3-2 L90 Line Current Differential System GE Multilin3.1 DESCRIPTION 3 HARDWARE3 Figure 3–2: L90 HORIZONTAL MOUNTING (ENHANCED PANEL)Figure 3–3: L90 HORIZONTAL MOUNTING AND DIMENSIONS (STANDARD PANEL)b) VERTICAL UNITSThe L90 Line Current Differential System is available as a reduced size (¾) vertical mount unit, with a removable faceplate.The faceplate can be specified as either standard or enhanced at the time of ordering. The enhanced faceplate containsadditional user-programmable pushbuttons and LED indicators.The modular design allows the relay to be easily upgraded or repaired by a qualified service person. The faceplate ishinged to allow easy access to the removable modules, and is itself removable to allow mounting on doors with limited reardepth. There is also a removable dust cover that fits over the faceplate, which must be removed when attempting to accessthe keypad or RS232 communications port.The case dimensions are shown below, along with panel cutout details for panel mounting. When planning the location ofyour panel cutout, ensure that provision is made for the faceplate to swing open without interference to or from adjacentequipment.18.370”[466,60 mm]842808A1.CDR0.280”[7,11 mm]Typ. x 44.000”[101,60 mm]17.750”[450,85 mm]CUT-OUT
