Function and Usage
The NQB1 series of protected starters (hereinafter referred to as the starter) is suitable for use in three-phase squirrel-cage induction motor direct starting and operation disconnection in power systems with AC 50Hz, rated operating voltage up to 690V, and rated operating current up to 18A. It has the function of frequently connecting and disconnecting circuits, as well as short circuit protection, overload, phase failure, and temperature compensation. The NQB1 series starter breaks the traditional low-voltage product component dispersion mode, integrating functions into one. The internal system coordinates and cooperates itself. Compact structure not only saves space but also fits new busbar wiring systems, reduces inventory, facilitates user selection, reduces workload and selection errors, thus being economically and practically strong. Complies with standards: GB/T 14048.4, IEC/EN 60947-4-1.
Detailed Description
Parameters:
Rated Operating Current: 0.1~18A
Rated Operating Voltage: 380, 660V
Arc Distance: 40mm
Advantages/Core Functions:
01 Has the characteristic of coordination between control and protection system
02 Reduces wiring workload, shortens installation time, reduces installation area, saves cabinet space
Detail Parameters
| Parameter Classification | Parameter Item | Parameter Value |
|---|
| 4.1 Main parameters and technical performance indicators are listed in the table: | Model | NQB1-18 |
| Rated Insulation Voltage Ui V | 690 |
| Rated Impulse Withstand Voltage Uimp kV | 6 |
| Rated Frequency Hz | 50 |
| Rated Operating Current Ie A | 0.16, 0.25, 0.4, 0.63, 1, 1.6, 2.5, 4, 6.3, 10, 14, 18 |
| Thermal Trip Current Adjustment Range A | 0.1-0.16, 0.16-0.25, 0.25-0.4, 0.4-0.63, 0.63-1, 1-1.6, 1.6-2.5, 2.5-4, 4-6.3, 6-10, 9-14, 13-18 |
| Agreed Heating Current Ith A | 0.16, 0.25, 0.4, 0.63, 1, 1.6, 2.5, 4, 6.3, 10, 14, 18 |
| Instantaneous Trip Current Setting II A | 1.5, 2.4, 5, 8, 13, 22.5, 33.5, 51, 78, 138, 170, 223 |
| Rated Operating Voltage Ue V | 380(400), 660(690) |
| Rated Limiting Short Circuit Current Iq kA | 50, 2.25 |
| Complementary SCDP Model | NT00-4, NT00-16, NT00-25 |
| Expected Current rkA | 1, 3 |
| Coordinating Type rkA | 2, 1 |
| Controlled Three-phase Squirrel-cage Motor Power kW | -, 0.37, 0.55, 1.1, 0.75, 1.5, 3, 2.2, 4, 5.5, 5.5, 9, 7.5 |
| Arc Distance mm | 40 |
| 4.2 Contact and Auxiliary Circuit Parameters are Listed in the Table: | | |
| Coil Voltage (-)/V | 110/220/380 |
| Frequency Hz | 50 |
| Coil Power VA | 70 |
| Pole Impedance (Z)Ω | ≤50 |
| Rated Insulation Voltage (UI)V | 690 |
| Agreed Heating Current (Ith)A | 10 |
| Rated Limiting Short Circuit Current (Iq)kA | 1 |
| Rated Limiting Short Circuit Current Coordination SCDP Model | NT00-10A |
| Rated Operating Current (Ie)A and Operating Voltage (Ue)V | AC-15: 0.95A |
| Rated Impulse Withstand Voltage (Uimp)kV | 6 |
