Areva MiCOM P441, Technical Manual

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P44x/EN AP/E33 Application Notes
Page 12/220 MiCOM P441/P442 & P444
Menu text Default setting Available settings
Internal A/R Disabled Enabled or Disabled
Input Labels Visible Invisible or Visible
Output Labels Visible Invisible or Visible
CT & VT Ratios Visible Invisible or Visible
Event Recorder Invisible Invisible or Visible
Disturb Recorder Invisible Invisible or Visible
Measure’t Setup Invisible Invisible or Visible
Comms Settings Visible Invisible or Visible
Commission Tests Visible Invisible or Visible
Setting Values Primary Primary or Secondary
(*) from B1.0
The aim of the Configuration column is to allow general configuration of the relay from a
single point in the menu. Any of the functions that are disabled or made invisible from this
column do not then appear within the main relay menu.
2.2 Phase fault distance protection
The P441, P442 and P444 relays have 5 zones of phase fault protection, as shown in the
impedance plot Figure 1 below.
ZONE 3
ZONE 4
ZONE 2
ZONE 1X
ZONE 1
ZONE P
R1Ph/2 R2Ph/2 RpPh/2 R3Ph/2 = R4Ph/2
P0470ENa
X ( /phase)
R ( /phase)
FIGURE 1 – PHASE/PHASE FAULT QUADRILATERAL CHARACTERISTICS ( /PHASE SCHEME)
Remarks: 1. R limit value in MiCOM S1, are in ohms loop.
2. In a
Ω
/phase scheme the R value must be divided by 2 (for
phase/phase diagram).
3. The angle of the start element (Quad) is the angle of the
positive impedance of the line (value adjusted in the settings)