Popis
Overvoltage and undervoltage monitoring railway relay with two changeover contacts. Suitable for 3-phase 400 VAC 50 Hz. Auxiliary power supply necessary, either DC or AC (0-60 Hz). When the relay is activated there is a delay on pull-in.
The delay time is adjustable with a lockable knob. The detection for overvoltage and undervoltage is also adjustable with a lockable knob.
The NSR-relay has a fail-safe circuit: an auxiliary supply failure is detected. A phase rotation error is detected as well.
The construction of the relay and choice of materials makes the NSR-relay suitable to withstand corrosive atmospheres, low and high temperatures, shock & vibrating and dry to very humid environments. No external socket necessary, the relay can be mounted directly on a 35 mm rail without extra fasteners, or on any surface via 2 screws.
Application
These relay series are designed for rolling stock applications. The NSR-relay is used in applications for overvoltage and undervoltage monitoring in a 3-phase network.
Features
- Overvoltage and undervoltage monitoring relay with delay on pull-in
- 3-phase 400 VAC input (50 Hz)
- 2 C/O contacts
- Overvoltage and undervoltage adjustable via lockable knobs
- Overvoltage adjustment: 100 – 130%
- Undervoltage adjustment: 70 – 100%
- Delay time adjustable via lockable knob
- Time delay range: 0.5 – 10 s
- Auxiliary power supply necessary
- Phase rotation error and auxiliary power
- supply failure also detected
- Screw terminals
- Mounting on 35 mm rail
- Mounting on any surface via 2 screws
Benefits
- Proven reliable
- Long term availability
- Easy to maintain
- Low life cycle cost
- No maintenance
Railway compliancy
- EN 50155 – Electronic equipment used on rolling stock for railway applications
- IEC 60571 – Electronic equipment used on railway vehicles
- IEC 60077 – Electrical equipment for rolling stock in railway applications
- IEC 60947 – Low voltage switch gear and control gear
- IEC 61373 – Rolling stock equipment – Shock and vibration test
- IEC 60947-5-4 – Electromechanical components for control applications
- EN 50121 – Electromagnetic compatibility for railway applications
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