GE Power Management LPS-O Line Protection System 5-
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5 FUNCTIONAL TESTS (FACTORY SETTINGS) 5.1 MEASURING UNIT TESTS
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5 FUNCTIONAL TESTS (FACTORY SETTINGS) 5.1 MEASURING UNIT TESTS 5.1.1 DESCRIPTION
a) MEASURING UNIT TESTS
• T1 – FD Fault Detector
• T2 – IT Trip Supervision Test
• T3 – IB Blocking Supervision Test
• T4 – Ground Directional Trip Test
• T5 – Ground Directional Block Test
• T6 – Phase Instantaneous Overcurrent
• T7 – Ground Instantaneous Overcurrent
• T8 – Ground Time Overcurrent Test
• T9 – Undervoltage Test
• T10 – Overvoltage Test
b) ZONE PHASE REACH & TIMERS TESTS
• T11 – Zone1 Phase Reach without Transformer Compensation
• T12 – Zone2 Phase Reach without Transformer Compensation
• T13 – Zone3 Phase Reach without Transformer Compensation
• T14 – Zone4 Phase Reach without Transformer Compensation
• T15 – Three Phase Fault with Transformer Compensation
• T16 – Phase (Zone Backup) Timer Tests
c) OUT OF STEP TESTS
• T17 – Out of Step Block Test
• T18 – Out of Step Trip Tests
Refer to Section 4.1: OVERVIEW on page 4–1 for generic test instructions pertaining to the test equipment,
equipment grounding, required settings and settings changes, general instructions, entering and exiting test
mode, using communications, and PC software setup.
CAUTION: Contact A1 will chatter when the unit under test is near the threshold.
Do not
allow this to continue!
Remove the test current. A single contact closure is enough to deter-
mine that the unit picked up.
CAUTION: Before starting to test the LPS-O relay, download all the relay settings to your PC
using the LPSO-Link program
NOTE: Where appropriate, current levels are defined with two numbers as
xx
(
yy
);
xx
is the value to be
used for relays rated at 5 Amperes and (
yy
) is the value to be used for 1 Ampere rated relays.
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