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China SHMV-YTG Medium Voltage Soft Starter - High-Quality Suppliers & Factory Solutions for Large Motors
Structural Features
The device consists of a handcart type vacuum circuit breaker, SHMV-YTG soft starter, and a bypass vacuum contactor.
- The cabinet is made of 2mm aluminum-zinc steel plate, processed by CNC numerical control equipment, and connected with high-strength bolts. The overall protection level is IP4X.
- The cabinet is divided into four separate functional unit compartments: the trolley compartment room, the high voltage bus room, the high voltage cable room, and the high voltage soft starter room.
- The integrated cabinet design of high-voltage switch, soft-start cabinet, and bypass cabinet is small in size, saving the space of the distribution room while delivering the same power.
- The footprint of this product is only 30%-50% of soft starters using other methods. Other equipment can be perfectly combined and cabinet-installed.
- It is especially suitable for technical transformation and replacement where on-site space is limited, as well as for replacing start-up products of similar manufacturers. (Switch cabinet split design is also optional).
Applications
Widely used in power systems, metallurgy, mining, petroleum, chemical, water treatment, and other industries for high-voltage squirrel-cage AC asynchronous & high-voltage synchronous motors. It serves functions such as high-voltage motor soft start, soft stop, control, and protection. Voltage range: 3.3~10KV controlled motor, power: 220KW~5600KW.
Performance and Parameters
- Control mode: Kick start, voltage ramp, constant current, speed control (Optional).
- Starting mode: Soft start, straight up, soft stop, free stop.
- Operation mode: Local cabinet control, external control, communication remote control (Optional).
- Communication mode: RS 485 interface: Modbus protocol and Profibus protocol (Optional).
- Analog output: Motor operating current, signal 0-10V or 4-20mA or 0-20mA.
- Initial voltage: 10% to 50% (expandable to 5% to 80% Un).
- Current limiting multiple: 100% to 400% In (expandable to 500% In).
- Start/stop time: 1~30S (expandable to 90S).
- Start jump: Current 70%-700% In (kick time 0~10S).
- Parameter settings: 1 - control panel button, 2 - background communication settings.
- LCD display: Operating current, number of starts, running time, and failure information. Default language: Chinese (English), German, French, Spanish.
- Noise: < 80db.
- Continuous start interval: In ambient temperatures greater than 40°C, if the starting current is large (at 400% In), the interval is not less than 30 minutes. When the temperature is low or the starting current is relatively small, the interval can be properly reduced, but must be at least 15 minutes.
- Cooling method: Natural cooling.
- Operating power: AC220V 50Hz 600VA (Special requirements must be specified separately).
- Main circuit power frequency withstand voltage: 42KV/1 minute (except power unit).
- Protection Mode: Compound (see Protection Features).
- Protection class: IP42 (IP54 optional for special requirements).
Working Environment and Conditions
- Operating air temperature: -10°C to 50°C. Storage temperature: -20°C to 70°C (must be stated when ordering in special circumstances).
- Relative humidity: No more than 95% at +50°C. At lower temperatures, greater relative humidity is allowed.
- Surrounding environment: Free of explosion hazards and corrosive gases. Pollution level: ≤ 3 (up to 4).
- Altitude: < 1000m (expandable to 4000m).
- Vibration: Permitted vibration frequency at the installation site is 10Hz to 150Hz, with a vibration acceleration of not more than 0.5m/s².
- Main power supply: 10KV/50Hz three-phase voltage. Continuous fluctuation does not exceed -15% to +10%.
- Frequency fluctuation: Does not exceed ±5Hz; the rate of change of frequency does not exceed ±1% per second.
Note: The standard configuration is indicated in black font. If there are other requirements specified in the parentheses, they will be detailed in the contract when ordering.
