Shenzhen SINE Electric Co., Ltd.
SINEE is the motor-drive and control brand of Shenzhen SINE Electric Co., Ltd., established in 2003. Its company brochure describes production testing of circuit assemblies and complete drives, alongside separate electrical, motor-performance and environmental laboratories. The EM730 range adds a practical application focus: open-loop motor control and a single-pump pressure-control macro with distinct sleep and wake-up logic.
A motor-control business with a documented development sequence.
The company’s own history connects its first inverter, development management and physical operations.
- 2003
SINE003 and company foundation
The history identifies the first inverter generation alongside SINEE’s establishment in Shenzhen.[1]
- 2012
Integrated product development
SINEE records introduction of modern enterprise management and IPD management.[1]
- 2017
Wuhan base construction begins
The milestone describes the start of construction, rather than an undated production opening.[1]
- 2025
Runzhi headquarters inaugurated
The official timeline dates the new Shenzhen headquarters to 15 April 2025.[1]
Company identity behind the brand
The corporate profile names Shenzhen SINE Electric Co., Ltd. and describes research, production and sales of motor-drive and control systems for industrial automation. The history records its 2021 Shanghai Science and Technology Innovation Board listing. The 25 October 2025 exchange disclosure identifies 深圳市正弦电气股份有限公司 and securities code 688395, providing a separate public-company record for the manufacturer behind the SINEE brand.[1][6]
Shenzhen headquarters, a Wuhan production base, and automated testing.
The August 2025 corporate file connects the operation footprint with PCBA and finished-product testing.
Different locations, different operating roles
The brochure describes research, production and service bases in Shenzhen, Wuhan, Suzhou and Wuxi. Its business-distribution map labels Wuhan as the production base, Shenzhen as headquarters and Wuxi as a branch. The contact page of that file names the Wuhan company at 82 Gaoxin Fifth Road and the Shenzhen headquarters at Runzhi R&D Center. This gives a purchaser a useful distinction between the corporate contact and the production operation when defining order responsibility.[4]
Circuit assemblies and complete drives have test stages
The supply-chain section describes self-developed automatic test equipment, or ATE, used for both PCBA and complete-machine testing. Its production illustrations show surface-mount equipment and a separate assembled-product line. The surrounding account covers planning, manufacturing coordination, digital warehousing and logistics. For an order requiring traceability, the relevant discussion is how the proposed model and production lot connect to its inspection and test records.[4]
Electrical performance and environmental work are separate test scopes.
Printed pages 13–14 of the company brochure name the facilities and their different responsibilities.
Components, motors and communication
The device laboratory lists transistor analysis, LCR simulation/analysis and device-level examination. The function/performance laboratory names permanent-magnet and asynchronous-motor test platforms, basic-function testing and multi-machine communication testing. Those facilities relate component behaviour to complete motor-control systems. A project requiring a particular motor or network can ask which model-specific test scope is included in the proposed engineering handover.[4]
Electrical safety and simulated environments
The EMC/safety laboratory lists withstand-voltage, insulation, impulse, overload, mechanical and short-circuit tests. A separate simulated-environment laboratory covers high/low temperature, humidity, corrosion and dust. These are different investigation areas, not sequential assembly stations. The brochure’s list provides a basis for asking about the applicable test method and configuration for a difficult cabinet or site environment.[4]
EM730 selection starts with a complete model and its duty current.
Two entries from table 1-1 of the June 2021 V100 guide show why the kW label alone is insufficient.
Swipe horizontally to compare all columns.
| V100 model · three-phase 340–460 V | Motor power | Heavy-duty current | Light-duty current |
|---|---|---|---|
| EM730-4R0-3B | 4.0 kW | 9.4 A | 10.5 A |
| EM730-7R5-3B | 7.5 kW | 17 A | 20.5 A |
Motor version and control mode
The V100 guide identifies EM730 for asynchronous motors and a non-standard EM730 version for permanent-magnet synchronous motors. It describes VVF and sensorless vector control, speed and torque outputs, and optional Wi-Fi or serial access for commissioning. The current web page presents the family as a general open-loop drive with Modbus RTU. A permanent-magnet enquiry should retain the ordered variant and its applicable guide, rather than assuming the family name alone defines the configuration.[2][3]
Temperature ratings include installation conditions
The guide’s introductory feature list describes operation at 50°C without derating, while its installation chapter specifies ventilation and enclosure-related requirements. Its altitude notes require derating above 1,000 metres and give a separate thermal derating rule above 50°C. For a cabinet installation, use those conditions together: motor current, selected duty, temperature around the drive, altitude and cooling arrangement belong to the same selection record.[3]
A single-pump macro that sleeps on frequency and wakes on pressure.
SINEE publishes this as an EM730 application function. It describes control behaviour rather than a named customer’s measured result.
Pressure demand controls the restart
The application description separates two signals: frequency determines sleep, while pressure determines awakening. It also names an over-pressure alarm and PID-feedback disconnection protection. For a pumping project, the brief can therefore define the sensor, pressure setpoint, sleep condition, wake-up pressure and loss-of-feedback response. These choices should reflect the hydraulic system and be verified during commissioning rather than copied from another installation.[5]
The operator sees pressure and electrical status
After choosing the water-supply macro, the page lists output frequency, pressure setpoint, pressure feedback, output current and the AI2 analogue-feedback value among the displayed states. It describes switching between those states and adjusting the pressure reference with the panel’s rotary control. That is useful at handover: agree the displayed pressure unit and scaling, which values the operator needs to monitor and how the accepted setpoint is retained.[5]
Feedback drives, servo axes and controller hardware remain separate products.
The company brochure lets a machine builder identify which part of the system is actually being quoted.
