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About voltage testers

  • What was a 2-pole voltage tester?

  • What are the 2-pole voltage testers?

  • The following test marks are available from Conrad with the 2-pole voltage tester

  • Measurement categories for 2-pole voltage testers

  • The IP protection types of the 2-pin voltage tester Conrad

  • Calibration types of the 2-pole voltage tester

  • FAQ – Frequently Asked Questions about 2-Pole Voltage Testers

 
 

What was a 2-pole voltage tester?

A voltage tester is an electrical tester used to detect the absence of voltage in an electrical system. In accordance with VDE standard 0682, Part 401, a 2-pole voltage tester is the only permissible test instrument for fulfilling the requirements of the Industrial Safety Act.

The person working on an electrical system/installation must use suitable measuring/testing equipment such as the voltage tester to determine the absence of all poles of voltage and thus check whether residual voltage is still present through electrical devices or even the wrong cable has been accidentally released.

Voltage testers for systems up to 1 kilovolt (kV) are two-pole versions with different display variants and integrated function test. An existing voltage is indicated either by an illuminated glow lamp, by a measuring device or by LEDs. Many devices can also be used to determine the voltage level of the system. 

 

What are the 2-pole voltage testers?

The voltage testers of this type offer different equipment for testing options, which go beyond the pure testing of the voltage-free: 
 

  • The display of the test result of the voltage test using LED or LCD display. Examiners with pointer instruments are no longer represented.
  • Single-pole phase test
  • Visual and acoustic continuity test
  • Two-pole rotary field direction indicator, not "3. Manual" is required
  • Load that can be switched on (load tester) by means of two push buttons, defined tripping of an FI circuit breaker
  • Automatic detection of DC/AC voltage, polarity detection
  • Protection class up to IP 64, splash-proof and dust-proof
  • Labeled with calibration and test marks, measurement categories, and protection types
  • Probe tip protection, partly in captive design, to reduce the risk of injury
  • Illuminated test probes
  • Snap-in or magnetically secured distance of the test probes of 19 millimeters for one-handed testing on standard sockets
 

The following test marks are available from Conrad's 2-pole voltage tester:

  • TUV: Technical monitoring association. Registered associations that carry out security controls as a technical testing organization, which are usually required by state laws or regulations.
  • CE: Mark which the manufacturer must apply at his own discretion and by which he expresses that he knows and meets the specific requirements of the product he sells.
  • VDE: Association of Electrical Engineering, Electronics and Information Technology e. V. is a technical and scientific association founded in 1893 in Germany.
  •  CSA: Independant standards organization from Canada (formerly Canadian Standards Association).
 

Measurement categories for 2-pole voltage testers

The measurement category specifies the permissible application areas of measuring and testing devices for use in the field of low-voltage networks. The classification of the measurement category is defined by IEC 61010-1 (safety regulations for electrical measuring, control, control and laboratory devices). The following categories are available:
 

  • Cat I: Measurements on circuits that do not have a direct connection to the mains (battery operation), including devices of protection class 3 (operation with extra low voltage), battery-operated devices, car electrical systems.
  • Cat II: Measurements on circuits that have a direct connection to the low-voltage power supply via connectors, such as household appliances and portable electrical appliances.
  • Cat III: Measurements within the building installation (stationary consumers with non-pluggable connection, distribution connection, permanently installed devices in the distributor), for example sub-distribution.
  • Cat IV: Measurements at the source of the low-voltage installation such as counters, main connection, primary overcurrent protection, low-voltage overhead lines or at the house connection box.
 

The IP protection types of the 2-pin voltage tester Conrad

IP20 Protected against access with a finger
IP40 Protected against access with a wire
IP54 Complete protection against contact and dirt against all-sided splash water
IP64 Dust-proof, complete protection against contact and dirt against all-sided splash water
IP65 Dust-proof, complete protection against contact and protection against jet water (nozzle) from any angle
 
 
 

Calibration types of the 2-pole voltage tester

  • Calibration according to ISO: For the manufactured product the quality-relevant characteristics are measured with calibrated measuring instruments according to DIN EN ISO 9001:2015.
  • Calibration according to DAkkS: The Deutsche Accreditation Body GmbH (DAkkS) is the national accreditation body – a private-sector organization that carries out sovereign tasks.
  • Factory-standard calibration: This is where the instrument is calibrated according to the manufacturer's own specifications and is not presented to a calibration point.
 

FAQ – Frequently Asked Questions about 2-Pole Voltage Testers

Who uses 2-pole voltage testers?

Electricians, electrical installers, air conditioning technicians, plant engineers and power quality consulting firms involved in the maintenance, service and design of all types of electrical installations need voltage testers. The equipment helps electricians to test, troubleshoot, analyze and repair equipment.


What operating instructions must be observed?

The voltage testers used must be tested for functionality before and after use at a definitely live source. Before, because the tester may be defective, and then because it could have suffered a defect during use.
 

What was to be observed for the batteries for 2-pole voltage testers?

A voltage tester must not be used when the battery compartment is open. Furthermore, the voltage tester must not be used if the batteries run out.
 

What are the special features to be observed when using 2-pole voltage testers?


As a special feature, the two handles of some voltage testers for common locking have 2 neodymium magnets each, which have a stronger magnetic field than "ordinary" magnets. This requires a safe distance to all equipment and objects that may be damaged by magnetism, such as:

  • TVs and computer monitors
  • Credit cards and EC cards
  • Computers, floppy disks, and other media
  • Video tapes
  • Mechanical clocks
  • Hearing aids and speakers
  • Pacemakers 
 
This text is machine translated. About voltage testers What was a 2-pole voltage tester? What are the 2-pole voltage testers? The following test marks are available from Conrad with the 2-pole voltage tester Measurement cat...