SERVICE MANUAL
R5888C
QUADRAMHO
Chapter 2
Page 67 of 74
Zone 1 positive sequence Z1
=
(K11 + K12 + K13) K14 x Z
Ph
Ω
Extended Zone 1
Z1X =
Z1 x K15
Ω
Zone 2
Z2
=
(K21 + K22) K24 x Z
Ph
Ω
Zone 3
Z3
=
(K31 + K32) K33 x Z
Ph
Ω
Zone 3 reverse
Z3' =
(K35 + K36) K33 x K37 x Z
Ph
Ω
6.3
Resistive reach setting range (quadrilateral earth fault units only)
The resistive reach in both the forward and reverse direction for Zones 1, 2 and 3
are set by switch K3.
Resistive reach RS = K3
Ω
I
n
6.4
Lenticular aspect ratio setting range (lenticular zone 3 only)
The aspect ratio a/b of the lenticular Zone 3 phase fault and earth fault units and
of the Zone 6 power swing blocking zone is 0.41, 0.67 or 1.00, where b is the
sum of the forward and reverse reach settings and a is the maximum width of the
impedance characteristic measured perpendicular to the characteristic angle.
Aspect ratio 1.00 gives a circular characteristic.
6.5
Summary of K-factors
K1
0 to 4
step 1
K2
0 to 0.8
step 0.2
K3
8, 16, 32, 40, 38
*if fitted)
K4
0 to 5
step 1
K5
0 to 0.9
step 0.1
K6
0. to 0.8
step 0.02
K11
1 to 9
step 1 (and infinity)
K12
0 to 0.9
step 0.1
K13
0 to 0.08
step 0.02
K14
1, 5
K15
1 to 2
step 0.1 and infinity
K21
1 to 9
step 1 (and infinity)
K22
0 to 0.9
step 0.1
K31
1 to 9
step 1
K 32
0 to 0.9
step 0.1
K33
1, 5
a/b
0.41, 0.67, 1.00
(if fitted)
K35
1 to 9
step 1
K36
0 to 0.9
step 0.1
K37
0.25, 0.5, 1.0
The infinity positions of K11, K15 and K21 are used for on-load directional
checks. With the exception of K37 any unused switch positions are at the most
clockwise positions of the switch knob and have the same electrical connection as
the highest setting used.
Summary of Contents for SHPM 101
Page 1: ...Service Manual Quadramho Distance Protection Type SHPM 101...
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Page 13: ...Quadramho Distance Protection Type SHPM 101 Service Manual Chapter 1 Application...
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Page 209: ...Quadramho Distance Protection Type SHPM 101 Service Manual Chapter 3 Electronic Module Housing...
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Page 211: ...Quadramho Distance Protection Type SHPM101 Service Manual Chapter 4 Installation...
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Page 217: ...Quadramho Distance Protection Type SHPM101 Service Manual Chapter 5 Commissioning Instructions...
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Page 285: ...Quadramho Distance Protection Type SHPM 101 Service Manual Chapter 6 Problem Analysis...
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Page 317: ...Quadramho Distance Protection Type SHPM 101 Service Manual Chapter 7 Relay Identification...
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Page 323: ...Quadramho Distance Protection Type SHPM 101 Service Manual Chapter 8 Special Variations...
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