An EM730 drive is one component of a possible system
The August 2025 product network places inverters and servo drives alongside SMC300 controllers, SMC200 PLCs, motors, HMIs, software and accessories. Its EM760 description names PG-feedback and bus-expansion options, while EM730 is described around open-loop speed control. The same network lists EM730-PV as a solar-pump product. A mains-powered single-pump pressure application, a feedback-controlled motor and a solar-input system consequently need their own named product and document set.[4][5]
Preserve the accepted configuration
For a replacement EM730, record the full model, duty current, motor version, parameter backup and control connections. For the pump macro, add the pressure sensor range and signal scaling, sleep/wake logic and fault response. Where a controller or servo axis is included, show its separate role in the machine architecture. This makes the comparison between offers practical: the purchased hardware and the commissioning deliverables describe the same operating task.[3][4][5]
Explore SINEE products on VFDMatch.
Continue with the published series or exact model before preparing your request.
EM730-5R5-3B
Manufacturer-published model specifications. Confirm options, operating conditions and final sizing.
EM730-7R5-3B
Manufacturer-published model specifications. Confirm options, operating conditions and final sizing.
EM730-0R7-3B
EM730 three-phase model. Power and heavy/light-duty output currents are transcribed from the V100 user guide model table (printed page 8). Confirm installation conditions and options against the delivered revision.
EM730-1R5-3B
EM730 three-phase model. Power and heavy/light-duty output currents are transcribed from the V100 user guide model table (printed page 8). Confirm installation conditions and options against the delivered revision.
EM730-2R2-3B
EM730 three-phase model. Power and heavy/light-duty output currents are transcribed from the V100 user guide model table (printed page 8). Confirm installation conditions and options against the delivered revision.
EM730-4R0-3B
EM730 three-phase model. Power and heavy/light-duty output currents are transcribed from the V100 user guide model table (printed page 8). Confirm installation conditions and options against the delivered revision.
EM730-011-3B
EM730 three-phase model. Power and heavy/light-duty output currents are transcribed from the V100 user guide model table (printed page 8). Confirm installation conditions and options against the delivered revision.
EM730-015-3B
SINEE EM730-015-3B: 15 kW three-phase 380 V drive with built-in braking unit. 32 A heavy-duty and 36 A light-duty output, 136 × 250 × 169 mm. Figures from SINEE's EM730 user manuals.
EM730-018-3B
EM730 three-phase model. Power and heavy/light-duty output currents are transcribed from the V100 user guide model table (printed page 8). Confirm installation conditions and options against the delivered revision.
EM730-022-3B
EM730 three-phase model. Power and heavy/light-duty output currents are transcribed from the V100 user guide model table (printed page 8). Confirm installation conditions and options against the delivered revision.
A brief that makes the next reply useful.
Copy these prompts and add your project details. Keep the same scope when comparing quotations.
- Complete EM730 code, applicable guide revision and motor type/variant
- Motor nameplate, chosen heavy/light duty and continuous/peak-current cycle
- Supply class, cabinet temperature, ventilation and site altitude
- For pumping: pressure sensor range, AI signal scaling and setpoint/display units
- Sleep-frequency and wake-up-pressure requirements with fault response
- Parameter backup, operator displays and separate PLC/servo/accessory scope
Buyer questions
What does SINEE’s ATE description cover?
The August 2025 company brochure describes self-developed automatic test equipment for both circuit-board assemblies (PCBA) and complete products.
How is EM730-7R5-3B rated in the V100 guide?
Table 1-1 lists 7.5 kW, 17 A heavy-duty current and 20.5 A light-duty current for the three-phase 340–460 V model. The selected duty and applicable revision belong with the order.
Does the EM730 pump macro wake up on frequency?
The published solution says sleep is determined by frequency and awakening by pressure. It also identifies over-pressure and PID-feedback disconnection functions.
Can I assume every EM730 is the same permanent-magnet configuration?
The June 2021 V100 guide distinguishes the asynchronous-motor EM730 from a non-standard permanent-magnet version. Confirm the offered variant and its current documentation.
Sources & editorial review
Company and product facts are drawn from the sources below. The project briefs and procurement notes are VFDMatch editorial analysis. Statutory disclosures establish company records; order-specific technical acceptance uses the applicable product documents.
- Official company history
SINEE company profile and milestones
2003 origin/SINE003, 2012 IPD, 2017 Wuhan construction and April 2025 headquarters. Timeline text is in the page’s Milestones panel.
Reviewed 2026-10-08 - Official product page
EM730 general open-loop product page
Family identity, VVF/SVC and Modbus RTU. Current page features are distinct from the June 2021 V100 manual’s configuration scope.
Reviewed 2026-10-08 - Manufacturer engineering manual
EM730 User Guide · V100, June 2021
Document 31010214, version 100: printed p.1 motor-version distinction, p.6 altitude/thermal notes, p.8 model currents and p.17 installation conditions. Complete 107-page file reviewed for those sections.
Reviewed 2026-10-08 - Manufacturer corporate brochure
SINEE Company Profile · August 2025 file
Printed pp.1–2 operation footprint; pp.13–16 laboratories, automated PCBA/complete-machine testing and supply-chain organization. File has 27 PDF pages.
Reviewed 2026-10-08 - Official application-function description
EM730 single-pump water-supply function
Frequency-based sleep, pressure-based wake-up, feedback-loss protection and water-supply macro displays; an application description rather than a named customer installation.
Reviewed 2026-10-08 - Shanghai Stock Exchange disclosure
SINE Electric 2025 exchange disclosure
25 October 2025 notice cross-checks the Chinese listed entity and code 688395. Used for identity, not product test results.
Reviewed 2026-10-08
Ready to define the configuration?
Bring your motor nameplate, load cycle and controller details to the next discussion.