SD High-Protection Inverter
The SD Series Sealed Inverters have an ingress protection (IP) rating of IP65 (available by pre-order; IP55 as standard). They are designed for dust, water, and corrosion resistance, making them suitable for complex environments such as the chemical, coal mining, and textile industries. As power control equipment specifically engineered for harsh conditions, they feature a sealed structure combined with high-power waterproof fans and closed-cell foam gaskets—these components ensure effective heat dissipation to prevent damage caused by high temperatures. Additionally, the inverters support multi-speed control, PID regulation, overload/overvoltage protection, and continuous operation during momentary power failures.
● Power Range: SD350: 220V/380V 0.75-7.5GB; SD800: 380V 0.75-110G
● Input Voltage: 220VAC / 150~ 400VDC / 380VAC / 250 ~ 800VDC
● Built-in PID: Facilitates closed-loop control of pressure, flow, temperature, etc.
● PLC Multi-Speed: Up to 16-speed operation can be achieved via built-in PLC or control terminals
● Motor Types: AC Asynchronous Motor, AC Permanent Magnet Synchronous Motor (SD800S)
● Input Terminals: 5-channel multi-function digital terminal input (X1~X5)
● Output Terminals: External 10V/24VDC power supply
● Multiple Encoders: Supports encoders such as collector, differential, and resolver
● V/F Curves: Three modes: Linear, Multi-point, and Nth Power
● V/F Separation: Two modes: Full Separation and Half Separation
● IP55 ingress protection rating, suitable for various harsh environments
● Large starting torque, with 200% rated starting capability
● Compact structure and small size; all-metal housing offers better durability and heat dissipation performance
● Fast response to overcurrent and overvoltage suppression
● Optional switch-mode power supply (SMPS)
● Fully sealed structure, providing water resistance, dust resistance, and shock resistance
● Adopts double-ball bearing, waterproof, and high-speed cooling fans
● Supports simultaneous display of frequency and current; the control panel is available as a standard option
High voltage protection is a professional term in the field of electrical engineering, referring to the technical protective measures taken to prevent electrical equipment or systems from being damaged by excessively high voltage. The term was published as an electrical engineering term in 1998 and included in the first edition of "Electrical Engineering Terminology. Its technological development includes the design of multi-voltage rectifier resonant converters, which improves system efficiency to 90% by optimizing the power supply topology, and the experimental verification platform output power reaches 8kW . Electrical isolation technology achieves high voltage protection by blocking the flow of current. The main isolation methods include capacitive isolation, magnetic isolation and optical isolation, among which enhanced isolation must meet the IEC 60747 standard. Typical applications cover the isolation of 800V battery packs in electric vehicles and insulation testing of power grid infrastructure. Related products include the UCC12051-Q1 power module that supports 5kVRMS isolation.
