Payment & Shipping Terms:
electro hydraulic actuator,
electro hydraulic machinery
Non-intrusive Intellectualized Electric Rotork Valve Actuator SND- ZTD5-50 4 ~ 20 mA DC
Changzhou power station auxiliary equipment General Factory Co., Ltd.
1. non-intrusive, easy to commission;
2. precise and reliable measurements of position limit and torque level;
3. providing double-speed (speed-changeable and slow closing) functions
4. providing comprehensive data logging;
5. self-diagnostic and self-adapted functions;
6. automatic phase-rotation-corrective function;
7. trouble-diagnostic function in operation;
8. network transmission functions;
9. overheat-protection for electric motor;
10. transient reverse protection,
11. language option of page layout,
12.locked password function of control status.
1 Power supply: 380 V ± 10%, 50 Hz ± 1% (For other specifications of voltage and frequency , special
order is needed.)
2 Environmental temperature: -20~60ºC (- 40~ +70ºC available for special order)
3 Relative humidity: ≤95% (+25℃)
4 Signal: input : 4 ~ 20 mA DC ; output: 4 ~ 20 mA DC
5 Deadband : 0.5% ~ 9% adjustable
6 Duty: S5 (intermittent operation with electrical braking), minimum load held ratio 25%, maximum
times of operation is 1200 cycles/hour
7 Enclosure protection: IP68 (4 meters below water surface for 68 hours)
8 Flameproof mark: Exd Ι, ExdibⅡBT4 and ExdibⅡCT4, for hazardous zone with Class ⅡB ~ⅡC
explosive gases of temperature groups T1~T4.
CHANGZHOU-SCHNEIDER (abr. as SND) non-intrusive intellectualized electric modulating actuators
are products of new generation developed by cooperation on the basis of introducing the newest control
technology from Schneider.
SND non-intrusive intellectualized electric modulating actuators consist of three ranges: linear type, multi-turn type and angular travel type (There are two structures for angular travel type: integral and
combined). They are suitable for industrial-process loop control systems and able to control gate valves,
globe valves, throttle valves, ball valves, butterfly valves and various modulating valves precisely. These
products are divided into two models depending on service environment: normal and explosion-proof.
Their general performance is conformed to the requirements of Standard JB/T 8219- Electrical Actuators
for Industrial-process Measurement and Control System. And the explosion-proof performance of
explosion-proof models is onformed to the requirements of Standard GB 3836.1- 2000 Electrical
Apparatus for Explosive Gas Atmospheres–Part Ⅰ: General Requirements, and Standard GB 3836.2-
2000 Electrical Apparatus for Explosive Gas Atmospheres–Part Ⅱ: Flameproof Enclosure “d”.