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Check Your Solar Power Levels and Verify Integrity to Solve Power Loss Problems
Hioki Memory HiLoggers are high-speed data loggers for recording multiple chanels of voltage, current, temperature or humidity signals, providing complete isolation between channels and strong noise resistance. The LR8400-9X Series take logging to a new level by meeting applications in solar power measurement.
PV Power Verifier LR8400-92 (200A AC/DC Sensor and other bundled accessories)
PV Power Verifier LR8400-93 (2000A AC/DC Sensor and other bundled accessories)
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 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. |