MOK-V2 series devices are measuring relays with adjustable hysteresis. The device measures a voltage in a monitored circuit:
- The contacts switch to 'make' status when this parameter exceeds the pick-up threshold selected by the user and expressed as a percentage of the nominal voltage
- The relay reverts to 'break' status when the measured value drops below the drop-out threshold (also selected by the user)
These models are suitable for the supervision and protection of electrical equipment used in the most demanding sectors, such as:
- Electricity generating stations
- Electrical transformer stations
- Industries using continuous production processes
- Railways, including both trackside equipment and rolling stock
The relay features two adjustable voltage thresholds:
- Pick-up Voltage
- Drop-out Voltage
The PICK-UP VOLTAGE can be set at between 60% and 120% of nominal voltage.
The DROP-OUT VOLTAGE can be set at between 70% and 98% of the pick-up voltage.
Particularly suitable for monitoring battery voltages in the rail-tram-trolley vehicles sector.
Compliance with standards
- EN 61810-1, EN 61810-2, EN 61810-7 Electromechanical elementary relays
- EN 60695-2-10 Fire hazard testing
- EN 50082-2 Electromagnetic compatibility
- EN 60529 Degrees of protection provided by enclosures
- EN 60077 Electric equipment for rolling stock - General service conditions and general rules
- EN 50155 Electronic equipment used on rolling stock
- EN 61373 Shock and vibration tests, Category 1, Class B
- EN 45545-2 Requirements for fire behaviour of materials and components – Product No. EL10 – Requirement R26, V0
- ASTM E162, E662 Standard Test Method for Surface Flammability of Materials, Standard Test Method for Specific Optical Density of Smoke