Under-frequency monitoring relays

4 companies | 7 products
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under-voltage monitoring relay
under-voltage monitoring relay
LINETRAXX® VME420

Trigger voltage: 0 V - 300 V

... Overview
LINETRAXX® VME420 series are multifunction voltage/frequency monitoring relays for undervoltage, overvoltage and frequency supervision in AC and DC systems with a separate external supply. Voltages are measured as r.m.s. values and ...

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voltage monitoring relay
voltage monitoring relay
LINETRAXX® VME421H

Trigger voltage: 10 V - 300 V

... Overview
The LINETRAXX® VME421H is a compact voltage and frequency monitoring relay for AC and DC systems. It monitors undervoltage, overvoltage, frequency and voltage window conditions and measures voltages as r.m.s. values. The device is powered ...

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voltage monitoring relay
voltage monitoring relay
LINETRAXX® VMD420

Trigger voltage: 0 V - 500 V

... Overview
The multi-functional LINETRAXX® VMD420 voltage monitoring relay monitors frequency, undervoltage, overvoltage and the voltage between two threshold values (window function) in 3(N)AC systems. Voltages are measured as r.m.s. values and ...

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low-level monitoring relay
low-level monitoring relay
LINETRAXX® VMD421H

Trigger voltage: 70 V - 500 V

... Product overview
The LINETRAXX® VMD421H is a multi‑function voltage monitoring relay for 3(N)AC systems. It monitors undervoltage, overvoltage, frequency and the voltage window between two threshold values. Voltages are measured as r.m.s. values ...

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under-frequency monitoring relay
under-frequency monitoring relay
MS2H34-S

The 2H34-S Series relay is a frequency monitoring relay with four stages of adjustable frequency pick up & drop out points. Each frequency set point can be set for under or over frequency operation & has an independent time delay driving an output ...

under-frequency monitoring relay
under-frequency monitoring relay
5 - 135 Hz

Trigger voltage: 110 V - 440 V

The Frequency Monitoring Relay is manufactured with monitor frequencies that have three signals which are Sine, Square, and Triangular. This unit can work with different auxiliary voltage distribution conditions & frequency extent. It has a high signal ...

speed monitoring relay
speed monitoring relay
USR1V4

... Universal speed relay for all speed monitoring applications Intuitive user configuration using control buttons and LCD display Relay and solid state outputs with individual speed range monitoring Supports complete 4B sensor range Live, scalable, linear, ...

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