SHR3E Mini Intelligent Soft Starter from China Suppliers - Reliable Factory Solutions for Motor Control and Protection
Product Profile
The SHR3E soft starter is a brand-new integrated intelligent motor control and protection product launched by Shuoshi Electric. Combining rich experience in industry applications and a deep understanding of customers' special application requirements, and based on years of product research and development, it has added new functions, improving the reliability and convenience of customer applications.
The soft starter is a digital motor soft starting product. It can control the motor to accelerate smoothly during the starting process and decelerate smoothly during the stopping process, and it provides protection functions for both the motor and the product itself. It is the best upgraded alternative to traditional star-delta and reactor starters. It is suitable for asynchronous squirrel-cage motors with a power range of 0.75-90kW.
The soft starter is equipped with an RS485 communication interface and supports the Modbus protocol, enabling comprehensive remote control and monitoring by a microcomputer. It can be widely used in industries such as textiles, metallurgy, agriculture, petroleum, chemical, water treatment, shipping, transportation, pharmaceuticals, food processing, mining, and mechanical equipment.
Function
The SHR3E series soft starters can directly set the parameters of starting time, stopping time and initial voltage through three potentiometers. All models in the SHR3E series soft starters have built-in bypass relays. Users do not need to additionally install external bypass contactors. The soft start adopts the voltage ramp starting method.
During the soft stop process, the output torque can be maintained (final torque control), thus effectively preventing the water hammer effect. It can adopt two connection methods: delta external connection and star external connection. Real-time data (phase A current, phase B current, phase C current, average current, etc.) can be read through communication. *Note
Fault history records (10 fault history records, etc.) can be read through communication. *Note
Statistical data (cumulative number of starts, cumulative running time, cumulative number of trips, etc.) can be read through communication. *Note
Protection functions of the SHR3E series soft starters:
1) Over-current protection
2) Over-current delay protection
3) Over-load protection (Over-load class: CLASS10A, CLASS10, CLASS20, CLASS30)
4) Three-phase current imbalance protection
5) Phase loss/under-voltage protection
6) Phase sequence protection
7) SCR (Silicon-Controlled Rectifier) over-temperature protection
There is one start/stop control input point.
RS-485 communication bus interface. *Note
It is optional to have a built-in start/stop control switch. *Note
There are two relay outputs (running relay and fault relay).
*Note 1: It is an optional accessory. This function can only be used when the RS-485 communication bus interface (Modbus RTU protocol) is selected.
*Note 2: It is an optional accessory. This function can only be used when the built-in start/stop control switch is selected.
Features
- Three-phase control;
- Operating voltage: 200/400/500VAC;
- Wide range of control voltage: 100~240VAC 50/60Hz or 24VDC;
- SLR rated operating current: 1.5~150A;
- The control board is added with a protective coating;
- Direct parameter setting via potentiometers makes the setting and operation simpler and more convenient. All series have built-in bypass, which reduces energy consumption and is easy to install;
- Modbus RTU is optional for monitoring;
- Supports all mainstream communication protocols;
- Built-in motor protection function;
- Integrated structure design with a protection level of IP21: It can effectively resist dust, moisture and corrosive gases, significantly extending the service life.
Feature Description
| Feature | Specification |
|---|---|
| Input Voltage | 220/400/500VAC 50/60Hz |
| Control Source Voltage | 100~240VAC or 24VDC 50/60Hz |
| Current class | 1.5……150A |
| Initial Voltage | 30%~70% |
| Start Slope | 1~30Sec |
| Stop Slope | 0~30Sec |
| Overload | 3 x le for 7 Sec (Valid for 50 % on time and 50 % off time) |
| Times of start per hour | <5, 5-10 (light load or no-load) |
| Overload grade | 10A |
| Operation Environmental temperature | 0℃ to +50℃ (32℉ to 122℉) |
| Store temperature | -40℃ to +70℃ (-40℉ to 158℉) |
| Maximum altitude | 1000m (3280ft) |
| Ingress Protection grade | IP21 |
Note:
1. Rated voltage of the main power supply: 22: 220V; 40: 400V; 50: 500V;
2. Rated current: 1.5~150A;
3. Control power supply voltage: A: 100~240VAC; B: 24VDC;
4. Control mode of the soft starter: 3P3: Three-phase three-control; 1P1: Single-phase single-control.
Internal Control Form & Connection
Below are the details regarding the internal control form and external connection options for the SHR3E soft starter.
