Power Supply: Three-phase: 380Vac±10%, 50Hz±2% (three-phase three-wire system, TN-C); Single-phase: 220Vac±10%, 50Hz±2%;
Output Signal: 2 groups of limit contacts (open/close direction); 2 groups of over-torque contacts; 1 set of opening indicator signal (optional 4~20mA); 1 set of fault alert output contacts
Protection Level: IP67 (standard); IP68 (optional)
Introduction of Basic Type Multi-Turn Electric Actuator BD45-C8
Basic Type Multi-Turn Electric Actuator BD45-C8 acts as a core control device for industrial process control. In addition, it belongs to the BD-C8 product line, designed with a robust structural layout and stable operating performance. This actuator delivers a maximum output torque of 450N.m, making it suitable for medium-load valve control tasks in industrial pipelines. Furthermore, it adopts a double sealing structure, which effectively enhances electrical protection to reach the IP68 grade, ensuring durability in harsh outdoor or humid environments.
Beyond structural advantages, Basic Type Multi-Turn Electric Actuator BD45-C8 uses a high-quality aluminum alloy housing. The housing keeps the actuator’s weight at 38Kg, reducing installation effort and adapting to limited space conditions. Meanwhile, it complies with ISO5210:2017 (GB/T12222-2023) flange standards for easy matching with most industrial valves. For special connection needs, non-standard flange customization is also available. Moreover, it supports a 380Vac±10% 50Hz±2% three-phase power supply, compatible with common industrial power systems.
This actuator works stably in an ambient temperature range of -30℃ to +70℃, with a maximum operating frequency of 60 times per hour and a 33.3% duty cycle. It undergoes strict performance tests, including torque endurance and temperature resistance checks, to ensure reliable long-term use. It features simple installation steps and convenient debugging processes, reducing on-site maintenance time. Additionally, an optional explosion-proof version expands its application in hazardous areas like explosive gas zones.
Core Technical Performance Indicators of Basic Type Multi-Turn Electric Actuator BD45-C8
- Power Supply: Three-phase: 380Vac±10%, 50Hz±2% ; Single-phase: Corresponding parameters per Table 3-1; Special power: Specify when ordering
- Input Signal: No proportional control function; For on-off control scenarios only
- Output Signal: 2 groups of limit contacts (open/close direction); 2 groups of over-torque contacts; Opening indicator signal (optional 4~20mA)
- Output Contact Capacity: 250Vac/5A (both limit and over-torque contacts)
- Output Current Load Impedance: ≤750Ω (for optional 4~20mA position feedback)
- Protection Level: IP67 (standard); IP68 (optional)
- Ambient Temperature Range: -30℃～+70℃
- Operation Mode: Intermittent duty; Working frequency ≤60 times/hour; Continuous working time ≤15 minutes; Duty cycle ≤33.3%
- Lubrication: Advanced grease
- Installation: Mounting flange conforms to JB2920-81 or ISO5210:2017 (GB/T12222-2023); Custom non-standard flanges available per client specifications
- Cable Connection: Junction box has 3 threaded holes with plugs; 1×M27x2, 2×M20x1.5 (BD05 model);
- Cable diameter: 13-18mm (1 pc), 9-14mm (2 pcs); Explosion-proof variants require explosion-proof cable entry devices.
| Speed (rpm) | 12 | 24 | 36 | 48 | 72 | 96 | 144 | Weight（Kg） | |
| Rated Totque(N.m) | Single Phase | 250 | 200 | 140 | 100 | 70 | 30 | ||
| Three Phases | 450 | 450 | 450 | 350** | 300 | 250 | 150 | ||
| Motor Power(KW) | Single Phase | 0.6 | 0.72 | 0.72 | 0.72 | 0.72 | |||
| Three Phases | 0.37 | 0.75 | 0.75 | 1.6* | 1.69* | 1.6* | 1.6* | ||
| Capacitance(μF) | Single Phase | 45 | 85 | 85 | 85 | 85 | |||
| Stick current (A) | Single Phase | 7.5 | 12.5 | 12.5 | 12.5 | 12.5 | |||
| Three Phases | 6.9 | 13 | 13 | 28.85 | 28.85 | 28.85 | 28.85 | ||
| Rated current (A) | Single Phase | 6 | 8.2 | 8.2 | 8.2 | 8.2 | |||
| Three Phases | 1.4 | 2.23 | 2.23 | 4.77 | 4.77 | 4.77 | 4.77 | ||
Bus Card Introduction
Basic Type Multi-Turn Electric Actuator BD45-C8 comes with an integrated bus card for smart industrial control. The bus card supports common industrial communication protocols, including Modbus-RTU and Profibus-DP, ensuring seamless connection with most factory control systems. It enables real-time data transmission between the actuator and the central control room, allowing operators to monitor key parameters like torque, speed and valve position remotely.
