5-8
BE1-50/51B-214/-215/-223/-225 Testing
9252000994 Rev N
Step 5. Decrease input current until INST output contacts open.
Perform preliminary setup:
Time Dial Test
•
Connect test setup as shown in Figure 5-1.
•
Insure that SW3 switches are set: SW3-1 for the operating frequency, SW3-2 to OFF, SW3-3 to
ON, and SW3-4 ON.
•
Set TIME DIAL to 4.5.
•
Set CURVE to S
•
Set TIME PICKUP to 0.2.
•
Set INST PICKUP to 18.0.
Step 1. Prepare to apply 0.3 amperes input current to terminals 5 and 6 and record the elapsed time from
when current is applied until TIME output contacts close.
Step 2. Apply the current (step from 0 to 0.3 amperes) and record the elapsed time. Elapsed time should
be 0.345 to 0.424 seconds. (This tolerance is greater than ±2% because it is the accumulation
of both pickup and timing tolerances.)
Step 3. Remove input current.
Perform preliminary setup:
Target Test
•
Connect test setup as shown in Figure 5-2.
•
Insure that SW3 switches are set: SW3-1 for the operating frequency, SW3-2 to OFF, SW3-3 to
ON, and SW3-4 ON.
•
Set TIME DIAL to 4.5.
•
Set CURVE to S
•
Set TIME PICKUP to 0.2.
•
Set INST PICKUP to 19.8.
Step 1. Set voltage source to provide a target current of 1.0 ampere.
Step 2. Apply 1 ampere input current to terminals 5 and 6. Check that the TIME target operates.
Step 3. Remove input current and reset target.
Step 4. Set TIME PICKUP to 3.18 and set INST PICKUP to 0.2.
Step 5. Set voltage source to provide a target current of 1.0 ampere.
Step 6. Apply 1 ampere input current to terminals 5 and 6. Check that the INST target operates.
Step 7. Remove input current and reset target.
Perform preliminary setup:
Manual Trip Test
•
Connect test setup as shown in Figure 5-2.
•
Insure that SW3 switches are set: SW3-1 for the operating frequency, SW3-2 to OFF, SW3-3 to
ON, and SW3-4 ON.
•
Set TIME DIAL to 4.5.
•
Set CURVE to S
•
Set TIME PICKUP to 0.2.
•
Set INST PICKUP to 0.2.
Step 1. Set voltage source to provide a target current of 1.0 ampere.
WARNING!
Trip circuit voltage is present at the front panel test points. When shorting the test
points, use insulated jumpers to avoid contact with these voltages.
Summary of Contents for BE1-50/51B-214
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