Internal control form
Application internal & External connection
Product Selection
Three-phase Three-control (3P3 Model Selection):
| Model | Motor power rating (Pe/kW) | SLR Rated current (le/A) | Structure (F) | Weight (kg) | ||
|---|---|---|---|---|---|---|
| 220V | 400V | 500V | ||||
| SHR3EXX1T5-X-3P3 | 0.37 | 0.75 | 1.1 | 1.5 | A | 1 |
| SHR3EXX2T2-X-3P3 | 0.55 | 1.1 | 1.5 | 2.2 | A | 1 |
| SHR3EXX03-X-3P3 | 0.75 | 1.5 | 2.2 | 3 | A | 1 |
| SHR3EXX4T5-X-3P3 | 1.1 | 2.2 | 3.7 | 4.5 | A | 1 |
| SHR3EXX7T5-X-3P3 | 1.5 | 3.7 | 5.5 | 7.5 | A | 1 |
| SHR3EXX11-X-3P3 | 2.2 | 5.5 | 7.5 | 11 | A | 1 |
| SHR3EXX 15-X-3P3 | 3.7 | 7.5 | 11 | 15 | B | 1.4 |
| SHR3EXX22-X-3P3 | 5.5 | 11 | 15 | 22 | B | 1.4 |
| SHR3EXX30-X-3P3 | 7.5 | 15 | 18.5 | 30 | C | 2.4 |
| SHR3EXX37-X-3P3 | 11 | 18.5 | 22 | 37 | C | 2.4 |
| SHR3EXX45-X-3P3 | 15 | 22 | 30 | 45 | C | 2.4 |
| SHR3EXX60-X-3P3 | 18.5 | 30 | 37 | 60 | C | 2.4 |
| SHR3EXX75-X-3P3 | 22 | 37 | 45 | 75 | C | 2.4 |
| SHR3EXX90-X-3P3 | 25 | 45 | 55 | 90 | D | 5 |
| SHR3EXX110-X-3P3 | 30 | 55 | 75 | 110 | D | 5.2 |
| SHR3EXX150-X-3P3 | 37 | 75 | 90 | 150 | D | 5.2 |
Note:
1. 1T5 means 1.5A, 4T5 means 4.5A, 7T5 means 7.5A in Rated current.
2. Other voltage classes can be made to order.
Single-phase Single-control (1P1 Model Selection):
| Model | Motor power rating (Pe/kW) | SLR Rated current (le/A) | Structure (F) | Weight (kg) | |
|---|---|---|---|---|---|
| 220V | 400V | ||||
| SHR3EXX02-X-1P1 | 0.37 | 0.55 | 2 | A | 1 |
| SHR3EXX03-X-1P1 | 0.55 | 0.75 | 3 | A | 1 |
| SHR3EXX04-X-1P1 | 0.75 | 1.1 | 4 | A | 1 |
| SHR3EXX06-X-1P1 | 1.1 | 1.5 | 6 | A | 1 |
| SHR3EXX09-X-1P1 | 1.5 | 2.2 | 9 | A | 1 |
| SHR3EXX12-X-1P1 | 2.2 | 3.7 | 12 | A | 1 |
| SHR3EXX20-X-1P1 | 3.7 | 5.5 | 20 | C | 2.4 |
| SHR3EXX30-X-1P1 | 5.5 | 7.5 | 30 | C | 2.4 |
| SHR3EXX37-X-1P1 | 7.5 | 11 | 45 | C | 2.4 |
In applications with conventional loads:
Such as water pumps, compressors, ventilation equipment, conveying equipment, etc. The SHR3E soft starter can be selected according to the rated power of the electric motor. (Note: For heating equipment, the selection can be made according to the rated current.)
For applications with heavy loads:
Such as centrifugal fans, mixers, grinders, blenders, or equipment that needs to be frequently started within a short period of time, SOSICN recommends that you select a soft starter one rating higher than the rated power of the electric motor.
