The Group 75 rotary actuator is purposefully designed to meet the requirements of large boiler windbox dampers. It is based on the same technology as the Group 11 rotary actuator and, therefore, provides the same performance, reliability and maintenance advantages. What makes the Group 75 different is its compact packaging and available high temperature capability. The compact design makes it easier to fit into the tight spaces that are typical of boiler windbox applications. The optional high temperature package makes the Group 75 more resistant to the high temperatures that exist close to the boiler face. Important specifications include:
75系列主要为满足大型锅炉风箱挡板而设计。该系列的电机设计和控制技术类似于11 系列，所以可以提供类似优越性能。所不同的是，75系列为紧凑型设计，而且可以耐受更高的温度。紧凑的外形方便其安装在锅炉风箱部位狭小的空间。耐高温的性能使其适于安装在温度很高的靠近锅炉表面的位置。主要规范如下：
- Torque output: 55 Nm and 108 Nm
- Stroke speed: 24 to 40 seconds/100 degrees depending on motor
- Input power: 120 V, 1-phase 50 or 60 Hz
- Standard operating temperature range -20C to 85C
- Optional high temperature service: -20C to 120C
- Optional low temperature service: -50C to 85C
- Control service –
- continuous modulating control,
- multi-position control,
- open/close control
- Available control signals and digital networks –
- 4-20ma (1-5V),
- Foundation Fieldbus,
- Profibus PA
- Minimum positioning step size – 0.1% of span
- Enclosure is Type 4X weather-proof and IP66/IP68
- 输入扭矩: 55 Nm 和 108 Nm
- 行程速度24 - 40 秒/100 度，依电机而定
- 输入电源: 120 V 单相电流, 50 或 60H
- 标准操作温度：-20C – 85C
- 备选耐高温特性：-20C – 120C
- 备选耐低温特性：-50C – 85C
- 控制性能 –
- 控制信号和数字网络 –
- 4-20ma （1-5V）
- 基金会现场总线
- Profibus-PA
- 精度：总行程的0.1%
- 外壳：Type 4X ，IP66/IP68
