Hsiang Cheng Model SPA / SPAX

Utility AC Voltage Transducer Series

space

Hsiang Cheng SPA and SPAX AC Currnet transducers

Characteristics :
  • Self Powered Mode
  • Standard output of 0-1 mADC
  • Base accuracy of 0.25% +0.02% ro of reading
  • Dual Isolated outputs Watt/Var eliminating gorund effects
  • High magnetic field immunity
  • Meets IEEE SWC Test
space
Model Type Description
LPA Voltage 1 unit of avg. to rms conversion
LPAX Voltage 3 unit of avg. to rms conversion
space
Specifications :
space
General Specifications
Accuracy ( 23±3°C ): 0.25% RD + 0.02%RO / 23 + 3° C
Effective voltage: 85-150V; current 0-6A
Range : Standard DC 0 to + 1mADC 0 to +1mA calibration vs 0 to 5A
Dielectric strength : 4KV AC rms 1 minute between input / output / power / case IEC688
Over capability : 15A continuous 50A … 10sec / hour; 250A … 1sec / hour; 400A … 0.5sec / hour
Burden : < 2VA at 5A input
Frequency : 50 – 70Hz
Surge and impulse test ANSI C37.90 / 1989, IEEE 587 / 1983, IEC255-3, 6KV (1.2 * 50 us), 3KA (8 * 20 us) ….. current onlySurge Test (ring wave) : IEEE 587 / 1983 (3KV – 0.5 us / 100 KHz), IEC255-3 (2.5KV – 0.25ms / 1MHz)
Waveform: Watt – Fundamental with 20% 3rd harmonicsVar – Sinusoidual
Output ( isolated with input ) :
Output load : Maximum 10Kohm for 0 to +1 mA ouput
Output Impedance > 30 Mega ohm
Response time < 400 ms from 0 to 99% RO at operatingRipple < 0.5% P-P RO
Stability
Temperature stability < 0.01% per degree C, from 0 to 55°C
Long term stability< 0.1% RO per year ( typically )
Storage condition Temperature range -20 to 70°C, RH 20 to 95% non condensed
Operating condition Temperature range -5 to 60 °C, RH 0 to 99% non condensed
Magnetic field effect < 0.04% at center 400 A-T / M
Power dissipation: < 2VA
space
pdf_pic Downloads: General Specifications
base
weblink
index