Hsiang Cheng Model RPW/RPK

Utility Watt and 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
RPW101 RPK101 1E 1Ø 2W 100200 400 5001K 1.5K 120V240V 415V
RPW200 RPK200 1.5E 3Ø 3W 100200 400 5001K 1.5K 120V240V 415V
RPW201 RPK201 2E 3Ø 3W* 200400 800 1K2K 4K 120V240V 415V
RPW300 RPK300 2.5E 3Ø 4W 100200 400 5001K 1.5K 120V240V 415V
RPW301 RPK301 3E 3Ø 4W* 200300 600 1.2K 1K1.5K 3K 6K 69.3V120V 240V 415V
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 +span Example : 4-20mA = 0 to +1000W 4-12-20mA = -1000W to 0 to +1000W 2. 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
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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