Qt Series 90 Degree Quarter Turn Explosion Proof Electric Actuators

• Customization: Available
• Certification: CCC, ISO
• Power Supply: AC110V
• Model NO.: Qt Series 90 Degree Quarter
• Power Source: Electric Power
• Temperature: Ordinary Temperature
• Connection: Flange
• Material: Stainless Steel
• Transport Package: Box
• Specification: Compact Design Light Weight Small Actuator with Fa
• Trademark: Origin China(Mainland) HS Code
• Origin: China

Product Description

Product Description

 

1. Product overview
QT Series Electric Actuator is used to control valves with 0° -270° rotation and other similar products, such as butterfly valves, ball valves, air throttles, baffle valves, plug valves and shutter valves. It can be widely applied in petroleum, chemical engineering, water treatment, shipbuilding, paper, power stations, heat supply, building automation, light industry and other industries. Driven by 380V/220V/110V AC power and controlled with 4-20mA current signals or 0-10V DC voltage signals, it can make the valve move to the required position for automatic control. The maximum output torque is up to 2,000Nm (The product has been certified by explosion-proof certification, with guaranteed quality).
2. Performance characteristics
2.1 Housing
The housing is made of hard aluminum alloy, with anodic oxidation treatment and polyester powder coating, contributing to its strong corrosion resistance. It has a protection class being IP67 and is also optional for IP68 and the explosion-proof type.
2.2 Motor
The fully enclosed squirrel-cage motor has a small size, a large torque and a small inertia force, with an insulation class F and a built-in thermal protection switch to prevent damages to the motor caused by overheating.
2.3  Manual structure
The handwheel design ensures its safety, reliability, labor saving and small size. When it's not energized, pull the clutch handle for manual operation. When it's energized, the clutch will be reset automatically. (Note: when the motor is not energized, the electric actuator will maintain a permanent manual state)
2.4 Indicator
The indicator is mounted on the central shaft and used to observe the valve position. The mirror adopts a convex lens design with no water accumulation, thus easier for observation.
2.5 Dryer
It's used for temperature control to prevent water condensation inside the actuator caused by temperature and weather changes, thus keeping internal electrical elements dry.
2.6 Limit switch
Mechanical + electronic limit. The mechanical limit screw is adjustable, being safe and reliable; while the electronic limit switch is controlled by the a cam mechanism, and the position can be set accurately and easily just by means of adjusting the mechanism simply, without battery support (All micro-switch contacts are silver contacts).
2.7 Torque switch
It can provide overload protection (except QT-005/008/010), which can automatically disconnect the motor's power in case of valve clogging or any foreign matter, thus more effectively protecting the valve and the electric actuator from being damaged (It's provided with factory settings, so please don1 change such settings without authorization).
2.8 Self-locking
The precision double worm gear mechanism can transmit the large torque efficient, featuring high efficiency, low noise (maximum 50 dB), a long life, a self-locking function to prevent reversion, and a transmission part being stable and reliable. It has been filled with high­performance grease before delivery, so the users needn't to do it again.
2.9 Anti-off bolt
When the housing is removed, the bolts are attached to the housing without falling off. All external bolts are made of stainless steel.
2.10 Installation
The bottom installation size is in line with the international standard 1505211, and the driven shaft sleeve is removable to be processed as required, thus being very adaptable. It can be installed either vertically or horizontally.
2.11 Circuit
The control circuit is in line with the single-phase or three-phase power supply standards; the circuit layout is compact and reasonable; and the connecting terminals can effectively meet requirements for various additional functions. The valve is opened and closed in place, and all are provided with passive contact outputs (also available for customization as required by customers).
2.12 Intelligent module
It adopts a control panel mixing single-chip and analog circuit with a high degree of integration and very low power consumption, and also all-metal external hanging installation so as to effectively isolate the actuator motor heat source and the control panel, thus greatly improving the anti-interference performance and temperature resistance of the software and hardware.
2.13 Digital display of valve position
In the opening or closing process of the actuator, the LCD screen provides real-time display of valve position changes in large numbers.
2.14 Automatic adjuS1ment of phase sequence
The intelligent actuator can automatically detect the phase sequence of the connected three-phase power supply, so the users needn't to consider it.

1. Main technical parameters, specifications

3.1 Technical parameters of QT series electric actuator

Model	Max output torque	90°Action time 60/50 Hz	Max shaft diameter	Motor class F	Rated current (A) 60/50HZ				Number of handwheel revolutions	Weight
					Single-phase		Three-phase
	Nm	S	mm	W	110V	220V	380V	440V	N	Kg
OT-010	100	18/22	Φ 20	25	1.10/0.95	0.55/0.54	0.30/0.30	N/A	10	7.5
OT-015	150	21/25	Φ22	40	1.65/1.67	0.88/0.84	0.31/0.31	0.30/0.31	10	8
OT-020	200	21/25	Φ22	40	1.67/1.67	0.89/0.85	0.31/0.31	0.30/0.31	11	17.3
OT-050	500	26/31	Φ35	120	3.60/3.62	1.55/1.58	0.59/0.59	0.58/0.58	13.5	23
OT-100	1000	31/37	Φ45	200	4.10/4.10	2.15/2.20	0.85/0.85	0.79/0.79	16.5	29
OT-200	2000	93/112	Φ65	200	4.10/4.10	2.15/2.20	0.85/0.85	0.79/0.79	49.5	75

