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BE1-50/51M - Testing 5-7

Time Dial Test

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 OFF (selects instantaneous reset).

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 ampere input current to terminals 8 and 9 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 ampere) and record the elapsed time. Elapsed time should be

1.754 to 2.084 seconds. (This tolerance is greater than ±2 % because it is the accumulation of both

pickup and timing tolerances.)

Step 3. Remove input current.

Target 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 0.2.

Set INST PICKUP to 0.2.

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

Step 2. Apply 1 ampere input current to terminals 8 and 9. Check that both TIME and INST targets operate.

Step 3. Remove input current and reset targets.

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 0.2.

Set INST PICKUP to 0.2

Courtesy of NationalSwitchgear.com

Basler BE1-50/51M-100 Series User Manual

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