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At a voltage of about 38 V/AC or 100 V/DC a signal sound is produced. The rotating field indica-
tor "L" and "R" may flash during metering. This is a technical issue and is without significance or
impact on the measuring process.
The two probe tips L1 und L2 can be connected to one another, laterally via the fastening clamp
on the handle grip barrier of probe tip L1 (5).
The distance between the two probes is 19 mm, which complies with the standardized contact
gap for EU and safety socket outlets.
In addition, establishing contact inside the outlets is made even easier when the included 4 mm
adapter screws are used. That way, the voltage tester can be guided by using one hand only.
Make sure that your hand remains within the grip area (16) of probe tip L2 and that
you don't cover the display.
b) Rotating field indicator
VC-55 shows the rotating field direction of properly grounded three-phase systems (with batteries only). The
voltage tester detects the order of increasing phases to ground potential
Hold the voltage tester by the handles (1) and (16) provided. Never touch the device beyond the handle
ends.
Connect the two probes to the measuring points that you want to measure.
The probe L1 (4) corresponds to the outer cable (phase) L1.
The probe L1 (6) corresponds to the outer cable (phase) L2.
The available voltage range and the phase sequence is represented on the display.
The illuminated indicators (12) show the applicable rotating field direction (L = left turning / R = right turning).
Example 1:
Probe tip L1 to outer cable L1,
Probe tip L2 to outer cable L2,
The correct field rotation "R" is displayed
Example 3:
Probe tip L1 to outer cable L2,
Probe tip L2 to outer cable L1,
Opposite phase sequence "L" is displayed
c) Continuity test
When batteries are inserted, the VC-55 can be used as a continuity tester.
Hold the voltage tester by the handles (1) and (16) provided. Never touch the device beyond the handle
ends.
Check function before your start metering.
Connect both probe tips to one another. A signal sounds and the display is illuminated (11).
If this is not the case, replace the batteries as described under "Inserting/Replacing the Batteries".
The continuity tester indicates a resistance of about 0 - 500 kΩ (+50%) as continuity.
d) Single-pole phase test
When batteries are inserted, the VC-55 can be used as a single-pole phase tester.
Hold the voltage tester by the handles (1) and (16) provided. Never touch the device beyond the handle
ends.
This single-pole phase test serves as a quick test only, and prior to any work conducted on
this line the absence of voltage must be rechecked using the double-pole measuring method.
Observe the regulations regarding work with electrical systems.
Contact probe tip L2 with the measuring point to be tested. Probe L1 has no contact.
If an alternating voltage >100 V is present, the indicator (10) lights up and a signal sounds.
The single-pole phase display may be adversely affected by unfavourable ambient conditions
(electrostatic fields, good insulation etc.). However, perform an additional double-pole voltage
test to determine that voltage is absent.
Cleaning and maintenance
Besides occasional cleaning and battery replacement, the voltage tester is maintenance-free.
The voltage tester must be disconnected from all devices under test before cleaning.
After cleaning, allow the product to dry completely before using it again.
Never try to open the housing, apart from the battery compartment.
Check the technical safety of the voltage tester regularly. It is understood that safe operation is no longer
possible:
- if the device or he connecting cable is visibly damaged
- after prolonged storage under unfavourable conditions
- after extraordinary transport stress
The outside of the device should be cleaned with a soft, damp cloth or brush only. Do not use abrasive or
chemical cleaning agents which could damage the housing or impair operation.
Disposal
a) General
Electronic products are recyclables and do not belong in the household waste. When the device
has reached the end of its service life, please dispose of it, according to the current statutory
requirements, at your local collecting site. It is prohibited to dispose of the device with domestic
waste.
b) Batteries
You as the ultimate consumer are legally obliged (Regulation on Spent Batteries) to return all dead batteries;
disposal in the household waste is prohibited!
Batteries containing hazardous substance are marked by the symbols alongside which indicates
the prohibition of disposal with domestic waste. The symbols of the relevant heavy metals are:
Cd = Cadmium, Hg = Mercury, Pb = Lead. You can hand in your used batteries at the collection
points of your community at no cost or everywhere where batteries/accumulators are sold.
Thus you fulfil your statutory obligations and contribute to the protection of the environment!
Example 2:
probe tip L1 to outer cable L2,
probe tip L2 to outer cable L3,
The correct field rotation "R" is displayed
Technical data
a) General information
Voltage indicator LED ........................... 12, 24, 36, 50, 120, 230, 400, 690 V AC/DC
Voltage indicator LCD ........................... 12 - 690 V AC/DC
Resolution LCD .................................... 0.1 V
Polarity indicator ................................... +, -, +/- (AC)
Indicator tolerance LCD ........................ ± (3% + 5 counts)
Indicator tolerance LED ........................ according to EN61243-3
Voltage display ..................................... automatic
Signal .................................................... > 38 V, continuity
Display delay ........................................ <1 s LED
Frequency range f ................................ DC, 16 ... 400 Hz
Power input ........................................... approx. 2.4 W at 690 V
Max test current I .................................. <3.5 mA
Warning indicator LED .......................... >38 V/AC, >120 V/DC
Measuring time / cycle .......................... max. 30 seconds
Rest time .............................................. 240 seconds
LED/LCD indicator from ........................ > 10 V AC/DC
Power supply ........................................ 2x 1.5 V (AAA/LR03)
Battery power supply ............................ approx. 80 mA
Temperature range operation ............... -15 to +55°C
Storage temperature ............................. -20 to +70 °C
Rel. Humidity ........................................ max. 85%, non-condensing
Measurement category ......................... CATIII 1000 V, CAT IV 600 V
Pollution degree .................................... 2
Operating altitude ................................. max. 2000 m above N.N.
Protection type ...................................... IP64
b) Rotating field direction indicator
only on grounded three-phase systems!
Voltage range ....................................... 120 - 400 V/AC
Frequency range .................................. 50 / 60 Hz
c) Continuity test
Test range ............................................. 0 - 500 kΩ (+50 %)
Overvoltage protection ......................... 690 V DC/AC
d) Single-pole phase test
Voltage range ....................................... 100 - 690 V/AC
Frequency range .................................. 50 / 60 Hz
This is a publication by Conrad Electronic SE, Klaus-Conrad-Str. 1, D-92240 Hirschau (www.conrad.com).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming, or the capture in
electronic data processing systems require the prior written approval by the editor. Reprinting, also in part, is prohibited.
This publication represent the technical status at the time of printing.
© Copyright 2017 by Conrad Electronic SE.
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