CAPDIS-PI-RR4 Retrofit

CAPDIS-PI-RR4 Retrofit

Retrofittable integrated capacitive voltage test system
as retrofit solution for defective HR interfaces

Item no.: 2501384

Retrofit Voltage detection system (VDS) for medium voltage switchgears - for retrofitting... more
Product information "CAPDIS-PI-RR4 Retrofit"

Retrofit Voltage detection system (VDS) for medium voltage switchgears - for retrofitting old HR interfaces

Main functions

  • Test for voltage absence in medium voltage systems according to VDE 0682-T415 or IEC 61243-5

  • Retrofit of old capacitive HR interfaces
  • Maintenance-free due to permanent self-monitoring

  • Intrinsically safe - no additional test equipment required

Additional functionality

  • No battery or additional auxiliary voltage required

  • Complete insulation monitoring of the capacitive divider

  • Simple adjustment of the capacitive voltage divider with C2m capacitor module

  • Simple self-test without battery or additional auxiliary voltage

  • Integrated three-phase measuring point for phase comparison, rotating field direction measurement, etc.

  • Interface for smart grid systems for voltage measurement and fault monitoring

Voltage level indication

Clear distinction from

  • Overvoltage

  • Nominal operating voltage

  • Voltage below operating voltage

  • Voltage absence

  • Fault


Technical Data


Integrated Voltage Detection System (VDS)

Applied Standard

VDE 0682 T 415 or IEC 61243-5


1 - 52 kV

Voltage level



HR interface



Maintenance test


Intrinsic safety


Auxiliary power

Not needed


Mounting on HR interface




h x b x t = 52 x 111 x 38 mm

Environmental conditions:


Operational temperature

-25 °C ...  +75 °C

Storage temperature

-40 °C  ... +80 °C

Degree of protection

IP 54

Fast and cost-effective solution for defective HR interfaces

1. Initial situation

HR interface: repeat check required every 6 years; low life expectancy due to high insulation requirements.

2. Mounting CAPDIS-PI

3. Possibly adjust capacity

If the HR interface is defective, i.e. not all 3 full flash arrows appear with a standard CAPDIS-PI at the pending nominal voltage, an adjustable CAPDIS-PI RR4 is set up. The defective phases are reconfigured via DIP switches until three full flash arrows are displayed. No external measuring device is required for parameterization.

4. Result

  • Repeat test-free voltage test system according to VDE 0682 T 415
  • Testing for voltage-free without additional equipment
  • Simplified earth fault detection at a glance
  • Integrated self-test function


Report of a plant operator after the conversion to CAPDIS-PI:

Defective capacitive HR interfaces which had already indicated a loss of insulation of the capacitive divider could be fully recovered in about ten minutes by installing the special retrofit device Capdis-PI-RR3 without having to shut down or disassemble the system.

By completely renovating the high-impedance, capacitive interfaces with the Capdis-PI voltage test system from Kries-Energietechnik, we have significantly extended the service life of the capacitive dividers without reducing the service life of the switchgear.