Electrical Connection - Ingeteam Ingecon Sun Power Series Installation Manual

Ingeteam Power Technology, S.A.
1. The transformer's power should be suitable for the loads connected to it. Take into account the environ-
mental conditions of the site.
2. The power winding must withstand pulsating voltage components with dU/dt of 500 V/uS. Because of
inverter operation, the voltage between a phase and ground can reach 3/2 of the open circuit voltage of the PV
array. See section 5.5.
3. Delta connection is advised in the power part and star connection in auxiliary loads. We advise connecting
the neutral of auxiliary loads to ground.
Insulation monitor
For installations that so require, the installer will connect an IT network insulation monitor.
The insulation monitor should withstand and be able to measure 1000 VDC networks.
The unit's insulation monitor controls the IT network when the unit is powered up.

5.4. Electrical connection

Once the unit has been mounted in its final position and has been solidly secured, make the electrical connections
to it.
Care must be taken to ensure the equipment is not live when accessing its interior.
The front door of the cabinet is arranged so that it can only be opened when the AC thermomagnetic
circuit breaker, the DC circuit breaker and any auxiliary external supplies are disabled.
When checking that there is no voltage, wearing dielectric gloves and safety goggles approved for electrical hazards
is required.
While the door is open, do not alter the position of the thermomagnetic or CD circuit breaker, do not
operate the controls on the door nor apply force to the internal electrical devices which they control.
They must also be in the OFF position for the door to be able to be closed.
After setting the AC thermomagnetic circuit breaker, the DC circuit breaker and any auxiliary external
supplies to OFF, wait at least 10 minutes before opening the door. Internal capacitances may still
hold hazardous voltages.
During inspection and handling work:
Take care, since even with the AC thermomagnetic and the DC circuit breaker on OFF, cables directly
connected to the grid or panels may still hold hazardous voltages. This includes feed plates and wires
between switches/breakers.
As long as the panels are exposed to the light, the DC cables will carry potentially dangerous voltage
levels.
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Installation manual
AAS2000IKI01