Display - Arc protection - Bay control and measurement - Merging unit - Transformer protection - 2 winding - Feeder protection - Voltage regulation - Capacitor bank protection - Grid automation - Busbar differential protection (high impedance) - Line differential protection - Back-up protection - Motor protection - Busbar protection (voltage and frequency) - Interconnection protection - Generator protection - Power management/Load shedding - Operation Manual - REX615 Protection and control - PCL2 - IEC - ANSI - 01.04.2026

REX615 Operation Manual

The LHMI includes a graphical display that supports two character sizes. The character size depends on the selected language. The amount of characters and rows fitting the view depends on the character size.

Table 1. Display
Character size5 Rows in the view Characters per row
Small, mono-spaced (6 × 12 pixels) 10 20
Large, variable width (13 × 14 pixels) 7 8 or more

The display view is divided into four basic areas.

Figure 1. Display layout
1234
1
Header
2
Icon
3
Content
4
Scroll bar (displayed when needed)
  • The header area at the top of the display view shows the current location in the menu structure
  • The icon area at the upper right corner of the display shows the first character of username logged in LHMI when local override is set to False, otherwise logged in username first character is not shown

    Current action is indicated by the following characters:

    • S: Parameters are being stored
    • !: Warning and/or indication
  • The content area shows the menu content.
  • If the menu contains more rows than the display can show at a time, a scroll bar is displayed on the right.

The display is updated either cyclically or based on changes in the source data such as parameters or events.