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%(I
2
/I
1
)> Broken Conductor Protection Menu
Broken Conductor Protection is symbolized as
%(I
2
/I
1
)> or I
2
/I
1
> in the IEC Standards, where I
1
describes the positive sequence current and I
2
describes the negative sequence current.
%(I
2
/I
1
)> protection is utilized to intervene the primary
circuit in cases where one or two primary phase
conductors are broken (I = 0 A) but there is no fault
current, or one or two secondary wirings are open
circuit.
The picture shows the Broken Conductor Protection
Menu and the menu comprises 3 parameters.
Protection
Can be set as “Active” or “Passive”, to have the protection into or out of service.
%(I
2
/I
1
)> (Threshold)
Indicates the threshold value for the protection function. The set value range is %(20-100).
t%(I
2
/I
1
)> (Tripping Delay)
Describes the trip delay time once the %(I
2
/I
1
) threshold is broken. Delay type for broken conductor
protection is DMT and can set within the range of (1 – 14,400) s. □
Main Screen » Set » %(I
2
/I
1
)>
Summary of Contents for CPM 310 G
Page 1: ...CPM 310 G Digital Overcurrent Protection Relay User Application Manual vEN 2016 03...
Page 2: ...2...
Page 6: ...6 ABOUT DEMA...
Page 11: ...11 INTRODUCTION...
Page 32: ...32 PACKING LABELING INFORMATION...
Page 34: ...34 OPERATING MANUAL...
Page 53: ...53 RELAY MENUS MANUAL...
Page 55: ...55 The Menu Tree...
Page 56: ...56...
Page 57: ...57...
Page 58: ...58...
Page 59: ...59...
Page 60: ...60...
Page 61: ...61...
Page 128: ...128 DIGICONNECT PC PROGRAM MANUAL...
Page 189: ...189 APPLICATION DIAGRAMS...
Page 191: ...191 Sample Power Transformer Protection Application Diagram...
Page 193: ...193 FUNDAMENTAL CABLING DIAGRAM...
Page 203: ...203 APPLICATION DIAGRAM NO 10 RS485 Cabling...
Page 204: ...204 TECHNICAL DATA...
Page 220: ...220 GLOSSARY...