FUNCTION DESCRIPTION ANSI
IED : Protection of line 1 (PL1) and 2 (PL2)
Differential line 87L
Distance 21 / 21N
Pha overcurrent 50/51
Neutral overcurrent 50 N/51 N
Overvoltage 59
Low voltage 27
Directional overcurrent of phas and neutral 67 / 67N
FUNCTION DESCRIPTION ANSI
IED : Protection of Line 1 (PL1) and 2 (PL2)
Lock fu failure 97
Lock power oscillation 68
Teleprotection / Teleprotection schemes 85
Location and fault monitoring LF
Automatic reclosing 79
Switch fault 50BF
Synchronism verification 25
Broken Conductor
Load detection
Residual compensation factor
Logic of closure failure (SOTF)
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Discrepancy of poles
Trigger logic
Lock for failures of parallel line
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Failure record
Monitoring functions of trigger circuit (74) and trigger blocking (86) that may be implemented by parate devices.
FUNCTION DESCRIPTION ANSI
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IED : Protection of Autotransformer 1 (PAT1) and 2 (PAT2)
Percentage differential of transformer 87T
Pha overcurrent 50/51
Neutral overcurrent 50N/51N
Ground overcurrent 50G/51G
Overexcitation 24
Synchronism verification 25
Switch fault 50BF
Zero quence overvoltage 64
Failure record
Also it will have the following彩泥制作 functions 高中周记300字for control and monitoring of the bay switch: monitoring functions of trigger circuit (74) and trigger blocking (86), which may be implemented by parate devices.
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FUNCTION DESCRIPTION ANSI