High Voltage Soft Starter Integrated Cabinet System Diagram and Appearance
Product Selection & Size
The 2.3KV voltage level can be replaced with products of the 3.3kv voltage grade; 4.16kv and 6.6kv voltage grades can be replaced with the 6kv voltage grade product. The soft starter must be selected based on the rated current on the motor nameplate (even if the motor is not running at full load). The corresponding KW values given below are for reference only. Please pay attention to different voltage levels: when the motor power is the same, the current may differ. Please calculate the current according to the power before confirming the model selection.
| Model | Voltage (kV) | Current (A) | Reference Power (kW) | Dimensions WxDxH (mm) |
|---|---|---|---|---|
| SHMV-YTG-3.3-50 | 3.3 | 50 | 220 | 1000X1500X2300 Standard; 800X1500X2300 Customized |
| SHMV-YTG-3.3-100 | 3.3 | 100 | 450 | |
| SHMV-YTG-3.3-150 | 3.3 | 150 | 630 | |
| SHMV-YTG-3.3-200 | 3.3 | 200 | 900 | 1000X1500X2300 |
| SHMV-YTG-3.3-300 | 3.3 | 300 | 1250 | 1000X1500X2300 |
| SHMV-YTG-3.3-400 | 3.3 | 400 | 1800 | 1200X1500X2300 |
| SHMV-YTG-6-50 | 6 | 50 | 400 | 1000X1500X2300 Standard; 800X1500X2300 Customized |
| SHMV-YTG-6-100 | 6 | 100 | 800 | |
| SHMV-YTG-6-150 | 6 | 150 | 1250 | |
| SHMV-YTG-6-200 | 6 | 200 | 1600 | 1000X1500X2300 |
| SHMV-YTG-6-300 | 6 | 300 | 2400 | 1000X1500X2300 |
| SHMV-YTG-6-400 | 6 | 400 | 3200 | 1200X1500X2300 |
| SHMV-YTG-10-50 | 10 | 50 | 690 | 1000X1500X2300 Standard; 800X1500X2300 Customized |
| SHMV-YTG-10-100 | 10 | 100 | 1400 | |
| SHMV-YTG-10-150 | 10 | 150 | 2000 | |
| SHMV-YTG-10-200 | 10 | 200 | 2800 | 1000X1500X2300 |
| SHRMV-YTG-10-300 | 10 | 300 | 4000 | 1000X1500X2300 |
| SHRMV-YTG-10-400 | 10 | 400 | 5600 | 1200X1500X2300 |
Note: The above are typical product data. Specific parameters are based on the actual product.
Technical Indicators
General Information
| Parameter | Specification |
|---|---|
| Main power supply | Voltage: 2300V, 3300V, 4160V, 6000V~6900V, 10000V~11000V, +10% to -15% |
| Insulation level | For 2300V, Insulation voltage as 6900V |
| For 3300V, Insulation voltage as 9900V | |
| For 4160V, Insulation voltage as 12,500V | |
| For 6000~6900V, Insulation voltage as 19,500V | |
| For 10000~11000V, Insulation voltage as 32,500V | |
| Frequency | 45~65Hz (frequency automatic adjustment) |
| Control voltage | 110~230V (customized) +10% to -15% |
| Control input & output voltage | Same as control voltage or customized: 24~230VAC/DC |
| Load | 3 phase 3 wire squirrel cage induction motor |
Working Parameters
| Parameter | Specification |
|---|---|
| Soft starter FLC | The rated current of the starter can be found in the selection guide. |
| Motor FLA | The full load current of the motor can be selected between 33% and 100% of the starter FLC. |
| Pump control curve | 6 curves are optional to prevent overpressure during pump start and water hammer effect during stop. |
| Pulse start | With 70~700% FLA current pulse, adjustable pulse time: 0~10 seconds for starting high static friction loads. |
| Initial voltage (*) | Can be set to 10-50% Un (10~80% Un can be provided customized). |
| Current limit (*) | Can be set to 100-400% of motor FLA (can be extended to 100-500%). |
| Start ramp up time (*) | 1-30 seconds adjustable (can be extended to 1~90S). |
| Stop ramp down time (*) | 1-30 seconds adjustable (can be extended to 1~90S). |
| Double adjustment | Set parameters for start voltage, current limit, acceleration, deceleration time, and dual start/stop settings of the motor FLA. |
| Speed feedback and linear increase | 12 curves selectable to control motor speed linear gain by speed feedback. |
*Extensible range details contact factory
Motor Protection
| Protection Type | Description |
|---|---|
| Start times limit | Maximum allowable start times in the set start cycle: 1 to 10 starts in a 1 to 60 minute cycle. |
| Start prohibited | After the "start over frequency" indication is given, the prohibited start time is adjustable from 1 to 60 mins to limit the restart. |
