Application Guide for Basler BE1-BPR Circuit Breaker Protection Relay

5.5 COMTRADE fault recording

The enhanced BE1-BPR supports COMTRADE format waveform recording according to IEEE C37.111-1991 standard. Each record contains 4 cycles of pre fault data and 16 cycles of post fault data, with a sampling rate of 12 points per cycle. It also records three-phase and neutral line current analog quantities and 32 digital quantities (input/output/alarm status). Up to 12 records can be stored and downloaded to a PC for analysis via serial port using FLOG and FLT commands.

Installation and wiring points

6.1 Physical Installation

BE1-BPR is compatible with multiple standard chassis openings:

19 inch rack installation (Figure 16)

Vertical panel installation (Figure 18-20), compatible with Basler M1, GE M1, Westinghouse FT31/FT32 chassis

Optional decorative panel (Basler part number 9272013100) covering the opening

6.2 Terminal Wiring

AC current input (TB1:1~8):

Terminal 1-2: Phase A, Terminal 3-4: Phase B, Terminal 5-6: Phase C, Terminal 7-8: Neutral wire

DC control circuit (TB1: 9~26):

Terminal 9-10: Power input (48/125V or 125/250V depending on model)

Terminal 15-26: 7-way contact induction input (IN1~IN7, external wet voltage must be within the power supply voltage range)

Terminal 3-14: OUT1~OUT5 and ALM output

Contact induced voltage selection jumper (JP 200~JP 2006, Figure 25):

48/125V nominal: 1-2 pin jumper (26~38V start) or 2-3 pin jumper (69~100V start)

125/250V nominal: 1-2 pin jumper (69~100V start) or 2-3 pin jumper (138~200V start)

RS-232 serial port: Front panel COM0 (DB-9 female head, DCE）， Rear COM1A (DB-9 female head, DCE）， The protocol defaults to 9600 8N1 at the factory.

RS-485 port: Rear terminal block (A/B/G), supports polling multi machine communication (hardware/software handshake needs to be disabled).

IRIG-B input: Terminal block (+/-), accepts demodulated DC level shift signal (≥ 4.5V is high level), achieving ± 1ms clock synchronization accuracy.

6.3 Grounding and Dielectric Testing

The relay housing needs to be connected to the ground with a copper wire of not less than 12AWG. Dielectric testing can be performed according to IEC 255-5/ANSI IEEE C37.90-1989: apply 1500Vac/2121Vdc between circuits and to ground for 1 minute. Please note that all output terminals and power terminals are equipped with MOV surge suppressors, and the test voltage should not exceed 300V.

Calibration and on-site testing process

7.1 A/D calibration (serial port mode)

Three phase+neutral line current input in series, connected to AC current source, relay powered on

Serial port connection, ACCESS=password for programming access

FREQ=60 (or 50) Set the system frequency

Low range calibration: 5A CT applied 10A, input CAL1=10; 1A CT applies 2A, input CAL1=2

High range calibration (enhanced only): 5A CT applied 40A, input CAL2=40; 1A CT applies 8A, input CAL2=8

SAVE； Y saves calibration data

7.2 HMI calibration method

Select low range calibration on the 4th sub screen of the maintenance menu, apply the corresponding current, and then press ▶ Press the key to start calibration, display "WORKING" and finally display "CAL OK". High range calibration is a similar operation. After completion, long press the PROG button to save.

7.3 Operational Verification Testing

Select target logic scheme (LOGIC command)

Enter CT ratio (CT command), startup value (PU command), timer delay (TD command)

Configure circuit breaker status (BKROPS), resistance monitoring (BKRRES), contact wear (BKRCON/DLOG)

Simulate fault conditions using current sources and contact inputs to verify logical correctness

Use the SHOWSET command to record the final settings, and the VER command to record version information for archiving

7.4 Output Contact Test

The OUT command can be used to test the output contact action (requires Area 1 or Area 4 password):

OUT=ENABLE Enable test mode

OUT1=1, close OUT1 for 200-250ms

OUT=Disable Test Mode

Common troubleshooting guide

Troubleshooting direction

If the POWER LED is not on, check if the voltage at power terminals 9-10 is within the nominal range; Check the voltage level corresponding to the model (48/125V or 125/250V)

CLOCK LED lights up. Set the current time and date through TIME/DATE command or HMI maintenance menu; If using IRIG-B, check the signal source

Check if the starting value of PU1~PU3 is lower than the normal operating current when the 50PU LED is constantly on; Confirm whether the CT transformation ratio (CTP/CTN) is correct; Distinguish the differences in filtering characteristics between Type1/Type2/Type3

ALARM LED lights up. Use the DIAG command to check the specific alarm source (RAM/ROM/EEPROM/ADC/power/timer, etc.); Non shielded alarm needs to be returned to the factory

The TARGET LED is on but there is no output action to confirm that the PTARGET command has been correctly programmed to output the target latch; The target information can be viewed through the TARGET command

Check the external wiring and wet voltage of BFI input (IN3~IN7) when the circuit breaker fails to operate; Confirm whether the set values of timers TD1/TD2 are too short/too long; Verify the startup value of F1/F2 fault detector

The START/RESET/WAIT/LOCKOUT logic for checking the LR command configuration for reclosing sequence anomalies; Confirm the delay settings for TD791~TD793; Verify the logical polarity of contact points 5a/52 b