Datasheet Details
| Part number | VTT12 |
|---|---|
| Manufacturer | ALSTOM |
| File Size | 683.11 KB |
| Description | Definite Time Delay Relay |
| Download | VTT12 Download (PDF) |
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Overview: 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.
Download the VTT12 datasheet PDF. This datasheet also includes the VTT11 variant, as both parts are published together in a single manufacturer document.
| Part number | VTT12 |
|---|---|
| Manufacturer | ALSTOM |
| File Size | 683.11 KB |
| Description | Definite Time Delay Relay |
| Download | VTT12 Download (PDF) |
|
|
|
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.
The time delay is varied by altering the resistance value in the resistance/ capacitance circuit by a potentiometer calibrated in seconds.
| Brand Logo | Part Number | Description | Manufacturer |
|---|---|---|---|
 |
VTT1212 | .040 NPN Phototransistors | PerkinElmer Optoelectronics |
|
VTT1214 | .040 NPN Phototransistors | PerkinElmer Optoelectronics |
|
VTT1222W | .025 NPN Phototransistors | PerkinElmer Optoelectronics |
|
VTT1223W | .025 NPN Phototransistors | PerkinElmer Optoelectronics |
|
VTT1225 | .025 NPN Phototransistors | PerkinElmer Optoelectronics |
| Part Number | Description |
|---|---|
| VTT11 | Definite Time Delay Relay |