Application Diagram
Parameters
| General Parameters | |
|---|---|
| Frequency | 50/60Hz±5Hz |
| Rated Main Voltage | 220-500±10% VAC (chosen by customer); 400VAC±10% (acquiescent) |
| Control Source Voltage | 100-240VAC-15%+10% or 24VDC (chosen by customer); 100-240VAC±10% (acquiescent) |
| The motor adapted | Three-phase squirrel-cage induction motor |
| Times of start per hour | <5 at 400% FLA |
| Operating data | |
| Motor rated operational current | Motor full load current: 1.5-150A |
| Initial voltage | 30%~70% Un |
| Start Slope | 1-30 seconds |
| Stop Slope | 0-30 seconds |
| Motor protections | |
| Over current | During start, operation, stop, output current over limit |
| Unbalanced Current | Output current unbalanced level beyond the setting |
| I²t overload | May set to 10A, 10… overload protection base on the setting to delay protection stop |
| Missing phase/ No voltage | Stop the softstarter when 1 or 2 phases failed Or no voltage input |
| Thyristor(SCR) overtemp | Stop the softstarter when the radiator temperature rises above 80℃ |
| Phase sequence | Forbid starting when the input phase sequence is wrong (If the function is unnecessary, please tell us before ordering) |
| Under current | Stop the softstarter when the current lower than under current protection value |
| Max start time | Stop the softstarter when the time of starting process exceeds the max start time |
Rapid fuse
| Model | SCR I²T (A²S) | Fuse rating |
|---|---|---|
| SHR3EXX1T5-X-3P3 | 70 | 5A |
| SHR3EXX2T2-X-3P3 | 150 | 10A |
| SHR3EXX03-X-3P3 | 270 | 10A |
| SHR3EXX4T5-X-3P3 | 610 | 16A |
| SHR3EXX7T5-X-3P3 | 1700 | 25A |
| SHR3EXX 11-X-3P3 | 3630 | 32A |
| SHR3EXX 15-X-3P3 | 5000 | 40A |
| SHR3EXX22-X-3P3 | 7500 | 50A |
| SHR3EXX30-X-3P3 | 10000 | 63A |
| SHR3EXX37-X-3P3 | 11000 | 100A |
| SHR3EXX45-X-3P3 | 12000 | 160A |
| SHR3EXX60-X-3P3 | 15000 | 200A |
| SHR3EXX75-X-3P3 | 18000 | 250A |
| SHR3EXX90-X-3P3 | 40000 | 315A |
| SHR3EXX110-X-3P3 | 60000 | 315A |
| SHR3EXX150-X-3P3 | 100000 | 400A |
Product Structure & Schematic Diagram
Product Structure Size
Schematic Diagram
Frequently Asked Questions (FAQ)
What is the power range and motor type suitable for the SHR3E soft starter?
The SHR3E soft starter is designed for three-phase asynchronous squirrel-cage induction motors with a power range of 0.75-90kW.
Does the SHR3E soft starter require an external bypass contactor?
No, all models in the SHR3E series feature built-in bypass relays, eliminating the need for users to install external bypass contactors, which saves installation space and reduces energy consumption.
What control and communication capabilities does it offer?
It features direct parameter settings via three potentiometers (starting time, stopping time, and initial voltage). For communication, it includes an optional RS-485 interface supporting Modbus RTU protocol for remote control and real-time monitoring.
What integrated protection features are built into this soft starter?
It offers comprehensive protection functions, including over-current, over-current delay, overload (CLASS10A, CLASS10, CLASS20, CLASS30), three-phase current imbalance, phase loss/under-voltage, phase sequence, and SCR over-temperature protection.
How should I choose the right model for heavy-load applications?
For conventional loads like water pumps and compressors, selection can be based on the rated power of the motor. For heavy loads like centrifugal fans, mixers, or grinders, it is recommended to select a soft starter that is one rating higher than the rated motor power.
What is the environmental protection level of the SHR3E soft starter?
The SHR3E soft starter features an integrated structure design with an IP21 protection grade, allowing it to effectively resist dust, moisture, and corrosive gases for a prolonged service life.