Short-circuit indicator with mechanical flip-up display

The OK short-circuit indicator is a robust short-circuit indicator for radial networks and open ring networks in medium-voltage applications. Short-circuit events are displayed phase-selectively via bistable flip-flop indicators and are therefore clearly visible even without a power supply. The separable sensors allow for easy retrofitting. Operation is via a lithium battery or, optionally, via an external power supply. Depending on the version, a potential-free fiber optic connection or a wired sensor connection is available.

• Phase-selective short-circuit indication via mechanical flip-up indicators
• Two versions: OK-L (fiber optic) and OK-S (cable connection)
• Separable short-circuit sensors for easy retrofitting
• Adjustable response values and minimum pulse times
• Remote signaling via contacts and optional external flashing light