General
The NDQ3B automatic transfer switching equipment (ATSE) consists of two main components: the device body and the intelligent automatic controller. The device body integrates two circuit breakers (model/specification refer to technical parameters) with electric operating mechanisms, along with accessories including auxiliary alarm contacts, mechanical interlocking mechanisms, and electrical interlock terminal blocks, all mounted on a metal plate. The intelligent controller utilizes a novel single-chip design with output and other functional modules.
These two components are interconnected via an aerial plug port and a dedicated shielded cable (≤2m in length), forming an intelligent control system powered by 220V, 50/60Hz. The ATSE features dual mechanical-electrical interlocking protection to ensure safe and reliable power supply, supporting automatic dual-power transfer in single-phase 220V, three-phase three-wire, and three-phase four-wire systems.
Model description
NDQ3B Outline and installation size
Specification | A | B | C | D | H |
NDQ3B-100 | 420 | 240 | 385 | 220 | 140 |
470 | 240 | 435 | 220 | 160 |
615 | 330 | 555 | 330 | 200 |
740 | 330 | 680 | 300 | 200 |
Technical Parameters
| Frame size B | 100 | 225 | 400 | 630 |
| Rated working current | 10/16/20/32/40/50/63/80/100A | 125/140/160/180/200/225A | 250/315/350/400A | 500/630A |
| Rated working voltage | AC400V |
| Controling voltage | AC220V |
| Rated Insulation voltage | 1000V |
| Transfer time | ≦3S |
| Frequency | 50/60HZ |
| ATS Level | CB Class |
| Standard | GB/T14048.11 |
| environment temperature | 5 degrees Celsius~40 degrees Celsius |
| temperature | -5°C~+40°C |
| altitude | ≤2000 m |
| Class of pollution | 3 |
| Controller | Type B (basic type) |
| Rated control supply voltage Us | 230V 50Hz |
| Installation mode for thecontroller | Integrated/separated (as installed on the surface of the cabinet) |
| Power consumption | ≤10W |
| Installation mode | Fixed type |
| Connection mode | Front connection |
Yueqing Lovadon Electric Co., Ltd.
