7 Acceptance/Protection Function Test Guide
7-4
L-PRO 4000 User Manual
D02706R02.30
7.3 L-PRO Acceptance Test Procedure Outline
Devices to Test
• 60 AC Loss of Potential
• 21P Phase-to-Phase Impedance
• 21N Phase-to-Neutral Impedance
• Load Encroachment
• Weak Infeed
• Switch On To Fault
• 68 Power Swing
• 27 Undervoltage
• 59 Overvoltage
• 50N/51N Neutral Overcurrent
• 50/51 Phase Overcurrent
• 46-50/46-51 Negative Sequence Overcurrent
• 50LS Low Set Definite Time Overcurrent
• 50BF Breaker Fail
• Example of Inputs 3 and 4 being used for Breaker Fail
• 81 Over/Under/Rate of Change of Frequency
• 25C Sync Check
• 79 Recloser
• 79-1-3 single pole trip device number
Summary of Contents for L-PRO 4000
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