HT PVCHECK, Руководство пользователя

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PVCHECK 21
6. OPERATING INSTRUCTIONS
6.1. MEASURING EFFICIENCY PV PLANTS BY USING REMOTE UNIT SOLAR-02
For the sake of simplicity, further in this section, the word “string” will be used, although often the
term “photovoltaic field” would be more correct. From the point of view of the instrument, the
management of a single string or of more parallel strings (PV field) is identical. The instrument
PVCHECK (Master) allows measuring the efficiency of PV installations in combination with the
optional remote unit SOLAR-02, which the irradiance and temperature probes are connected to.
This remote unit is capable of communicating with the Master unit (to manage data synchronization
and download) via a radiofrequency (
RF ) connection, which is active up to a maximum distance of
1m between the units.
CAUTION

The maximum voltage between inputs P and N is 1000VDC. Do not measure voltages
exceeding the limits given in this manual. Exceeding these limits could result in
electrical shocks to the user and damage to the instrument.

In order to guarantee the operator
’s safety, while making the connections, disable the
system being measured by means of the switches/breakers upstream and
downstream of the DC/AC converter (inverter)
Fig. 4: Connection of instrument for efficiency measurement on a PV installation
1. Check and, if necessary, set the sensitivity of the reference cell on SOLAR-02 consistently with
the type of PV modules which will be measured (please refer to the user manual of SOLAR-02).
2. We recommend making a preliminary evaluation of the value of irradiation on the surface of the
PV modules being tested by means of unit SOLAR-02 (operating independently) and the
reference cell.
3. Switch on PVCHECK, check and, if necessary, change the instrument settings relevant to the
type of remote unit, to the minimum irradiation threshold, to the full scale of the DC clamp, to
the integration period and to the parameters of the system being measured (see §
5.1.4 , § 5.1.5 ,
§ 0 , § 5.2.1 and § 5.2.2).
4.
In order to guarantee the operator’s safety, disable the system being measured by means of the
switches/breakers upstream and downstream of the DC/AC converter
(inverter).
5. Bring PVCHECK and SOLAR-02 nearer (maximum distance of 1m between them). All
instruments must be switched on (see the User Manual of SOLAR-2 for further details).