3.2 Standard specifications

Housing	Waterproof level IP67, NEMA 4 and 6
Motor power supply	Standard: 220V AC single-phase Optional: 110V AC single-phase, 380/440V AC three-phase, 50/60Hz,±10% 24V DC /110V DC /220V DC"
Motor	Squirrel-cage asynchronous motor
Limit switch	On/off, each of the 1 SPOT, 250V AC 10A
Auxiliary limit switch	On/ off, each of the 1 SPOT, 250V AC 10A
Torque switch	On I off, each of the 1 SPOT, 250V AC 1 OA	QT-010 Excluded
Travel	90°±10°	0°~ 270°Optional
Stall protection/ operating temperature	Built-in overheating protection, open 115ºC ±5ºC/off 97ºC ±5ºC
Indicator	Continuous position indicator scale
Manual operation	Mechanical clutch mechanism, with handwheel operation
Self-locking unit	Worm gear, self-locking provided for the worm mechanism
Mechanical limit	Two external adjusting bolts
Dryer	7-10W (110/220V AC)
Wiring hole	M20*1.5  M36*2
Ambient temperature	-20ºC~+70ºC
Lubrication	Aluminium-base grease (EP type)
Material	Steel/aluminum alloy/aluminum bronze/polycarbonate
Ambient humidity	Maximum 90% RH non-condensing
Seismic performance	X Y Z 10g, 0.2~34 Hz, 30 Minutes
Outer coating	Dry powder/epoxy polyester, with a superior anti-corrosion function

3.3 Optional specification

No.	Optional configuration	Remarks
1	Explosion-proof actuator (Exd II CT4)	QT series
2	Waterproof actuator (IP67,10M,250HR)	QT series
3	Potentiometer (1K-10K)	QT series
4	Proportional control unit (input/output signal 4-20mA DC /1-5V/1-10V)	QT series
5	On-site control unit (local control ON/STOP/OFF selection switch, local/remote switching)	QT series
6	Travel 90°, 120° , 180°, 270°	QT series
7	DC motor (24V DC)	QT series
8	Additional torque switch (SPOT X2 250V AC 10A)	QT-010 Excluded
9	Current position sensor ( output 4-20mA DC )	QT series
10	The electric valve opens or closes the control cabinet automatically after the signal is cut off	QT series
11	High-temperature-resistant actuator (-10ºC ~+100ºC)	QT series
12	Low-temperature-resistant actuator (-40ºC~+70ºC )	QT series
13	Low-speed actuator	QT series

1. Structure

The electric actuator mainly consists of the following parts:
Housing part: including housing and base;
Driving part: powered by a high-performance fully-enclosed squirrel-cage motor;
Transmission mechanism: double worm gear and clutch;
Proportional control part: isolated from the mechanical part to improve reliability;
Torque switch and limit switch part;
Opening detection and feedback part.

1. Installation of actuator

6.1 Installation site
6.1.1 Notes for indoor installation
To install it where there is any explosive gas, you need to order an explosion-proof actuator;
To install it where it may be flooded or outdoors, please notify us in advance;
Please reserve maintenance spaces for wiring, manual operation and others;
6.1.2 Notes for outdoor installation
In order to avoid rain, direct sunlight and other problems, you need to mount a protective cover or select a protection class above IP67;
Please reserve maintenance spaces for wiring, manual operation and others;
6.1.3 Ambient temperature
The ambient temperature range is from -20ºC to + 70ºC;
When the ambient temperature is below 0ºC, please mount a dehumidifying heater in the machine;
6.1.4 Fluid temperature conditions: when it works with a valve, the fluid heat may be transmitted to its body whose temperature may rise; when the fluid is in a high-temperature sate, special treatment should be provided for the bracket connected to the valve.
Standard bracket: bracket for a fluid temperature below +65ºC or without bracket; Medium temperature bracket: bracket for a fluid temperature above + 100ºC and below +180ºC;
High temperature bracket: bracket for a fluid temperature above + 180ºC.
6.2 Connection to the valve
The flange mounting hole size at the actuator bottom is in line with the standard ISOS211. If the valve's installing size is not in line with it, please design a bracket or adapter plate separately.
6.2.2 The actuator is connected to the valve by a removable drive shaft sleeve on it. The drive shaft sleeve is provided as a solid piece, and you should first screw out two fastening screws counterclockwise with a wrench and then eject the driving shaft sleeve with two ejection screws.
Note: The drive shaft sleeve can be designed and manufactured separately by users based on its function requirements, and it can be designed into round, square or other shapes for output (The concentricity of hole and outer circle must be ensured in processing).

Detailed Photos

 

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