Hioki-LR8400-92 Solar Power Virifier
Hioki-LR8400-92  Solar Power Virifier

Hioki-LR8400-92 Solar Power Virifier

Leverandør: Hioki E.E. Corporation
Varenummer: Hioki-LR8400-92
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Verify the Correct Power Level to Solve Power Loss Problems
 
  • Estimate expected electricity production (estimated electrical energy)
  • Estimate the expected electricity production at the current time under continuously varying conditions of air temperature and insolation
  • Compare the estimate with actual electricity production
  • Production can be measured without shutting off the circuit
  • Measure the production trend
  • Investigate module failures by identifying strings with wiring breaks and using the instrument in conjunction with a masking shield
  • Add up to 7 more channels of clamp or temperature measurements even in PV mode
  • When PV mode is turned OFF, the instrument can also be used as a 30-channel data logger
  • When PV mode is turned OFF, optional input units can be added to expand the instrument to a maximum of 60 channels
 
 
 
PV mode Basic specifications (Accuracy guaranteed for 1 year)
 
Input
(Fixed channels)
(Automatic setting of conversion ratio)
[unit1-ch1] Voltage measurement mode, 1 V f.s., 1,000 V conversion ratio
[unit1-ch2] Current measurement mode, 1 V f.s., 1,000 A conversion ratio
[unit1-ch3] Insolation measurement mode, 20 mV f.s., 140 kW/m2 conversion ratio
[unit1-ch4] Panel temperature measurement mode, K thermocouple 100°C f.s., 1°C conversion ratio
Expansion channel settings [unit1-ch5] to [unit1-ch11] Select and add as voltage, thermocouple, or clamp (2,000 A, 200 A, 100 A, 20 A, 10 A).
*[unit1-ch12] to [unit1-ch15] and [unit2-ch1] to [unit2-ch15] cannot be used in PV mode.
Equations
(Fixed channels)
(Automatic setting of equation)
[W1] Power (kW) = Voltage (Ch. 1-1) × current (Ch. 1-2)
[W2] Power integration (kWh) = Voltage (Ch. 1-1) × current (Ch. 1-2) × measurement time (h)
[W3] Estimated power (kW) = Insolation strength (Ch. 1-3) / Gs (standard test condition of 1 kW/m2) × (1 + temperature loss*1) × (1 - coefficient for other losses) × photovoltaic cell rated output (kW)
[W4] Estimated integration (kWh) = Insolation strength (Ch. 1-3) / Gs (standard test condition of 1 kW/m2) × (1 + temperature loss*1) × (1 - coefficient for other losses) × photovoltaic cell rated output (kW) × measurement time (h) *1 Temperature loss = Photovoltaic cell maximum output temperature coefficient × (panel temperature (Ch. 1-4) - 25) / 100
[W5] AC estimated power (kW) = Estimated power (w3) × power conditioner conversion efficiency (reference value)
[W6] AC estimated integration (kWh) = Estimated energy (w4) × power conditioner conversion efficiency (reference value)
[W7] Estimated power approximation rate (%) = Energy (w2) / estimated energy (w4)
Display PV Wave + Value, PV Wave + Crsr, Gauge + PV Wave, PV Value, Estimate Power, AC Estimate (reference values)
Other specifications Functionality is identical to that of the LR8400-20 when PV mode is OFF.
 
 
 
Applications
 
Investigate expected electricity production
(estimated electrical energy)
Compare actual electricity production with the expected electricity production (estimated electricity production).
Investigate and identify failed strings
Investigate line failures by switching the string being measured.