Electric Valve Actuator

With control module and big capacity contactors built in, these series electric valve actuators need no more control box.

Electric Valve Actuator:

1, Service Environment and Main Technical Parameters

1)  Power Supply

 Remote Control: DC 24V, minimum value for on of control signal gate is 20V, and maximum value for off is 1.5V; actuating current of control signal is 15 mA (approximate the load of 1.6kΩ, 0.36W)

2) Service Environment

Flameproof type: according to the standard, these actuators are provided with Class dI (as electric apparatus for colliery mine) and Class dIIBT4 (for plant and works). Class dIIBT4 is suitable to the atmosphere of explosive gases mixture specified by groups T1~T4 of Class IIA and Class  IIB. Class dIICT4 is for special order (for details, see Std GB3836.12000 ELECTRICAL APPARTAS FOR EXPLOSIVE GAS ATMOSPHERESPART I: GENERAL REQUIREMENTS )

   (1) Normal type: no corrosive, flammable or explosive media

   (2) Ambient temperature: -20~60

   (3) Relative humidity: ≤90% (at 25)

   (4) Protection: IP55 (IP67 for special order)

3)These actuators are for short time duty.

   The rated operating time is 10 minutes.

2.General Description

Integrated normal type and integrated flameproof type part-turn electric valve actuators consist of QB12.5~400 and QB12.5~400B electric valve actuators and additional electric control elements. With control module and big capacity contactors built in, these series electric valve actuators need no more electric control box. And so they are small in size and of complete functions (provided with automatic discrimination of phase sequence, protection of phase-lacking, four modes of remote control, and the function of emergent valve shut in addition), simple in installation and wiring (once the 3-phase power supply is connected, can local operation be carried out), easy to maintain and repair (electric circuit is controlled by DC 24V voltage, electric elements are connected one another with plugs and sockets).

Performance index of these products meets with the requirements of Std JB/T 85281997 TECHNICAL SPECIFICATIONS OF NORMAL ELECTRIC VALVE ACTUATORS and performance index of explosion-proof type actuators meets with Std GB3836.12000 ELECTRICAL APPARTAS FOR EXPLOSIVE GAS ATMOSPHERESPART

I: GENERAL REQUIREMENTS and Std GB3836.22000 ELECTRICAL APPARATUS FOR EXPLOSIVE GAS ATMOSPHERESPART

2: FLAMEPROOF ENCLOSURE d and Std JB/T 85291997 TECHNICAL SPECIFICATIONS OF FLAMEPROOF ELECTIRIC VALVE ACTUATORS.

Electric Valve Actuator