Function and Application
The NJRM5-ZX series soft starter is a general-purpose soft starter with a compact structure design and online operation mode. The rated current specifications of the soft starter range from 15A to 220A, and the input power supply voltage (main circuit voltage) are AC220V, AC380V, AC460V, AC575V, and AC690V. It has strong load adaptability, stable operation, and reliability, and is widely used in motor drive equipment in fields such as metallurgy, oil, fire protection, mining, water supply, municipal, food, cement, and petrochemical industries. It is the ideal product for updating traditional star--delta starting and autotransformer voltage reduction starting.
Detail Description
Parameters:
Main circuit working voltage: 220/380/460/575/690V
Rated current: 15~220A
Rated insulation voltage: AC660~1000V
Rated impulse withstand voltage: 8kV
Advantages/Core Functions:
01 Excellent Performance
a. Smooth switching between multiple start-up modes, which can maximize the optimal start-up effect of the motor and extend the service life of the drive equipment
It can control the output electromagnetic torque of the soft starter, making the motor and equipment start more smoothly and extending the service life.
02 Safe and Reliable
It uses a three-proof automatic coating process, providing high coverage of protection, making components work more reliably.
03 Convenient and Easy to Use
It records cumulative electricity consumption, making query and management more convenient.
Detailed Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| 4.1 Main Circuit Voltage | NJRM5- □/ZX6 | AC690V (-10% ~ +10%) |
| NJRM5- □/ZX5 | AC575V (-10% ~ +10%) |
| NJRM5- □/ZX4 | AC460V (-10% ~ +10%) |
| NJRM5- □/ZX3 | AC380V (-15% ~ +15%) |
| NJRM5- □/ZX2 | AC220V (-10% ~ +15%) |
| 4.2 Main Power Frequency | Starting mode is current mode (more suitable for power generation scenarios) | 35Hz ~ 60Hz. |
| Starting mode is non-current mode | 50Hz ± 2Hz, 60Hz ± 2Hz. |
| 4.3 Applicable Motor | | General squirrel-cage three-phase induction motor |
| 4.4 Pollution Level | | Level 3 |
| 4.5 Rated Insulation Voltage | NJRM5- □/ZX4, NJRM5- □/ZX5, and NJRM5- □/ZX6 | AC1000V |
| NJRM5- □/ZX2 and NJRM5- □/ZX3 | AC660V |
| 4.6 Rated Impulse Withstand Voltage | | 8kV |
| 4.7 Cooling Method | | Natural air cooling. |
| 4.8 Starting Frequency | Can be set per hour, it is recommended not to exceed 10 times/hour | (The heavier the load, the fewer the starting frequency should be. If frequent starting is required, ensure that both the motor and the soft starter are at low temperatures.) |
| 4.9 Soft Start Time Factor | | (2 ~ 60)s. |
| 4.10 Soft Stop Time Factor | | (2 ~ 60)s. |
| 4.11 Starting Mode | | Conventional current mode, enhanced current mode, conventional voltage mode, enhanced voltage mode, linear torque mode, square torque mode, and frequency division mode, totaling 7 types. |
| 4.12 Stopping Mode | | Free stop, braking stop, and voltage ramp soft stop, totaling 3 types. |
| 4.13 Initial Voltage | | (30 ~ 70)%Ue, where Ue represents the main circuit power supply voltage. |
| 4.14 Jolt Time | | (0.0 ~ 2.0)s. |
| 4.15 Jolt Voltage | | (50 ~ 100)%Ue, where Ue represents the main circuit power supply voltage. |
| 4.16 Current Limit Multiple | | (50 ~ 500)%le, where le represents the motor's rated current. |
| 4.17 Torque Limit Level | | (50.0 ~ 300.0)%Te, where Te represents the motor's rated torque. |
| 4.18 Relay Output | | Two relay outputs, programmable status relay K1 and programmable fault/alarm relay K2. |
