Sustained exposure to high humidity during storage may cause damage to electronics and reduce the lifetime of the equipment.

We recommend that storage humidity shall not exceed 50% relative humidity.

Once the MiCOM products have been unpacked, we recommend that they are energized within the three following months.

Where electrical equipment is being installed, sufficient time should be allowed for acclimatization to the ambient temperature of the environment, before energization.

Only qualified personnel, familiar with the “Warning” page at the beginning of this manual, may work on or operate this device.

The instructions given in the Chapter “Protective and Operational Grounding” (“Protective and Operational Grounding”) should be noted. In particular, check that the protective ground connection is secured with a tooth lock washer, as per the diagram “Installing the protective grounding conductor terminal” (Fig. 5-8).

If a cable screen is added to this connection or removed from it, then the protective grounding should be checked again.

The SC connector and RJ45 wire of the Ethernet module cannot be connected at the same time.

Installation of the detachable HMI: A protective conductor (protective earth) with a cross section at least 1.5 mm² (US: AWG14 or thicker) must be connected to the protective grounding conductor terminal on the detachable HMI at one end and on the other end to the protective grounding conductor terminal on the device’s case. Both the detachable HMI and the device have to be installed in the same substation.

In order to prevent personal injuries the communications cable installed to the detachable HMI must never come in contact with parts that may be subjected to dangerous live voltages.

It is prohibited to install or run the communications cable to the detachable HMI next to high-voltage lines or high-voltage connections. This is to prevent induced currents that would lead to electromagnetic interferences.