Retrofittable integrated capacitive voltage test system
as retrofit solution for defective HR interfaces
Retrofittable voltage test system for medium voltage switchgear (VDS)
- as retrofit solution for defective HR interfaces -
- Voltage-free testing in medium-voltage systems according to VDE 0682-T415 or IEC 61243-5
- Integrated three-phase continuous display
- Maintenance-free due to permanent self-monitoring
- Intrinsically safe - no additional test equipment required
- No battery or additional auxiliary voltage required
- Complete insulation monitoring of the capacitive divider
- 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
- Setting the capacity value on site via DIP switch
Clear distinction from
- Operating voltage
- Voltage below operating voltage
HR interface in switchgear
Measuring point at device
h x w x t = 52 x 111 x 38 mm
Degree of protection
-25 ° C ... + 75 ° C
By means of a test button even in a voltage-free state (without battery or auxiliary energy)
Phase comparison using LR or LRM interfaces, e.g. type CAP phase
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.
- 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.