inform ETR EVO Series, Installation And Operating Manual

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ETR EVO UPS User Manual (Ver. 1.0) Page 19
Connections shall be made in the following order;
4.2.1.1. Protective Earth (PE) Connection
Input protective earth connection terminal PE of the UPS shall be connected to ground with a low
impedance connection.
PE terminal of the loads shall be connected to output protective earth terminal of the UPS.
If there is an external battery cabinet present, it shall be grounded via battery protective earth
terminal of the UPS.
4.2.1.2. Input Connection
Please add three-pole (3-pole) circuit breaker (equivalent UPS input breaker) to distribution panel
where UPS is to be connected. Do not connect any other load to this circuit breaker and please do
not forget to add leakage current relay.
Leakage protection relay value must be the total value of 300mA (UPS input leakage current relay)
and total leakage current value of the load connected to UPS. Relay must be protected type against
peak current that can be happened on EMI filter capacitor.
Connect the phase cables to Input L1-L2-L3 terminals, the neutral to Input N terminal. Neutral
connection should be done directly from distributon neutral bus to UPS neutral.
The device shall be earthed for a safe and reliable operation. Connect the PE ground
connectors before connecting any other cable.
If PE cables come along with the power cables; PE cable should be min. 10cm longer
than the
other cables.
The installation and adjustment of distribution panel should be done by authorized
Technical
Personnel.
Switch the circuit breaker on the distribution panel to “0” position before making the
connections.
According to IEC/EN 62040-3, the user should place a warning label on the input
distribution
panel and the other primary power isolators, in order to prevent the risk of voltage
feedback.
The label should carry the following indication: