GEK-98846A
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2. APPLICATION
In its three versions (MLP1000, MLP2000, MLP3000 and MLP4000) the MLP is a
distance relay whose application range is in sub-transmission and distribution lines, in
power levels of up to 66 kV and exceptionally up to 132 kV in lines with 3 phase trip.
The MLP 1000 is the basic model of distance protection. It's main purpose is to
replace directional overcurrent relays, in cases where the overcurrent relay on its own (the
reach varies depending on the installed network voltage) has difficulties obtaining a good
selection level with another network protections under any operation condition.
The MLP2000 model includes an additional programmable recloser of up to three
reclosing attempts. This additional service lends an advantage over the MLP1000 as
instead of using it only as a directional line relay it can also be used with relatively long
lines where it is necessary to reinstall the service automatically.
The MLP3000 is the most sophisticated of the three models and includes a remote
open detector, a fuse failure detector, and a fault locator. In additionally it contains an
OSCILLOPERTURGRAFIC function and the possibility to be used with accelerated trip
schemes in zone 2 (through carrier communications or other procedures to perform a
logical trip). These advantages, make it very appropriate even in transportation networks
in isolated systems and with voltages of up to 132 kV. It can be used in emergency
situations with higher voltages, due to the fact that it is a relay with dedicated functions,
but factors such as trip speed and other incorporated back-up functions might make other
relay models such as the DLP, TLS and PLS more appropriate for these voltages.
The MLP4000 includes, in addition to the features of the MLP 1000, the
oscilloperturgrafic function.
Summary of Contents for MLP1000
Page 94: ...GEK 98846A 93 Figure 1 System diagram with MLP CPR and TTI ...
Page 95: ...GEK 98846A 94 Figure 2 Case dimensions and drilling form 1 rack ...
Page 96: ...GEK 98846A 95 Figure 3 1 External Connections MLP1000 ...
Page 97: ...GEK 98846A 96 Figure 3 2 External Connections MLP1000 ...
Page 99: ...GEK 98846A 98 Figure 3 4 External Connections MLP1000 ...
Page 100: ...GEK 98846A 99 Figure 3 5 External Connections MLP2000 ...
Page 101: ...GEK 98846A 100 Figure 3 6 External Connections MLP2000 ...
Page 103: ...GEK 98846A 102 Figure 3 8 External Connections MLP2000 ...
Page 104: ...GEK 98846A 103 Figure 3 9 External Connections MLP3000 ...
Page 105: ...GEK 98846A 104 Figure 3 10 External Connections MLP3000 ...
Page 107: ...GEK 98846A 106 Figure 3 12 External Connections MLP3000 ...
Page 108: ...GEK 98846A 107 Figure 4 Protection Logic ...
Page 109: ...GEK 98846A 108 Figure 5 1 Trip decision diagram ...
Page 110: ...GEK 98846A 109 Figure 5 2 Trip decision diagram ...
Page 111: ...GEK 98846A 110 Figure 5 3 Trip decision diagram ...
Page 112: ...GEK 98846A 111 Figure 5 4 Trip decision diagram ...
Page 113: ...GEK 98846A 112 Figure 6 1 Z1X protection scheme ...
Page 114: ...GEK 98846A 113 Figure6 2 ACCZ2 Protection scheme ...
Page 115: ...GEK 98846A 114 Figure7 LPU function diagram ...
Page 116: ...GEK 98846A 115 Figure 8 1 ROD function logic ...
Page 117: ...GEK 98846A 116 Figure 8 2 ROD function diagram ...
Page 118: ...GEK 98846A 117 Figure 9 1 DD function logic ...
Page 119: ...GEK 98846A 118 Figure 9 2 DD function diagram ...
Page 120: ...GEK 98846A 119 Figure 10 1 FF function logic ...
Page 121: ...GEK 98846A 120 Figure 10 2 FF function diagram ...
Page 122: ...GEK 98846A 121 Figure 11 1 Recloser diagram ...
Page 123: ...GEK 98846A 122 Figure 11 2 Recloser Diagram ...
Page 124: ...GEK 98846A 123 Figure 11 3 Recloser Diagram ...
Page 125: ...GEK 98846A 124 Figure 12 Fault selector ...
Page 126: ...GEK 98846A 125 Figure 13 Menu Tree Diagram ...
Page 127: ...GEK 98846A 126 Figure 14 MLP3000 Settings and data ...
Page 128: ...GEK 98846A 127 Figure 15 Connection scheme for relay tests ...
Page 129: ...GEK 98846A 128 Figure 16 Power swing diagram function ...
Page 130: ...GEK 98846A 129 Figure 17 Mho Reactance characteristics of the MLP ...
