Current circuit verification, Ct circuit 1, Ct circuit 2 (optional) – Basler Electric BE1-11m User Manual
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Step 7: Use the Metering Explorer in BESTCOMSPlus to return to the Control, Output Override screen
and click on the Enabled button for Output #1. The button changes to Disabled indicating that
the output control override capability of the relay is disabled.
Step 8: Repeat Steps 3 through 7 for all desired output contacts.
Current Circuit Verification
CT Circuit 1
Step 1: To verify 3I0, I1, and I2, connect an ac current source to Terminals D1 and D2.
Step 2: Apply the appropriate current values in Table 97 to the BE1-11m. Measured 3I0 should
correspond to values in Table 97 while I1 and I2 should be 1/3 the applied value
±1.5% (For
example, if the applied value equals 2 amps, I2 = 2/3 = 0.667 amps
±1.5% or ±0.01 amps.)
Verify current measuring accuracy by opening the Analog Metering, Current, CT Circuit 1,
Secondary Current screen inside the Metering Explorer of BESTCOMSPlus. 3I0, I1, and I2
current measurements can also be verified on the Metering > Analog Metering > Current >
Current Circuit 1 > Secondary Current screen of the front-panel display.
Table 97. Current Circuit Verification Values
Sensing Type
Applied Current
Measured Current
Lower Limit
Upper Limit
5 A
1 amps
0.99 A
1.01 A
5 amps
4.95 A
5.05 A
10 amps
9.90 A
10.10 A
15 amps
14.85 A
15.15 A
20 amps
19.80 A
20.20 A
1 A
0.25 amps
0.2475 A
0.2525 A
1 amps
0.99 A
1.01 A
2 amps
1.98 A
2.02 A
3 amps
2.97 A
3.03 A
4 amps
3.96 A
4.04 A
Step 3: To verify IA1, IB1, IC1, and IG1, connect the four current inputs in series by connecting suitably
sized jumper wires between terminals D2 and D3, D4 and D5, and D6 and D7. Then connect an
ac current source to terminals D1 and D8.
Step 4: Apply the appropriate current values in Table 97 to the BE1-11m. Verify current measuring
accuracy on the Analog Metering, Current, CT Circuit 1, Secondary Current screen inside the
Metering Explorer of BESTCOMSPlus. IA1, IB1, IC1, and IG1 current measurements can also
be verified on the Metering > Analog Metering > Current > Current Circuit 1 > Secondary
Current screen of the front-panel display.
Step 5: Leave current circuit connected and de-energized. These test connections will be used later
when verifying power readings.
CT Circuit 2 (Optional)
Step 1: To verify 3I0, I1, and I2, connect an ac current source to Terminals F1 and F2.
Step 2: Apply the appropriate current values in Table 97 to the BE1-11m. Measured 3I0 should
correspond to values in Table 97 while I1 and I2 should be 1/3 the applied value
±1.5% (For
example, if the applied value equals 2 amps, I2 = 2/3 = 0.667 amps
±1.5% or ±0.01 amps.)
Verify current measuring accuracy by opening the Analog Metering, Current, CT Circuit 2,
Secondary Current screen inside the Metering Explorer of BESTCOMSPlus. 3I0, I1, and I2
BE1-11m
Acceptance Testing