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Phase monitor RN 9877

RN9877.png

Features

• According to IEC/EN 60 255-1
• For monitoring of AC 3- and single-phase with 50 /60 Hz
• Detection of
- Overvoltage
- Undervoltage
- Voltage range excess
- Phase failure
- Phase asymmetry
- missing neutral e.g. broken neutral wire
- and phase sequence in 3-phase systems
• With or without neutral
• No separate auxiliary necessary
• Output: 1 changeover contact
• De-energized on trip
• Adjustable hysteresis for reset
• Adjustable switching delay
• Fast fault detection
• Width:
- RL 9877: 35 mm
- RN 9877: 52.5 mm

• According to IEC/EN 60 255-1
• For monitoring of AC 3- and single-phase with 50 /60 Hz
• Detection of
- Overvoltage
- Undervoltage
- Voltage range excess
- Phase failure
- Phase asymmetry
- missing neutral e.g. broken neutral wire
- and phase...

more...

Advantages / Customer benefit

• Preventive maintenance
• For better productivity
• Always right directions of motors and pumps
• Safe monitoring of motors and plants with phase failure detection
• High repeat accuracy
• Wide measuring voltage range
• Selectable monitoring function
• Easy setting

• Preventive maintenance
• For better productivity
• Always right directions of motors and pumps
• Safe monitoring of motors and plants with phase failure detection
• High repeat accuracy
• Wide measuring voltage range
•...

more...
Function Phase monitor
1- / 3-phase 3
Standard measuring range 3 AC 175 … 525 V / 100 ... 300 V
Measuring range max. 525 V
Output contacts 1 w
Approvals UL
Enclosure design Installationsverteiler
Width 52,5 mm
Type RN 9877

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Datasheet / Operating Instructions, File: pdf, File size 325 KB

The measuring relays RN 9877 and RL 9877 of the VARIMETER series monitor overvoltage, undervoltage, voltage range, phase asymmetry and phase sequence in 3-phase or single-phase systems. The measurement is very simple and without extensive wiring as there is no auxiliary power supply necessary. The monitoring functions are easily selectable using a single turn switch without complex menu structure. The early detection of up-coming break downs and preventive maintenance avoid expensive damages. As user you profit from the reliability and availability of your plant.

 

 

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