Basler BE1-32R/32O/U Direction Power Relay Setting and Testing Guide

Increase the current, and the power should be at the return value (approximately 105% of the starting value) when the light goes out.

5.4 Time Delay Verification

Time limit (over power): Set the delay to "01" and the multiplier to x0.1, apply a step current of twice the set value, measure the time from current application to output contact action, which should be 0.1s ± 0.05s. Try again for "50" and "99" corresponding to 5.0s and 9.9s (tolerance ± 5%).

Fixed time limit (under power): Similar, but the starting signal is "current cutoff" (i.e. power drops suddenly from above the set point to below the set point), and a timer is used to measure the time from cutoff to contact action.

Inverse time limit (over power): Set the curve number (e.g. 05), apply different multiples of current (1.5 times, 4 times, 8 times), and verify the action time against the standard curve (e.g. about 0.46s ± 0.05s at 4 times).

Common fault phenomena and troubleshooting ideas

Possible causes and solutions for the fault phenomenon

The over power indicator light is not on, but the actual power far exceeds the set value. The polarity of the CT wiring is reversed, causing the power direction to be reversed; Or if the sensing type and wiring method do not match (such as Type B misconnected as Type A), use a phase meter to check the angle between current and voltage and confirm the power direction; Reconnect according to the internal wiring diagram (Figures 4-17~4-20)

Under power misoperation, especially when the load fluctuates slightly, the under power setting value is too high (close to normal load), or the delay is too short. Reduce the under power percentage (such as from 95% to 80%) and increase the delay (such as 5-10 seconds)

The contact output does not work, but the indicator light is on. The output contact is burnt or the intermediate relay coil is short circuited, resulting in insufficient contact capacity (DC inductive load requires a continuous current diode). Use a multimeter to check the output terminals (1-10 for over power, 2-10 for under power) for continuity; Confirm that the load current is within the rated range (DC<1A, AC<7.5A)

The target indicator does not light up or is lost after power loss. For electronic latch type targets, the state preservation after power loss depends on internal capacitors. If it is not powered on for a long time, it may fail; The current type target requires a circuit current of ≥ 200mA to trigger the target reset operation, which can be verified using the test button; If still ineffective, check the auxiliary power supply for power supply

The test button cannot be pressed, and a non-conductive rod (such as an insulated plastic rod) needs to be inserted into the front panel hole. It is not allowed to use metal objects and specialized insulation tools

Maintenance and storage precautions

Regular testing: It is recommended to perform a complete startup value, return coefficient, and delay verification every 1-2 years, and record the data for comparison with the factory values.

Grounding requirements: The relay housing must be directly grounded with a copper wire of not less than 12AWG, and cannot be connected in series with other equipment to ensure anti-interference ability and safety.

Storage and maintenance: There is an electrolytic capacitor inside. If it is stored as a spare for a long time, it should be powered on for 30 minutes every year to maintain the performance of the capacitor and prevent leakage or capacity loss.

Repair notice: The circuit board cannot be replaced on site. If an internal fault occurs, the entire machine should be returned to the factory for repair (contact Basler technical support to obtain a repair number). Spare parts can be pre prepared with "drawer units" of the same model for easy and quick replacement.

Typical replacement scenarios and selection alternatives

When using electromechanical directional power relays from GE, Westinghouse, or ABB on site, when replacing them with BE1-32 series, attention should be paid to:

Confirm the original CT/PT ratio and polarity, and adjust it to the range of the relay.

Electromechanical relays usually have a fixed delay, while BE1-32 provides flexible adjustment that needs to be readjusted according to the protection coordination curve.

If the original relay includes additional functions such as undervoltage and overvoltage, corresponding relays need to be configured separately, as BE1-32 only focuses on power.

In addition, if the on-site power factor is often lower than 0.10 (such as during no-load transformer charging), the relay is not suitable and Basler's specialized low power factor products should be used instead.