The bus card follows strict industrial design standards, with strong anti-interference capabilities. It can maintain stable signal transmission even in noisy environments with high electromagnetic interference, such as near large motors or transformers. Basic Type Multi-Turn Electric Actuator BD45-C8 uses a plug-and-play design for the bus card, eliminating complex wiring steps and shortening installation time. The card is also equipped with a clear fault code display function. When anomalies occur, it outputs specific codes to help operators quickly identify and troubleshoot issues like communication failures or parameter mismatches.
Moreover, the bus card supports remote parameter backup and restoration. Operators can save the actuator’s working parameters to the control system, preventing data loss caused by card replacement or system reset. This function also simplifies batch parameter configuration for multiple actuators in the same project, improving work efficiency.
The function of the trajectory control mechanism
Basic Type Multi-Turn Electric Actuator BD45-C8 is equipped with a high-precision travel control mechanism for accurate valve stroke management. This mechanism consists of a decimal gear set, an actuator rod, a cam and multiple micro switches, working together to track and control valve rotation turns. The drive pinion in the actuator’s reducer connects to the decimal gear set, converting the output shaft’s rotation into precise stroke signals.
When matching valves that require more rotation turns, users can rotate the cam by 180° or 270° to trigger the micro switch at the correct position. This adjustment greatly enhances the actuator’s adaptability to different valve types, such as gate valves or globe valves with long stroke requirements. The mechanism is fitted with two pairs of micro switches: two for the valve’s open direction and two for the close direction. Each micro switch has both normally open and normally closed contacts, supporting flexible control circuit design for different industrial scenarios.
Basic Type Multi-Turn Electric Actuator BD45-C8 uses tight gear fitting in the travel control mechanism. The gears are processed with high-precision machining techniques to reduce wear during long-term operation. This design ensures consistent stroke control accuracy, avoiding valve operation errors caused by mechanical loosening or wear. It also aligns the actuator’s stroke with the valve’s actual opening/closing range precisely, ensuring reliable industrial pipeline control.
Application Scenarios
Basic Type Multi-Turn Electric Actuator BD45-C8 serves a wide range of core industrial fields with its stable performance. In the power industry, it is widely used in thermal power and hydropower plants. It controls the opening and closing of valves in water supply, steam and cooling water pipelines, ensuring steady media transmission and supporting the normal operation of power generation equipment. In the petroleum industry, it adapts to harsh on-site environments, such as oil refineries and oil storage terminals. It manages process valves in crude oil transportation and refining links, with excellent sealing performance to prevent media leakage.
In metallurgical plants, Basic Type Multi-Turn Electric Actuator BD45-C8 matches valves in smelting auxiliary systems, such as blast furnace cooling water pipelines. It withstands mild vibration and temperature fluctuations on site, maintaining stable operation. In municipal engineering, it plays an important role in urban infrastructure. It operates valves in urban water supply and drainage systems, as well as sewage treatment plants, controlling the flow of water and wastewater to ensure smooth infrastructure operation.
Its optional explosion-proof version expands its application to hazardous areas. It is suitable for IIA-IIC grade T1-T4 explosive gas environments, such as chemical workshops and gas storage stations. It acts as an ideal control device in these dangerous operation places, ensuring safe and reliable valve control. Its strong multi-scenario adaptability makes it a key component for modern industrial process control, supporting the efficient and safe operation of various industrial systems.
Related product: Multi-turn Electric Valve Actuators BD-C3 Series
Multi-turn Electric Valve Actuators BD-C3 Series are specially developed for linear motion valves. They match gate valves, globe valves, diaphragm valves and sluice gates and support flexible operation. They deliver stable valve opening, closing and precise regulation to meet diverse demands. As key equipment for modern industrial control, they enable remote, centralized and automatic operation. They come with complete functions, high reliability and advanced control systems. They adopt a compact structure, light weight and easy maintenance to reduce on-site working burden. The series offers tailored versions for special working conditions, including nuclear-grade models for 1E water-water reactor nuclear power plants that fully meet NB/T20010.11-2010. It also provides explosion-proof models for Class II and III hazardous environments, complying with GB3836.1-2021, GB3836.2-2021, GB12476.1-2013, JB/T8529-1997 and GB/T24923-2010 standards. With these strong advantages, the BD-C3 series serves widely in petroleum, chemical, energy and other key industrial fields.
