Fans current limiting relay , 40A Phase Failure Protection Relay Integrative Structure
♦ Features
-- Integrative structure
-- Three-phase monitoring of overload, phase loss, phase unbalance
-- Powered by the measuring circuit
-- 1 NC SCR output contact
-- 4 LEDs for status indication
♦ Protective Functions
-- Overload
-- Phase loss
-- Phase unbalance
♦ Typical Applications
• Pumps • Fans
• Blowers • Motors
• Compressors
♦ Approvals
• CE • CCC
Normal operating conditions and installation conditions
1 , the ambient temperature: -10 °C ~ +50 °C.
2 , relative humidity: ≤ 90%.
3 , atmospheric pressure: 80Kpa ~ 110Kpa.
4 , altitude: not more than 2000 meters.
5 , the grid frequency: 45 ~ 60Hz.
6 , working voltage: 24 ~ 380VAC.
7 , the output interface load capacity: 1A/380VAC.
8 , installation size: in line with JR16 thermal relay standards.
9 , installation location: Any type of installation of type II.
10 . Surrounding environment: Equipment that is resistant to sunlight, rain, snow, wind, sand;
There is a medium with explosion hazard. The air does not contain gases that cause metal corrosion, insulation damage, and conduction.
Medium; No more severe molds and strong vibrations and shocks are allowed.
Instructions for use and safety precautions
1 . According to the graphical operation, the AC contactor to the three-phase power line of the motor passes through the three perforations of the protector, and the phase sequence is arbitrary. The terminal of the protector is connected in series to the secondary circuit of the AC contactor. .
2 . First, turn the current regulator knob of the protector clockwise to the position of the maximum scale value. After checking the wiring is correct, start the motor and make it in normal operation. At the same time, the three-phase green luminous tube of the protector is on. The overload red indicator light is not Light, then turn the current adjustment knob slowly counter-clockwise until the overload indicator lights up. At this time, the protector is in the critical state of overload protection. Slowly turn back clockwise until the overload indicator just goes out, then the protector's The scale value of the current adjustment knob is the current value of the motor overload protection.
♦ Technical data
| Type | JDB-1 |
| Current range | 2.5-5A,4-10A,8-20A,16-40A,32-80A,
63-160A,150-300A |
| Startup delay | 5s,10s,20s |
| Protective functions | overload,phase loss,phase unbalance |
| Setting method | by knob |
| Indicators | ABC overload&phase loss |
| Output contacts | 1NC(SCR output) |
| Contact capacity | 1A 380VAC |
| Operating voltage of control loop | AC220V or AC380V |
| Dimensions(H*W*D) | 2.5-40A:38*90*63mm
80-300A:44.5*123*67mm |
| Mounting | screw fixing |
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Fans current limiting relay , 40A Phase Failure Protection Relay Integrative Structure Images
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