Hsiang Cheng Model LPWWH/LPKKH

Watt hour and Var hour Transducer Series

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Hsiang Cheng FPW and FPK Watt transducers

Product Parameters:
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Input Option Option Option Output
Voltage 75 – 150 V 150 – 300 V 300 – 600 V 0-1 mA 0-20 mA 4-20 mA
Current 0 – 1.5 A 0 – 7.5 A 0-15A 0-1 V 0-5 V 0-10 V
Hz 48 – 52 Hz 58 – 62 Hz 2-10 V Specified
Aux. Pwr. 120 ± 15% 240 ± 15% Internal Power
uni-direction X1 / X31 pulse / wh or varh X2 / X410 pulse / wh or varh X1, X2, Y1, Y2:open collector type X3, X4, Y3, Y4: reed relay type
Bi-direction Y1 / Y31 pulse / wh or varh Y2 / Y410 pulse / wh or varh
• Customer specifired ranges available•Specified Auxillary Power (DC24 / 48 / 125 V ± 20%)
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LPWWH – Watt Hour TransducersLPKKH- Var Hour Transducers
Model Application calibration vs output span( Watt / Var ) = D
Watts Vars Elements V1 = 120 V V2 = 240 V V3 = 480 V
1A 5A 10A 1A 5A 10A 1A 5A 10A
LPWWH101 LPKKH101 1 1Ø 2W 100 500 1k 200 1k 2k 400 2k 4k
LPWWH111 LPKKH111 1.5 1Ø 3W* 200 1k 2k 400 2k 4k 800 4k 8k
LPWWH201 LPKKH201 2 3Ø 3W* 200 1k 2k 400 2k 4k 800 4k 8k
LPWWH211 LPKKH211 2.5 3Ø 4W* 300 1.5k 3k 600 3k 6k 1.2k 6k 12k
LPWWH301 LPKKH301 3 3Ø 4W* 300 1.5k 3k 600 3k 6k 1.2k 6k 12k
Notes
  • Standard output calibrationbipolar 0 to ± 1mA for 0 to ± D Watts or Vars 4-12-20mA for -D to 0 to +D Watts or Vars
  • External power mode suitably for all output typesInternal power mode, only suitably for 0-1mA / 0-20mA / 0-1V / 0-5V / 0-10V output
*Unbalanced
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Specifications :
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General Specifications
Accuracy ( 23±3°C ) 0.07% reading / PF ± 0.03% RO
Maximum output load DC current mode : maximum 10V dropDC voltage mode : maximum 5mA drive
Output of WH & VarH: Open collecter type, maximum 30V / 30mA
Dielectric strength AC 2KV 1 minute between terminals; AC 2.6KV 1 minute / terminals to case
Surge and impulse test ANSI C37.90 / 1989, IEEE-587, 1983
Maximum input over:
Current related input Voltage related input
1A / 5A4 x rated / continuous 10 x rated / 10 seconds 50 x rated / 1 second 80 x rated / 0.5 second 10A2 x rated / continuous 25 x rated / 1 second 50 x rated / 0.5 second 1.5 x rated / continuous2 x rated / 10 seconds
Input burden Current less 0.2 VA; voltage less 0.1 VA
Response time & ripple ≤400 ms for step change 0-99% ripple less 0.5% ro peak to peak
Frequency 50 ± 2 Hz; 60 ± 2 Hz; 400 ± 5 Hz ( Watt only )
Waveform Watt – 2% 3rd, Var – sinusoidal
Stability
Temperature range ( 20 to 26°C ) long term stability / year
Maximum 60 ppm / °C less 0.2% draft / year typically ……. WattsMaximum 70 ppm / °C less 0.2% draft / year typically ……. Vars
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 < 0.01% under 100 ampere turns at 1M center
Power dissipation < 7 VA
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