EKO MP-170, Operation Manual

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sensors, thermocouple and so on all the way to the measuring unit. For having the
above features, it is possible to take a cable-less measurement, which only the Sensor
unit is setup by the PV module/array in the same angle and direction, and the Main unit
is away from the connection point for the PV module/array. The long cable connection
is unnecessary, and makes the measurement easy.
- By connecting the Main unit and the Sensor unit with communication cable after the
measurement, the same time frame data can be downloaded from the Sensor unit and
reflect to the I-V curve data by each measurement.
- It is possible to take measurements as monitoring the irradiance and temperature on
the real-time by connecting the Main unit and the Sensor unit with modular cable. The
power for the Sensor unit is supplied from the Main unit only when the AC adopter on
the Main unit is used.
- MP-170 has STC conversion function for the JIS C8914.
- When measuring the PV array, there are setup function for the row and column count of
the array; if the module parameters of one module, there is no need for calculating the
PV parameters as long as the array has the same model modules, and the array
parameters is calculated automatically and possible to figure out the standard
condition.
- The automatic measurement is possible up to 1 day by setting up the start and end
measurement time and the interval.
- When one-day worth of data is measured with automatic measurement, each of the
following can be graphed: the irradiance vs. Pmax, irradiance vs. Voc, irradiance vs.
Isc.
- di/dV-V characteristics, which is the first differential of I-V curve, can be indicated above
the LCD on the Main unit; this is useful for diagnosis of PV module/array failure.
- I-V curve graph can be shown in x2, x4, and x8 zoom above the LCD on the Main unit
and be able to check the fine warps on the I-V curve, which is useful for diagnosis of PV
module/array failure.
- MP-170 is designed with assumption for wide range of measurement as the concept.
As the result, it is possible to measure wide range such as voltage: 10V ~ 1000V,
current: 1A~20A, power: 10W~10kW. (The minimum voltage is 10V and the minimum
current is 1A; the measurement lower than these values cannot be measured. Even if
measurement was possible, the measured values cannot be assured.)
- MP-170 measures I-V curve of PV module / array by capacitive load method.
- The Sensor Unit can measure solar irradiance, reference cell output, temperature on the
backside of PV module/array and outside temperature.
- The Main unit and Sensor Unit communicate with RS-485. Both online and offline
operation can be chosen while measuring. The data can be transferred from the Sensor
unit to the Main unit after the measurement.
- MP-170 is equipped with a shoulder strap for convenient.