Voltage Detectors

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Voltage Detectors MV HV

Voltage Detectors MV HV

 

Voltage detectors are used to check for the absence or presence of voltage on medium and high switchgear, transformers or overhead lines – electrical safety is imperative in all areas of power transmission and distribution at all voltage levels including MV, HV and EHV up to 400kV.

If the power system is Live then a visual and audible signal will be heard and seen from the detector.

No voltage is present if after contacting the conductor the LEDs remain Green.

Pfisterer voltage detectors are manufactured and designed under the motto: Two Is Better Than One.

An acoustic and visual signal issues a clear, double signal if any voltage is applied. Each time the system is switched the voltage detectors or testers perform a self-test and then report back when they are ready for operation – a key feature for additional electrical safety when working at medium, high or extra high voltages.

When working on MV-HV electrical switchgear, underground cable or overhead line power systems it is imperative to check that voltage is absent and this requires voltage detectors meet the highest quality and reliability requirements.

Pfisterer KP-Test 5 Series voltage detectors provide an exceptional combination of user comfort and safety in one electrical safety device. The optimum LED layout, integrated audible signals and innovative self-test features form the basic elements on all voltage detection equipment types.

Medium & High Voltage Detectors

MV HV

Pfisterer KP-Test 5 Series voltage detectors can be supplied as capacitive single-pole voltage detectors for a.c. voltages from 1V to 420kV, or resistive double pole voltage detectors from 500V to 4,000V in various specifications:

  • KP-Test 5: For medium voltage (MV) switchgear and electrical equipment applications with contact electrode extension – nominal voltages from 1 to 33kV/36kV, Type S
  • KP-Test 5 dual: For medium voltage (MV) applications with contact electrode extension and nominal voltage range selector – nominal voltages from 3 to 33kV/36kV, Type S
  • KP-Test 5L: Mainly for use on medium voltage (MV) overhead line systems – nominal voltages from 3 to 33kV/36kV, Type L
  • KP-Test 5L dual: Mainly for use on medium voltage (MV) overhead lines with nominal voltage range selector – nominal voltages from 3 to 33kV/36kV, Type L
  • KP-Test 5H: For high voltage (HV) applications with contact electrode extension – nominal voltages from 30 to 420kV (including 66kV 132kV 275kV), Type S
  • KP-Test 5HL: For use on high voltage (HV) overhead lines – nominal voltages from 30 to 420kV (including 66kV 132kV 275kV), Type L
  • KP-Test 5R for Catenaries: For use on the catenary systems of d.c. voltage railways – nominal voltages from 500V to 4,000V d.c.
  • KP-Test 5R for Catenaries Separable: For use on the catenary systems of d.c. voltage railways – nominal voltages from 500V to 4,000V d.c.
  • KP-Test 5R DC: For use on the catenary systems of d.c. voltage railways – nominal voltages from 500V to 4,000V d.c.
  • KP-Test 5R DC dual: For use on the catenary systems of d.c. voltage railways, with nominal voltage range selector – nominal voltages from 500V to 4,000V d.c.
  • KP-Test 5 DC: For use on the catenary systems of d.c. voltage systems and railways with a third rail – nominal voltages from 500V to 4,000V d.c.

The possible operating conditions should be taken into consideration when selecting a suitable voltage detector. Voltage detectors with a contact electrode extension have universal application, as they allow reliable indications even in difficult electrical field conditions.

Use Of Voltage Detectors

Prior to using voltage detectors the following checks should be carried out – check for visual damage (or 3rd party labels) and note the date of the next routine inspection. Always check the maximum permissible voltage range use and depending on the rated voltage of the MV-HV power system – note with the KP-Test 5 Dual Voltage Detector it is possible to select between 2 test ranges which are indicated by the number of green LEDs illuminated.

Voltage detectors should only ever be held by the handle and inserted into the electrical equipment up to the limiting mark (red ring) – contact should only ever be made with the bare conductors.

For cleaning and maintaining medium and high voltage detectors a damp, fluff-free cloth should be used.

5 MV HV Electrical Safety Considerations

  1. Disconnect Electrical System
  2. Secure Against Reconnection
  3. Establish Absence Of Voltage
  4. Short Circuiting & Portable Earthing
  5. Insulate, Isolate & Protect Against Adjacent Live Parts
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Electrical Safety Equipment Medium High Voltage MV HV

Voltage Detectors | Phase Comparators | Operating Poles | Portable Earthing & Short Circuiting Kits