IRDH265-422 BENDER

IRDH265-422 BENDER Programmable controller

Brand：BENDER Model number：IRDH265-422

Country of origin: Germany Product weight：0.55kg

HS code：9032899099

Product Details：

Product Dimensions：

The voltage monitor VME421H monitors AC/DC systems in the frequency range of DC/15…460 Hz for undervoltage, overvoltage, underfrequency or overfrequency.

Device variant -1 is suitable for the nominal voltage range Un = 9.6…150 V, device variant -2 for Un = 70…300 V. The supply voltage is taken from the nominal voltage being monitored Un.

In order to meet the requirements of the applicable standards, customised parameter settings must be made on the equipment in order to adapt it to local equipment and operating conditions. Please heed the limits of the range of application indicated in the

technical data.

• Voltage and frequency monitoring of single-phase machines and electrical installations

• Earth fault monitoring in medium-voltage systems via voltage transformers

• Monitoring of battery systems

• Switching machinery and equipment on and off at a certain voltage level Once the supply voltage is applied, the start-up delay “t” begins. Measured voltage and frequency values changing during this time do not influence the switching state of the alarm relays.

The devices feature two separately adjustable measuring channels (overvoltage/undervoltage). When the measuring quantity exceeds the response value (“Alarm 1”) or falls below the response value (“Alarm 2”), the time of the response delays “ton1/2” begins.

Once the response delay has elapsed, the alarm relays switch and the alarm LEDs light up. When the measuring value exceeds or falls below the release value (response value plus hysteresis) after the alarm relays have switched, the selected release delay “toff” begins. When “toff” has elapsed, the alarm relays switch back to their initial position. When the fault memory is activated, the alarm relays remain in alarm position until the reset button R is pressed. Also in the event of complete power failure of the system being monitored, the delay times are effective during the energy backup discharging time.

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