Schweitzer Engineering SEL-351P - Table 6: Recloser Curve Designations; Table 7: US, IEC, and User-Programmable Curve Designations

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SEL-351P Quick-Start Installation and User's Guide (Portuguese) 35
Table 6: Recloser Curve Designations
Recloser Curve Cross Reference – Old to New
Old New Old New Old New
A 101 P 115 7 152
B 117 R 105 8 113
C 133 T 161 8PLUS 111
D 116 V 137 9 131
E 132 W 138 KG 165
F 163 Y 120 11 141
G 121 Z 134 13 142
H 122 1 102 14 119
J 164 2 135 15 112
KP 162 3 140 16 139
L 107 4 106 17 103
M 118 5 114 18 151
N 104 6 136
Table 7: US, IEC, and User-Programmable Curve Designations
US Curve Description
U1 moderately inverse
U2 inverse
U3 very inverse
U4 extremely inverse
U5 short-time inverse
IEC Curve Description
C1 class A (standard inverse)
C2 class B (very inverse)
C3 class C (extremely inverse)
C4 long-time inverse
C5 short-time inverse
User-Programmable
Curves (factory-set) Description
DEF_01 definite-time curve (0.1 seconds)
DEF_05 definite-time curve (0.5 seconds)
DEF_1 definite-time curve (1.0 seconds)
DEF_5 definite-time curve (5.0 seconds)
The four (4) user-programmable curves are factory-set as shown in Table
7, with definite-time characteristics. User-designed curves (created with
the SEL-5804 TOC [Time-Overcurrent] Recloser Curve Designer
software package) can be downloaded instead to any of the four user-
programmable curves in the SEL-351P.
Curves Conform to Standard:
The US and IEC curves
conform to IEEE C37.112-1996
IEEE Standard Inverse-Time
Characteristic Equations for
Overcurrent Relays.
All 38 Traditional
Recloser Curves
are Available!
User Designed Curves:
Created with SEL-5804
software.
• 3.5” high-density disk
• Requires Windows 3.1 or
later