| Long start time (stall protection) (*) | If the motor has not reached full speed within the set maximum start time of 1~30 seconds (extended 1~90 seconds), the starter trips protection. |
| Electronic fuse | When the current reaches 850% FLA during start, or reaches 200%~850% FLA, the starter trips in one cycle. |
| Electronic overload (I²t) | Can be set at 75%~150% FLA; the overload curve can be selected by setting the trip time (at 500% FLA for 1~10S). |
| Under current | Main current drops below 20%~90% FLA, time delay is 1-40 seconds, starter trips protection. |
| Under voltage (**) | Main voltage drops below 50%~125% Un, time delay 1-10 seconds, starter trips protection. |
| Over voltage | Main voltage rises to more than 110%-125%, time delay is 1-10 seconds, starter trips protection. |
| Phase loss (low/high frequency) | The starter trips when 1 to 2 phases of the mains are missing or the frequency deviates from the normal frequency by ±5 Hz. |
| Phase sequence | The starter trips when the phase sequence is incorrect. |
| Wrong connection/shorted SCR | If the motor fails to connect properly to the starter, or if there is a thyristor short-circuiting the starter, start is prohibited. |
| Heatsink overtemperature | When the heat sink temperature is higher than 85°C, the starter trips. |
| External fault 1 & 2 | The starter trips after 2 seconds when the external fault contact closes. |
| Current unbalance | When the main loop current imbalance exceeds the set value and exceeds the delay time, the starter trips protection. |
| Ground current fault | When the ground current exceeds the set value and the delay time is exceeded, the starter trips protection. |
| No start signal of main power (***) | When the starter is connected to the 3-phase main voltage and no soft start signal is added for over 30S, the starter trips protection. |
| Can't switch to bypass fault | When the starter motor enters full pressure and cannot switch to bypass, the starter trips protection. |
Frequently Asked Questions (FAQ)
What are the main structural components of this high voltage soft starter cabinet?
The device consists of a handcart type vacuum circuit breaker, the SHMV-YTG soft starter, and a bypass vacuum contactor. It features an integrated cabinet design combining the high-voltage switch, soft-start cabinet, and bypass cabinet.
Which applications and motor types is this equipment suitable for?
It is widely used in power systems, metallurgy, mining, petroleum, chemical, water treatment, and other industries. It is designed for high-voltage squirrel-cage AC asynchronous and high-voltage synchronous motors with a voltage range of 3.3~10KV and a power range of 220KW~5600KW.
What starting and control modes does the system support?
The starter supports several starting modes including soft start, straight up, soft stop, and free stop. Control modes include kick start, voltage ramp, constant current, and optional speed control.
What are the environmental requirements for the installation and operation of the cabinet?
The operating temperature must be between -10°C and 50°C, and relative humidity should not exceed 95% at +50°C. The altitude must be below 1000m (expandable to 4000m), and the environment must remain free of explosion hazards and corrosive gases.
What safety protections are integrated for the motor?
It features comprehensive motor protection including start times limit, electronic overload (I²t), under/over voltage protection, phase loss, wrong connection/shorted SCR protection, heatsink overtemperature protection, current unbalance, and ground current fault protection.
How should I select the correct model and cabinet size?
The soft starter must be selected based on the rated current on the motor nameplate (even if the motor is not running at full load). Since current varies at different voltage levels for the same motor power, you must calculate the current according to the power before confirming the selection.