Hsiang Cheng Corp. ®

Model RPWK Utility Watt/Var Transducer Series

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Hsiang Cheng RPW and RPK Watt transducers

Product Parameters:

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Input Option Option Option Option Output
Voltage 45~86 85~150 180~300 300~500 0-1 mA 0-20 mA 4-20 mA
Current 0 – 1.2 A 0 – 6 A 4~12~20 mA 0~10 mA 0~1 V
Hz 48 – 52 Hz 58 – 62 Hz 0~5 V 0~10 V 2~10 V
Aux. Pwr. 120V 240V AC 415V / Internal powered * 1~5 V 1~3~5 V
*DC powered- on request
RPW – Watt TransducersRPK- Var Transducers
Model Application Standard Analog Cal.
Watts / Vars Elements 1A 5A
RPWK200 3Ø 3W 100200400 5001K1.5K 120V240V415V
RPWK201 3Ø 3W* 200400800 1K2K4K 120V240V415V
RPWK300 3Ø 4W 100200400 5001K1.5K 120V240V415V
RPWK301 3Ø 4W* 2003006001.2K 1K1.5K3K6K 69.3V120V240V415V
Notes
  • Note :Voltage input : Phase voltage for 3 phase 4 wire (Vp)Line to line voltage for 3 phase 3 wire (VL)
  • Note :1. uni. = uni-direction = 0 to +span bi = bi-direction = -span to 0 to +spanExample : 4-20mA = 0 to +1000W 4-12-20mA = -1000W to 0 to +1000W2. For uni-directional transducers, watts for forward power and vars for lagging power 3. For internal powered type … zero based outputs and Vn operation range 85%~115%
*Unbalanced
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Specifications :

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General Specifications
Accuracy ( 23±3°C ) 0.2% RO
Maximum output load Current related input : 2 x rated continuous, 10 x rated 10 sec, 25 x rated 2 sec, 50 x rated 1 secVoltage related input : maximum 2 x rated continuous ( 120V / 240V ), maximum 1.5 x rated continuous ( 415V )
Dielectric strength 4KV AC rms 1 minute between terminals to case IEC 6882KV AC rms 1 minute between input / output / power IEC 688
Maximum input Current related input : 2 x rated continuous, 10 x rated 10 sec, 25 x rated 2 sec, 50 x rated 1 secVoltage related input : maximum 2 x rated continuous ( 120V / 240V ), maximum 1.5 x rated continuous ( 415V )
Impulse / SWC IEC 255-4, 5KV 1.2x50us, IEC255-22-1, 2.5KV ( 1MHz / 400Hz )
Input burden Current 0.3VA typically; voltage 0.2VA typically
Response time & ripple < 400ms for step change 0-95%, ripple less 0.5% ro peak-peak
Frequency 50± 2Hz, 60 ±2Hz
Aux. power effect < 0.005% for per voltage change
Stability
Temperature range ( 20 to 26°C ) long term stability / year
Maximum 100ppm/ , less 0.2% drift per year typically
Storage condition Temperature range -25 to 70°C, RH 20 to 95% non condensed
Operating condition Temperature range -20 to 65°C, RH 0 to 99% non condensed
Magnetic field effect < 0.05% change 1M center 100 amper-turn, synchronized with line frequency
Enclosure code Case IP 50 / terminals IP 30, complies with IEC 529, BS 5490 DIN 40050
Power supply AC 120V / 240V 15%, 50 / 60Hz
Power dissipation < 3.5 VA
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pdf_pic Downloads: General Specifications
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