Model N-708
3 - 30 HP
Autoswitch (Digital)
Digital Dryrun Auto Switch
Our fully digital dryrun autoswitch with onboard ammeter & voltage LED display, fault indicators for every protection, and all technical settings changeable directly on site.
Model No.N-708
Capacity3 - 30 HP
Manufactured ByNational Electronics
Features
- Microcontroller based technology.
- Motor starts automatically after on-delay time (setable one delay time).
- Ammeter & voltage LED display, plus indicators.
- LED display for all faults & protection indication.
- After dry run / O/L trip, restart time setable from 1 min to 180 mins.
- O/L & D/R% setable.
- SPP / O/L protection enable / disable facility.
- SPP protection up to motor terminals (current sensing).
- Protection from voltage unbalance, single phasing & dry run (push button setting).
- Useful for 3 Ph. 3 HP to 50 HP openwell, monoblock & submersible pumps.
- Overload trip current & dry run trip current shown in display.
- Separate indicator for timer, OK, SPP/O/L & D/R.
- All technical settings can be changed onsite.
Technical Specifications
| Operating Voltage | 220 to 460 VAC, 50Hz |
| Trip Time Delay | 4 sec |
| Dry Run Setting | 70% of full load current |
| Overload Setting | 130% of full load current |
| SPP Sensing | Current & Voltage |
| Capacity | 3 - 30 HP |
| Model | N-708 |
