SERVICE MANUAL R5888B
QUADRAMHO Chapter 5
Appendix A
Page 2 of 18
Code selection
switch number Scheme Type of tripping
00 Basic 1Ph and 3Ph
01 Basic 3Ph only
02 Permissive underreach 1Ph and 3Ph
03 Permissive underreach 3Ph only
04 Permissive overreach 1Ph and 3Ph
05 Permissive overreach 3Ph only
06 Blocking 1Ph and 3Ph
07 Blocking 3Ph only
08 Zone 1 extension 1Ph and 3Ph
09 Zone 1 extension 3Ph only
Switch number Left hand function Right hand function
SW9 Power swing detection Power swing detection
disabled enabled
SW8 Disable weak infeed option Enable weak infeed option
schemes 04 and 05 only
SW7 Disable weak infeed trip Enable weak infeed trip if
weak infeed option selected
SW6 Normal A/R action Block A/R if CIS not
energised for schemes 02 to
07 inclusive
SW5 Disable comparator self- Enable comparator self-
checking checking
SW4 Normal A/R checking Block A/R for 3Ph Z1/AT
faults
SW3 VTS indication only VTS indication and block
SW2 SOTF dead time 110s SOTF dead time 200ms
SW1 SOTF for any comparator SOTF for current and no
operation volts on any phase
Figure 2: Scheme options available and option switches
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