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VTT12 - Definite Time Delay Relay

This page provides the datasheet information for the VTT12, a member of the VTT11 Definite Time Delay Relay family.

Datasheet Summary

Description

A stabilised voltage is applied to a resistance/capacitance circuit.

The potential developed across the capacitor is applied to a transistor switching circuit which, in turn, operates an attracted armature relay when the potential reaches the trigger level.

Features

  • Consistent accuracy.
  • Reliability.
  • Low burden.
  • Reduced maintenance.
  • Immunity to transients and surges; withstands 5 kv impulse voltage test.
  • Relays with heavy-duty magnetic blow-out contacts also available.

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Datasheet preview – VTT12

Datasheet Details

Part number VTT12
Manufacturer ALSTOM
File Size 683.11 KB
Description Definite Time Delay Relay
Datasheet download datasheet VTT12 Datasheet
Additional preview pages of the VTT12 datasheet.

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Full PDF Text Transcription

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PROTECTION Type VTT 11, 12 Definite Time Delay Relay VTT is a static time delay relay which is particularly suitable for applications requiring large number of operations and consistent accuracy with little or no maintenance over long periods. It is also commonly used in industrial processes. Features • Consistent accuracy • Reliability • Low burden • Reduced maintenance • Immunity to transients and surges; withstands 5 kv impulse voltage test • Relays with heavy-duty magnetic blow-out contacts also available Description A stabilised voltage is applied to a resistance/capacitance circuit. The potential developed across the capacitor is applied to a transistor switching circuit which, in turn, operates an attracted armature relay when the potential reaches the trigger level.
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