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Air-Conditioner Soft Start Controller RJ-ASSU380P12 Installation Manual
(Three Phase 380VAC)

Introduction:

The RUIJING soft start controller - RJ-ASSU380P12 provides an effective solution in reduction of start-up current, typically up to 70%, but still provides full startup torque for compressors and motors. Across the line starting of air-conditioner compressor or induction motors is accompanied by inrush currents up to 7-8 times higher than running current, and starting torque up to 3 times higher than running torque. The increased unnecessary torque results in sudden mechanical stress on the machine which leads to increased wear and higher service costs and reduced service life. Moreover, the high inrush current and current peaks may stress the power supply system to increased mains and generator loads which may lead to voltage dips results in breaking down of other valuable equipment or system function.

RJ-ASSU380P12 is an embedded design air-conditioner (for single phase power system) soft start controller. It regulates the start-up voltage of the compressor/motor intelligently to effectively reduce the inrush and surge current while starting-up, thus consume much less power from the public utility network or on-site AC power supply system but still provides full startup torque for compressors and motors. RJ-ASSU380P12 effective limits the inrush current and so improves stability of the power supply and reduces transient voltage drops that may affect or break down other loads. This will eliminate the need of over dimension of the power supply system which results in reduce capital expenditure investment in power supply capacity, charge meter, circuit breaker and power wire line capacity etc..and extend the service life of the motor or compressor effectively.

RJ-ASSU380P12 is a compact size, light weight cost effective soft start controller with fire proofed housing and sealed by resin make it capable to resist extreme weather and survive in harsh environment (air-conditioner outdoor unit), this makes RJ-ASSU380P12 a cost effective solution with high reliability and stability.

Features:
Limits inrush current
Eliminates current surges & voltage drops
Extends motor/compressor service life with built-in electronic overload protective relay
Integral bypass contactor reduces heat generation
Produces smoother starts and stops by controlling torque
Reduces vibration and mechanical damage
Relieves shock and drive train stress on startup
Easy to wire and install and decreases equipment downtime
High reliability and long life

Specification:

Electrical:

Applicable compressor power: 380V/12P/3PH ,190V/7HP/3PH (Rated current below 24A)
Operating Voltage Range: 340~460VAC
Control voltage: 220VAC
Rated operational current: 24A
Starting current: ≤80A/2.5S (Rated operating current within 3 times)
Surge current resistance: 250A/20mS
Depletion current: ≤50mA
Dissipation power: <10VA
Soft start time: ≤2.5s
Performance period: 45 thousand hours (within rated operating temperature range)
Number of starts: 100 thousand times (normal environment, the interval is not less than 3 minutes)

Protection:
The insulation resistance between housing and chassis: > 300 M Ω.
Withstand voltage between housing and chassis: >3000 VAC in 1 minute.
Shock resistance better than 200m/s2 and 11ms.
Anti vibration: 10~55mm(double amplitude, 1.5mm)
Protection restart time interval: 180 seconds

Environment:
Working temperature: -40 to 85 ℃.
Working Humidity: 0~95% RH (<40 ℃). 

Mechanical:
Controller housing made by non-flammable plastic
Packaged and sealed by epoxy resin with excellent durable to severe environment
Dimension: 186 mm × 108 mm × 30 mm 
Weight: 660g

Application:
Air-conditioner (apply to every three-phase compressor which the horse power is less than 380V 12HP)