AC connection
Warning
This product is a safety class I product (supplied with a ground terminal for safety purposes). Its AC input and/or output terminals and/or grounding point on the outside of the product must be provided with an uninterruptible grounding point for safety purposes.
The Multi is provided with a ground relay, see the Internal wiring diagram chapter, that automatically connects the Neutral output to the chassis if no external AC supply is available. If an external AC supply is provided, the ground relay H will open before the input safety relay closes. This ensures the correct operation of an earth leakage circuit breaker that is connected to the output.
In a fixed installation, uninterruptable grounding can be secured by means of the grounding wire of the AC input. Otherwise, the casing must be grounded.
In a mobile installation, interrupting the shore connection will simultaneously disconnect the grounding connection. In that case, the casing must be connected to the chassis (of the vehicle) or to the hull or grounding plate (of the boat).
In the case of a boat, direct connection to the shore ground is not recommended because of potential galvanic corrosion. The solution to this is using an isolation transformer.
The AC input and output terminal connectors can be found at the bottom of the Multi, see the Connection overview chapter. The shore or mains cable must be connected to the connector with a three-wire cable. Use a three-wire cable with a flexible core and a cross-section of at least 1.5 mm²
The inverter does incorporate a mains frequency isolating transformer. This precludes the possibility of DC current at any AC port. Therefore, type A RCDs can be used.
Proceed as follows to connect the AC cables:
The AC output cable can be connected directly to the male connector (the connector pulls out).
The terminal points are indicated clearly. From left to right: neutral (N), earth (PE), and phase (L1).
The AC input cable can be connected directly to the female connector (the connector pulls out).
The terminal points are indicated clearly. From left to right: neutral (N), earth (PE), and phase (L1).
Push the “input” connector into the AC-in connector.
Push the “output” connector into the AC-out connector.