Debugging and Testing of Basler BE1-700 Relay

7.2 Verification of Voltage Measurement Accuracy (Acceptance Test)

Apply voltage to phases A, B, and C using a three-phase voltage source (e.g. 100V), and check the secondary voltage reading in the Meter. The error should be within ± 0.5%. Simultaneously check whether the calculated values of V1, V2, and 3V0 conform to theory.

Add fundamental wave and third harmonic separately to the auxiliary Vx input to verify accuracy.

7.3 Over/Under Voltage and Negative Sequence Action Value Test

Overvoltage: Set Pickup=125V with minimum delay (50ms). Slowly increase the voltage until LED/Out2 is closed, record the action value, which should be within 125V ± 2%; Reduce the pressure again and record the return value (which should be 98% ± 1% of the action value).

Undervoltage: Similar, but acting to reduce voltage, the return value should be 102% ± 1% of the action value.

Negative sequence (47): Apply a single-phase power supply between A-N, and since V2=Va/3, if Pickup=42V, the test voltage should act at approximately 126V. Record action values and return values (98% ± 1%).

7.4 Delay Verification

Set Time Delay=2s, apply a step (if overvoltage occurs, jump from normal to 1.2 × Pickup); If the voltage is insufficient, it will jump to 0.8 × Pickup; The frequency jumps to 0.5Hz. Using a timer, the time from applying the signal to closing OUT1 should be within the range of 2s ± 0.5% or ± 2 cycles (whichever is greater). If the delay is extremely small (such as 50ms), the output relay action time needs to be considered.

7.5 inverse time V/Hz (24) test

Set Pickup=2.1 V/Hz (105%), Curve Index=2, Time dial=0.5. Apply the rated frequency of 60Hz and raise the voltage to 132V (110% V/Hz, as 132/60=2.2, 2.2/2.1=1.048, but the actual calculation needs to be based on the formula. Table 40-5 in the manual shows that 110% corresponds to 50s). Measure with a timer, with a deviation of ± 5%.

7.6 Simultaneous testing (25) testing

If both the phase voltage and auxiliary voltage are set to 120V, 60Hz, and in phase, the Sync output should be closed.

Change the amplitude of one side and record the action boundary (which should meet the Voltage Difference setting).

Change the phase angle and record the action boundary (Slip Angle setting).

Change the frequency and record the sliding frequency action boundary.

7.7 Contact input/output and communication verification

Stimulate IN1 with external wet voltage, observe the changes in Meter → Status → Input status, and check the SOE records.

Use the Output Override function to force OUT1 to close, and use a multimeter to confirm the continuity of the contacts.

Test USB and Ethernet (if optional) communication, as well as IRIG-B synchronization.

Fault report and event record analysis

BE1-700 has built-in fault recording (COMTRADE format) and SOE (sequence event recording). The fault trigger is defined by the Fault Trigger logic block (Pickup and Logic inputs). Whenever the protection component Pickup or external trigger signal is valid, pre fault and post fault data are recorded. The fault report includes voltage phasor, frequency, target, fault clearing time, etc. Fault record files can be downloaded through BESTCOMSPlus and analyzed using BESTdata software. SOE records all numerical changes with a time resolution of 1ms and can store up to 255 entries in a loop.

Security and Password Management

Multi level password protection (Read, Control, Operator, Settings, Design, Admin). The default administrator username/password is' A '. User and port access levels can be customized in Device Security Setup. Note: If the Secure Access Level of a certain port is set to None, the port will be disabled. If all ports are set to None, the relay cannot operate and needs to be returned to the factory.

Maintenance and firmware upgrade

BE1-700 is a solid-state digital device that only requires regular inspection of wiring and cleaning on a daily basis. If stored for a long time, power on for 30 minutes every year to maintain the performance of the electrolytic capacitor. The firmware upgrade can be performed through the Upload Device Files function of BESTCOMSPlus. After the upgrade, the settings file needs to be restored (the upgrade will clear the report and restore the default values).