- UVT is a device which makes ACB tripped automatically to prevent the accident on load side due to under volrage or power breakdown. There are two types, Instantaneous type and time delay type.
- It can be installed on the rail or to the cradle.
- Instantaneous type: only available with UVT coil.
- Time delay type: available by connecting UVT coil and UVT time delay controller.
- Common use for the all types.
1. The rated voltage and characteristics of UVT time delay controller
| Rated voltage[Vn] | Operating voltage range[V] | Power consumotion[VA or W] | Trip time[ms] | |||
|---|---|---|---|---|---|---|
| DC[V] | AC[V] | Pick up | Drop out | Inrush | Steady-state | |
| 48–60 | 48 | 0.65–0.85Vn | 0.4–0.65Vn | 200 | 5 | 0.5, 1, 1.5, 3 |
| 100–130 | 100–130 | |||||
| 200–250 | 200–250 | |||||
| — | 380–480 | |||||
- Note) 0perating voltage range is the min. rated standard for each rated voltage (Vh).
2. Wiring
