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BE1-50/51M - Testing 5-5

CAUTION

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.

Manual Trip Test

Perform preliminary setup:

Connect test setup as shown in Figure 5-2.

Insure that SW3 switches are set correctly: SW3-1 for operating frequency, SW3-2 to OFF (no

instantaneous delay), SW3-3 to OFF (no instantaneous delay (100 series relays) or ABB type curves

selected (200 series relays) ), and SW3-4 to OFF (selects instantaneous reset).

Set TIME DIAL to 4.5.

Set CURVE to S

Set TIME PICKUP to 1.0.

Set INST PICKUP to 01.

Step 1. Set target current source to 1.0 ampere, ac.

Step 2. Apply 0.9 ampere input current to terminals 8 and 9.

Step 3. Connect a jumper between TIME MANUAL TRIP test points. Check that TIME target operates.

Step 4. Connect a jumper between INST MANUAL TRIP test points. Check that INST target operates.

Step 5. Reset targets.

Integrating Reset Test (Applicable Only To 200 Series Relays)

Perform preliminary setup:

Connect test setup as shown in Figure 5-1.

Insure that SW3 switches are set correctly: SW3-1 for operating frequency, SW3-2 to OFF (no

instantaneous delay), SW3-3 to OFF (no instantaneous delay (100 series relays) or ABB type curves

selected (200 series relays) ), and

SW3-4 to ON

(selects integrating reset).

Set TIME DIAL to 4.5.

Set CURVE to I.

Set TIME PICKUP to 1.0.

Set INST PICKUP to 90.

Step 1. Set target current source to 1.0 ampere, ac.

Step 2. Read all of Step 3 before beginning Step 3.

Step 3. Apply 4.0 amperes input current to terminals 8 and 9. After the unit trips, remove the input current for

20 ±0.25 seconds, then reapply the 4.0 amperes input current. Record the elapsed time from the

reapplication of input current to the output retrip.

Result:

Elapsed time should be 1.55 ±0.3 seconds.

Courtesy of NationalSwitchgear.com

Basler BE1-50/51M-209 Series User Manual

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