Model N-705
3 - 30 HP
Semi Dryrun Autoswitch
Semi Dryrun Auto Switch
A wide-capacity dry-run protection switch for semi-automatic starters, covering everything from small openwell pumps up to large 30 HP submersible installations.
Model No.N-705
Capacity3 - 30 HP
Manufactured ByNational Electronics
Features
- Microcontroller based technology.
- Motor starts automatically after time delay of 20 Sec. to 5 min.
- Restart timer of 2 hours after a dryrun trip.
- Protection from voltage unbalance, single phasing & dry run (automatic push button setting).
- Operates on low voltage (from 200V).
- Useful for 3 Ph. 3 to 30 H.P. Openwell, Submersible, Monoblock, pumpsets.
- Separates indications for Timer, OK, SPP & Dry Run.
- Auto Manual facility.
Technical Specifications
| Operating Voltage | 220 to 460 VAC, 50Hz |
| Dry Run Trip Timing | 7 Sec |
| Dry Run Setting | 70% of full load current |
| Trip Time Delay | 4 Sec |
| Voltage Unbalance Setting | 35V Phase to Phase |
| Capacity | 3 - 30 HP |
| Model | N-705 |
