• The Voltage Tester switches on automatically
when used on voltages higher than 6V.
• The voltage is displayed via LEDs. The different indicating
signals of the Voltage Tester (including the ELV limit
indication) are not to be used for measuring purposes.
• The voltage is also shown on the LCD display.
• For AC voltage, the “AC” is illuminated.
For positive voltage, the “+” is illuminated.
For negative voltage, the “-” is illuminated.
• In the case of DC voltage, the polarity of the indicated voltage relates
to the Voltage Tester probe tip.
• Once the safety extra-low voltage (50V AC /120V DC) is reached or exceeded, an acoustic signal
is emitted, and the
is illuminated.
• Once voltage is applied to the Voltage Tester, press the HOLD button, the LCD and LEDs display
shows the recorded reading. To delete the recorded value, press the HOLD button once again. The
LCD and LEDs display once again indicates the voltage currently being applied to the probe tips.
SINGLE-POLE PHASE TEST
• The single-pole phase test is only possible when batteries are installed and in good condition.
• The single-pole phase test starts at an AC voltage of approx. 1OOV (pole> 1OOV AC).
• When using single-pole phase tests to determine external conductors the display function may be
impaired under certain conditions (e.g. for insulating body protective equipment on insulation locations).
• The single-pole phase testing is not appropriate to determine whether a line is live or not. For this
purpose, the double-pole voltage test is always required.
• Connect both test probes with the power source.
• A signal sound indicates the phase.
• The “ ”LED is illuminated in the display.
CONTINUITY TEST
The continuity test is only possible when batteries are installed and in good condition.
A signal sound is audible for continuity and the LED for continuity
(11) is illuminated.
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ROTARY FIELD INDICATION
The Voltage Tester is equipped with a double-pole rotary field indicator. The rotary phase
indication is always active. The symbols “R”or “L’.’ are always displayed. However, the rotary
direction can only be determined within a three-phase system. Here, the instrument indicates the
voltage between two external conductors.
• Connect the instrument test probe with the
supposed phase L2 and the handle test probe
with the supposed phase L 1. The voltage and
the rotary field direction are displayed.
“R” signifies that the supposed phase L 1 is the
actual phase L 1 and the supposed phase L2 is
the actual phase L2.
• “L” signifies that the supposed phase L 1 is the
actual phase L2 and the supposed phase L2 is
the actual phase L 1.
• When re-testing with exchanged test
probes the opposite symbol has to be
illuminated.
HOLD FUNCTION
Press the “H” button to hold the value that shows in the LCD. Push again to turn hold off.
To save battery power the Voltage Tester will automatically turn off after 4 minutes.
MEASUREMENT POINT ILLUMINATION
The Voltage Tester is equipped with a measurement point illumination feature.
Press the button for measurement point illumination.
MAINTENANCE
Cleaning
Prior to cleaning, remove the Voltage Tester from all measurement circuits. If the instrument is dirty
after daily usage, it is advisable to clean it by using a damp cloth and a mild household detergent.
Never use acid detergents or dis solvents for cleaning.
After cleaning, do not use the Voltage Tester for a period of approx. 5 hours.
Calibration Interval
The Voltage Tester must be calibrated periodically and checked at regular intervals to ensure the
specified accuracy of measurement results. We recommend a calibration interval of one year.
Battery Replacement
If no signal sound is audible when short-circuiting the test probes, proceed with the battery
replacement.
• Completely disconnect the Voltage Tester
from the measurement circuit.
• Open the battery cover.
• Replace batteries with two new 1.5V AAA batteries.
• Close and attach the battery cover.
• Complete a function test.
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THE ENVIRONMENT
Always dispose of unwanted tools, accessories and packaging materials
in an environmentally friendly manner.
In observance of European Directive on Waste Electrical and Electronic
Equipment (WEEE) and its implementation in accordance with national law,
electrical goods that have reached the end of their life must be collected
separately and returned to an environmentally compatible recycling facility.
Do not dispose of electrical goods with domestic waste materials as inappropriate
disposal may cause potential hazards to the environment
and human health.
For further information, please contact your local authority or the retailer from
whom you purchased the product.
QUALITY GUARANTEE & WARRANTY
OXFORD PRECISION products carry a one year manufacturer’s warranty.
OXFORD PRECISION products are designed & manufactured
to the highest standards & specifications.
Assuring the quality and performance required by all sectors of industry.
OXFORD PRECISION products are fully guaranteed against faulty materials & workmanship.
Should they be found to be defective, they will either be repaired or replaced
free of charge (fair wear and tear and/or misuse excepted).
Please retain supplier invoice as proof of purchase.
DECLARATION OF CONFORMITY
We hereby certify that the OXFORD VOLTAGE TESTER
(ORDER CODE: OXD-516-8260F)
Complies with all the relevant provisions of the
EMC Electromagnetic Compatibility Directive 2014/30/EU
Standards Applied:
EN61326-1:2013, EN61326-2-2:2013
LVD Low Voltage Directive 2014/35/EU
Standards Applied: EN61010-1:2010, EN61010-2-033:2016,
EN61010-031:2015, EN61010-2-033:2012
RoHS2 Restriction of Hazardous Substances Directive 2011/65/EU
Signed:
Date: September 2019
Name: Toni Johnson
Position: Compliance Director.
OXFORD PRECISION
P.O. Box 14, Wigston, Leicester,
England, LE18 1AT.
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