Electro-Meters: Hsiang Cheng RPW/RPK Transducers


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Hsiang Cheng Corp. ^® Model RPW / RPK, Utility Watt and Var Transducer Series


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Hsiang Cheng RPW and RPK Watt transducers

Product Parameters:

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 Transducers RPK- Var Transducers
Model		Application		Standard Analog Cal.
Watts	Vars	Elements		1A	5A

RPW101	RPK101	1E	1Ø 2W	100 200 400	500 1K 1.5K	120V 240V 415V
RPW200	RPK200	1.5E	3Ø 3W	100 200 400	500 1K 1.5K	120V 240V 415V
RPW201	RPK201	2E	3Ø 3W*	200 400 800	1K 2K 4K	120V 240V 415V
RPW300	RPK300	2.5E	3Ø 4W	100 200 400	500 1K 1.5K	120V 240V 415V
RPW301	RPK301	3E	3Ø 4W*	200 300 600 1.2K	1K 1.5K 3K 6K	69.3V 120V 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

Specifications :

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 sec Voltage 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 688 2KV 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

Downloads:

Downloads: General Specifications

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