Function and Application
The NJR5-D series soft starter is a three-phase AC asynchronous motor (hereinafter referred to as motor) soft starter designed based on power electronics technology, microprocessor technology, and modern control theory technology. It realizes the soft start and soft stop functions of the motor by controlling the three-phase anti-parallel thyristor connected between the power supply and the controlled motor.
Detail Description
Parameters:
Rated current range: 15~1600A
Rated power range: 7.5~800KW
Main power voltage: AC220V/380V/460V/575V/690V
Advantages/Core Functions:
01 Excellent Performance
7 modes available, precisely lock in the optimal starting effect
Smother start and stop, energy-saving while extending equipment service life
02 Rich Functionality
Secondary current limiting function, reliable starting even for heavy load
Two analog current outputs, better compatibility with industrial automation equipment
03 Safe and Reliable
Standard protection cover for main circuit of products up to 180A, safer for live maintenance
Three-proof coating + enhanced EMC design, improve product stability
Detailed Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| Major Technical Parameters | Serial Number | 1 |
| Technical Parameter | Main Power Voltage |
| Specification and Performance Index | NJR5- □/D2: AC220V (-10%→+15%) (i.e., AC198V-AC264V)
NJR5- □/D3: AC380V (-15%→+15%) (i.e., AC323V-AC437V)
NJR5- □/D4: AC460V (-10%→+10%) (i.e., AC414V-AC504V)
NJR5- □/D5: AC575V (-10%→+10%) (i.e., AC517V-AC633V)
NJR5- □/D6: AC690V (-10%→+10%) (i.e., AC621V-AC759V) |
| Serial Number | 2 |
| Technical Parameter | Main Power Frequency |
| Specification and Performance Index | 1. Starting mode is current mode (more suitable for power generation occasions): 35Hz→60Hz.
2. When starting mode is not current mode: 50Hz±2Hz, 60Hz±2Hz. |
| Serial Number | 3 |
| Technical Parameter | Control Power Supply Voltage |
| Specification and Performance Index | NJR5- □/D2 and NJR5- □/D3: Control power supply voltage is equal to main power supply voltage.
NJR5- □/D4, NJR5- □/D5 and NJR5- □/D6: AC220V (-10%→+15%). |
| Serial Number | 4 |
| Technical Parameter | Control Power Supply Frequency |
| Specification and Performance Index | 50Hz±2Hz, 60Hz±2Hz |
| Serial Number | 5 |
| Technical Parameter | Applicable Motor |
| Specification and Performance Index | Standard squirrel-cage three-phase asynchronous motor |
| Serial Number | 6 |
| Technical Parameter | Pollution Level |
| Specification and Performance Index | Level 3 |
| Serial Number | 7 |
| Technical Parameter | Rated Insulation Voltage |
| Specification and Performance Index | NJR5- □/D2, NJR5- □/D3: AC660V
NJR5- □/D4, NJR5- □/D5, NJR5- □/D6: AC1000V |
| Serial Number | 8 |
| Technical Parameter | Rated Impulse Withstand Voltage |
| Specification and Performance Index | 8kV |
| Serial Number | 9 |
| Technical Parameter | Cooling Method |
| Specification and Performance Index | Natural Cooling |
| Serial Number | 10 |
| Technical Parameter | Starting Frequency |
| Specification and Performance Index | Starting frequency per hour can be set, it is recommended not to exceed 10 times per hour (the heavier the load, the fewer the starting frequency; if frequent starting is required, ensure that both the motor and the soft starter are at low temperature)
Note: After the starting current limit protection or running overload protection is reported, the next start can be performed after 30 minutes. |
| Serial Number | 11 |
| Technical Parameter | Vibration Resistance |
| Specification and Performance Index | Vibration less than 0.5g |
| Serial Number | 12 |
| Technical Parameter | EMC Equipment Level |
| Specification and Performance Index | Class A (Industrial Grade) |
| Serial Number | 13 |
| Technical Parameter | Starting Voltage |
| Specification and Performance Index | 30%Ue ~ 70%Ue |
| Serial Number | 14 |
| Technical Parameter | Starting Limit Current |
| Specification and Performance Index | 50%le ~ 500%le |
| Serial Number | 15 |
| Technical Parameter | Overload Protection Level |
| Specification and Performance Index | Level 2, 10A, 10 Level, 20 Level, and 30 Level |
| Serial Number | 16 |
| Technical Parameter | Relay Output |
| Specification and Performance Index | Three relay outputs, bypass relay K1, programmable status relay K2, and programmable fault relay K3. |
| Serial Number | 17 |
| Technical Parameter | Digital Input |
| Specification and Performance Index | Two programmable digital inputs: programmable input terminal IN1 and programmable input terminal IN2.
Two digital inputs: start signal RUN, stop signal STOP, and momentary stop signal EMS. |
| Item number | 18 |
| Technical parameters | Analog output |
| Specification performance index | One analog output, two output types available: 4mA～20mA and 0mA～20mA. |
