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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.
VTT11 Datasheet
