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Products You are here: Homepage >> Products >> Electric Actuator >> QT series electric actuator   
  Name: QT quater turn electric actuator
  Product Explanation:
   

QT Series Quarter Turn Electric Actuator
 
     'QT' series electric actuators are designed & engineered for robust, reliable and for high performance duty onto quarter turn valves. The unique reliable motor module, adjustable cam plate limit switch, self locking mechanism, precision gearing system and ball bearings, the auto declutching mechanism, light force load on the hand-wheel, the adaptor drive bushing and bottom ISO 5211 mounting dimension, are added advantages against others in the field of valve automation. 

 

Features

1.  ENCLOSURE
Standard enclosure to water jet proof & water tight proof IP 67 ,  NEMA 4 & 6.
 
2.  MOTOR
Squirrel cage motor is of encapsulated type, on high stall torque and low inherent force for seating & unseating of valves.  All motors are integrated with build-in thermal protection.
 
3.  TERMINAL CONNECTION & WIRING
Terminal connections are of "WAGO" push on type, making wiring connection very easy & without fuss.  Electrical wiring circuit is standardized for single & three phase voltage. Addition termination is available on request.
 
4.  INTERNAL COMPONENTS ARRANGEMENT
Internal mechanical and electrical components are designed in modular mounting arrangement, and can be easily removed for maintenance purposes.  Addition optional accessories are also possible.
 
5.  LIMIT SWITCHES
A pair of limit switches are activated by means of simple, reliable & adjustable cam plates, mounted directly onto, and driven by center column.  The unique cam plate design does not allow over travel of limit switches.
 
6.  TORQUE SWITCHES
Electric actuators on 100 Nm and above, are installed with torque switches for over-load protection.
 
7.  HEATER
For prevention of condensation due to weather & temperature changes, and also keeps internal components clean & dry, a 7-10 watt space heater is provided inside all the electric actuators.
 
8.  SELF LOCKING MECHANISM
Because of the worm gear design system, all the electric actuators are self locking.
 
9.  HANDWHEEL
Correct size of  hand-wheel on the electric actuator ensure adequate strength for safe and efficient emergency operation.
 
10 .MANUAL OVER-RIDE
Engage by pulling the lever & turning the hand- wheel.  Lever is auto declutch when power supply is switched on, and hand-wheel does not turn as extra safety feature.
 
11. VISIUAL POSITION INDICATOR
The visual position indicator is directly mounted onto the center drive column to provide the visual position of the valve.
 
12. END STOPPERS
1 each for open & close position (adjustable), are for over travel protection.
 
13. POTENTIOMETER - optional
Is available on request, is to provide & transmit remote indication of valve position.
 
14. MOUNTING & ADAPTATION

Bottom flange mounting dimension conform to ISO 5211.  A adaptor drive bushing is provided for every electric actuator, is removable and for machining to suite valve stem size. 

Standard Specification

Housing & Cover
Aluminium, Anodized
Enclosure
Watertight IP67, Nema4 and 6
Ambient Temp
-30°C to + 70°C
Power Supply
110/220VAC, 1 Phase 380/440VAC, 3 Phase (60Hz/50Hz)
Control Power:
110/220VAC, 1 Phase, 60/50Hz
Torque Switches
2 x SPDT for QT15 and above
Limit Switches
2 x SPDT 15A
Stall Protection
Built-in Thermal Protection
Travel Angle
90° ± 5°
Indicator
Continuous Position Indicator
Manual Override
HAND/AUTO Declutching Mechanism
Self Locking
Provide by means of Worm Gearing
End Stopper
External Adjustable Screws
Space Heater
7-10W for Anti-Condensation
Conduit Entries
Two G3/4"
Lubrication
MoS2 Lithium Base Grease
Materials
Steel, Aluminium Alloy, AI Bronze
External Coating
Dry Powder, Epoxy-Polyester Munsell No. FJ-002

Optional Items

ALS
Additional 2 x SPDT
Auxiliary Limit Switches
EXT
Travel Angle     120°, 135°, 180°, 270°
LCB
Local Control Box
(1)        Local/Remote Selector Switch
     (2)       Open/Stop/Close Selector Switch
POT
Potentiometer 1k Ohm
CPT
Current Position Transmitter
Output; 4-20mA DC
PCM
Proportional Control Module
Input signal: 4-20mA, 1-5V DC
Output Signal: 4-20mA DC
EXP
Explosion & Water Proof Enclosure
Exd II BT4 IP67
 
QT1~QT4 including QT4X (380V ,3 Phase Motor )
 
Item
Specification
Output Torque
(N.m)
Output Speed
(r/min)
Motor specification
(3 phase ,380V,50Hz)
Operate time for 90 degree turn(S)
Reference weight(Kg)
Reference power (KW)
Rated current(A)
QT1
QT5-1
50
1
0.025
0.45
15
9
QT10-1
100
1
0.025
0.45
15
10
QT2
QT15-1
150
1
0.04
0.9
15
12
QT20-1
200
1
0.04
0.9
15
13
QT3
QT30-0.5
300
0.5
0.06
1
30
17
QT30-1
300
1
0.06
1
15
17
QT50-0.5
500
0.5
0.09
1.2
30
18
QT50-1
500
1
0.09
1.2
15
18
QT4
QT60-0.5
600
0.5
0.2
1.4
30
22
QT60-1
600
1
0.2
1.4
15
22
QT80-0.5
800
0.5
0.2
1.4
30
25
QT80-1
800
1
0.2
1.4
15
25
QT100-0.5
1000
0.5
0.2
1.4
30
25
QT4X
QT200-0.3
2000
0.3
0.2
1.4
45
38
QT250-0.3
2500
0.3
0.2
1.4
45
51
Note: Under rated voltage ,guarantee value of the ratio of motor blocking current to rated current is 7,its tolerance is +20% of the guarantee value.
 
QT1~QT4 including QT4X (220V , Single  Phase Motor )
 
Item
Specification
Output Torque
(N.m)
Output Speed
(r/min)
Motor specification
(3 phase ,380V,50Hz)
Operate time for 90 degree turn(S)
Reference weight(Kg)
Reference power (KW)
Rated current(A)
QT1
QT04-0.9
40
 
0.9
0.025
0.45
 
17.5
6
QT06-0.9
60
0.025
0.45
9
QT09-0.9
90
0.025
0.45
10
QT2
QT15-0.7
150
0.7
 
0.04
0.9
20.6
 
12
QT19-0.7
190
0.04
0.9
13
QT3
QT28-0.6
280
 
0.6
 
0.06
1
 
26.3
 
17
QT38-0.6
380
0.06
1
18
QT50-0.6
500
0.09
1
19
QT4
QT60-0.5
600
 
0.5
 
0.2
1.2
 
29.3
 
22
QT80-0.5
800
0.2
1.4
23
QT100-0.5
1000
0.2
1.4
25
QT4X
QT200-0.2
2000
0.2
0.2
1.4
80
38
QT250-0.2
2500
0.17
0.2
1.4
90
51
 
 
 
Table of appearance & connection dimension

 

 
 
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