MOKA (52 325 - 52 329)
Electric rotary (90°) actuators for ball valves and flaps - outside containment of nuclear power plants.
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The actuators MODACT ® MOKA are designed for special valves installed out of the containment of nuclear power plants with reactors type VVER and in attended spaces of nuclear power plants with reactors type RBMK. According to ranking within safety classes and purpose of their use, the actuators MOKA belong to the elements: 2N; 3N; 4N; 2Z; 2P; 2O; 2NZ; 2NO according to OPB-88/97 and make it possible to control shut-off and regulation valves by reversible rotary motion with turning angle of the output part up to 90°, including cases requiring tight closure in limit positions. A typical example of using is control of ball valves, flaps, and similar devices in the regime of remote control and automatic regulation. The actuators are installed directly on a controlled organ.
Technical data
| MOKA | ||||||
| Type number | 52 325 | 52 326 | 52 327 | 52 328 | 52 329 | |
| Tripping torque [Nm] | 16-80 | 63-125 | 125-250 | 250-500 | 500-1000 | |
| Tripping force [kN] | ||||||
| Adjusting time [s/90°] | 10-80 | 10-80 | 20-160 | 20-80 | 40-160 | |
| Position-changing velocity | [min-1] | |||||
| [mm/min] | ||||||
| Working stroke | [°] | 90 | 90 | 90 | 90 | 90 |
| [ot] | ||||||
| [mm] | ||||||
| Supply voltage | 1x 230 V, 50 Hz | |||||
| 24 V, 50 Hz | ||||||
| 1 x 110 V, 50 Hz | ||||||
| 3 x 230 / 400 V, 50 Hz | ✔ | ✔ | ✔ | ✔ | ✔ | |
| Control | Two position On-Off | ✔ | ✔ | ✔ | ✔ | ✔ |
| Three position | ||||||
| Continuous | ||||||
| PROFIBUS | ||||||
| Position sensing | Resistance transmitter (R) | ✔ | ✔ | ✔ | ✔ | ✔ |
| Digital (I) | ||||||
| Current transmitter (I) | ✔ | ✔ | ✔ | ✔ | ✔ | |
| Position interrupt | ✔ | ✔ | ✔ | ✔ | ✔ | |
| Torque-initated interrupt | ✔ | ✔ | ✔ | ✔ | ✔ | |
| Manual actuation | ✔ | ✔ | ✔ | ✔ | ✔ | |
| Explosion-proof design | ||||||
| Type of enclosure | IP 67 | IP 67 | IP 67 | IP 67 | IP 67 | |
| Weight - depending on design (Al/cast iron) and on motor [kg] | 7,5 | 13 | 13-21 | 26-27 | 43-45 | |