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Options for SINVERT PVS 600Series inverters
Basic versions and options
The SINVERT PVS 600Series of inverters can be adapted and expanded by means of options in order to meet the individual needs of the plant.
The following 4 options are available:
–PV array grounding
–1 000 V option
–Symmetry monitoring
–Cabinet heating
PV array grounding
In most cases, PV systems constitute a DC IT system. In a DC IT system, neither the positive nor negative pole is grounded.
When using certain module types, however, either a positive or negative grounding of the PV generator is required. It is only by this grounding that damage to modules and a steady loss of power can be prevented, i.e. that the maximum yield can be obtained on a continuous basis.
The "PV array grounding positive pole" option allows functional grounding of the positive conductor inside the SINVERT PVS inverter if this is a requirement of the photovoltaic modules used (e.g. large number of
The "PV array grounding negative pole" option allows functional grounding of the negative conductor inside the SINVERT PVS inverter if this is a requirement of the photovoltaic modules used (e.g. large number of
PV systems no longer constitute a DC IT system when their modules are grounded. For safety reasons, the PV system must be fenced in and designated as an electrical operating area. Only qualified electricians may be granted access.
Grounding an active conductor (positive pole or negative pole) means that the inverter's insulation measuring function no longer works in the normal way. A hazardous current can start to flow as soon as the first insulation damage occurs. For this reason, in the case of positive pole grounding, the current between the positive pole and ground is measured, and in the case of negative pole grounding, the current between the negative pole and ground. When the current increases to a critical level, the ground connection is automatically separated.
1 000 V option
The 1 000 V option increases the maximum permissible input voltage of the SINVERT PVS inverter from 820 to 1 000 V. Provision of this option ensures that the PV plant will enter operation smoothly even with voltages in excess of 820 V which can occur, for example, on cold days or in arrays containing
Symmetry monitoring
The "symmetry monitoring" option measures the normalized currents at the DC inputs internally and
Cabinet heating
The "cabinet heating" option minimizes the risk of conden- sation forming on the
Order numbers for the options
Each of the four options has its own order number which is to be specified in addition to the order number of the basic version (see "Selection and ordering data", page 23).
10SINVERT PVS 600Series central inverters