• Insulation monitoring and earth fault protection of high tension AC network
• Neutral voltage displacement monitoring
• Open Delta measuring principle
• Triple relay operation gives more flexibility
• Up to two individual very fast analogue output signals (<50mS), (optional)
• DIN96 Slave Indicator with status LEDs (optional)

Description
The digitally controlled KCV14x50 is a triple zone (two-level) trip relay connected in an Open Delta configuration. The unit detects changes in the neutral point voltage in a non-grounded high tension network, caused by insulation fault. Often supplied via a step-down transformer.

The standard models takes the auxiliary supply voltage terminal 1 & 2.

It can also be delivered with optional separate DC auxiliary voltage (terminal 26 & 27), but that must be specified when ordering.

User settable trip levels and delays. Colour of LEDs indicate alarm status. Alarm LEDs flash during count-down.

Start of monitoring function is delayed when power is switched on (default 2 secs delay). In this way false tripping during power up is avoided.

The optional slave meter reads the neutral point voltage, and has low-reflection glass to ease reading at a distance. Scale will depend on measuring voltage input and can be customized to nearly any scale.

OUTPUTS
Up to two individual very fast analogue output signals (optional) proportional to monitored parameters. This may be used as an input to a control system, to detect abnormal conditions. If output is used for remote meter reading, we recommend 0-1mA for the slave indicator.

RELAY OUTPUTS
Relay operation depends on the selected model. Other combinations are available on request.

Models
KCV14E50
KCV14FA50
KCV14FB50
KCV14G50
KCV14GFA50
KCV14GFB50