BE1-51/27R - Tests And Adjustments
5-5
NOTE
During this test, disregard any indication on the test setup timer.
Figure 5-6. Test Setup for Sensing Input Type Y or Z (Two-Phase with Neutral Sensing)
Step 6.
Ensure that the relay front panel TARGETS, if present, are reset.
Step 7.
Apply 100% of nominal voltage based on the sensing input type for your relay.
Time Overcurrent Pickup Test
This test will check the minimum and maximum overcurrent pickup points of the time overcurrent element.
Step 1.
Perform the Preliminary Instructions.
Step 2.
Set the front panel TAP selector to A.
Step 3.
Adjust the test set, for an overcurrent threshold having one of the following values:
a) 0.5 A for relays with Sensing Input Range 1, 2, or 4.
b) 1.5 A for relays with Sensing Input Range 3 or 5.
Step 4.
Slowly adjust the front panel TAP CAL control CCW until the front panel TIMING Indicator
illuminates.
RESULT: For the phase minimum overcurrent pickup point of 0.5 A (Step 3a., above) or 1.5 A
(Step 3b., above) the front panel TAP CAL control should be near its maximum CCW limit.
Step 5.
Adjust the front panel TAP CAL control fully CW to allow measurement of the actual overcurrent
pickup point at the A setting of the front panel TAP selector. Note that the front panel TIMING
Indicator will extinguish. Do not disturb this setting.
Содержание BE1-51/27R
Страница 14: ...BE1 51 27R General Information 1 9 Figure 1 1 Style Number Identification Chart...
Страница 36: ...BE1 51 27R General Information 1 31 Figure 1 38 Timing Type E7 BS 142 Extremely Inverse Drawing No 99 1097...
Страница 54: ...2 2 BE1 51 27R Human Machine Interface Controls And Indicators Figure 2 1 Location of Controls and Indicators...
Страница 59: ...3 2 BE1 51 27R Functional Description Figure 3 1 Functional Block Diagram...
Страница 69: ...BE1 51 27R Installation 4 7 Figure 4 8 Typical Internal Diagram Sensing Input Type M or N...
Страница 76: ...4 14 BE1 51 27R Installation Figure 4 14 Relay Signals and Current Pickup Example For 3 Phase Fault XE 0 65 X D...