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General| Current Rating | 5 A |
|---|---|
| Frequency | 50/60 Hz |
| Voltage Rating | 50-500V AC |
| Mounting | Panel |
| Contacts | Double throw |
| Rated Voltage | 50-500V AC |
Details the instruction manual for Basler Electric BE1-50/51B-218 and BE1-50/51B-228 overcurrent relays.
Provides a high-level overview of the manual's sections and content.
Highlights critical safety precautions and operational notes for relay handling and installation.
Chronological summary of changes made to the instruction manual across various revisions.
Details the purpose, key features, and benefits of the BE1-50/51B series overcurrent relays.
Specifies current sensing input capabilities and parameters for the Time Overcurrent (51) element.
Lists constants for various time characteristic curves and their corresponding figure references.
Explains the integrating reset feature and its equation for electromechanical relay simulation.
Details specifications for the Instantaneous Overcurrent (50) element, including pickup and dropout.
Illustrates the device's burden characteristics in relation to input current.
Describes the relay's performance regarding frequency, transient, and harmonic response.
Details target indicator operation, output contact ratings, and results of type tests performed.
Covers operating environment, RFI susceptibility, vibration, shock, and agency recognition.
Identifies and explains the function of front panel controls and indicators shown in Figure 2-1.
Provides detailed descriptions of controls and the functionality of internal switch SW3.
Explains the sensing input, power supply, signal processing, and microprocessor operation.
Describes power-off sensing capabilities and the behavior of output contacts.
Provides outline dimensions and panel drilling layouts for different mounting styles.
Details default switch settings and an example of application coordination with a timing diagram.
Illustrates typical AC input and DC control connections with diagrams.
Outlines recommended maintenance practices and storage conditions for the relay.
Covers dielectric testing, operational test procedures, required equipment, and test setups.
Step-by-step testing procedures for the 5-ampere sensing input model.
Step-by-step testing procedures for the 1-ampere sensing input model.
Instructions for setting the relay and performing periodic functional checks.
Introduces the appendix and explains the purpose of the time characteristic curve figures.
Illustrates time characteristic curves (Figures A-1 to A-9) for ABB CO-type equivalents.
Illustrates time characteristic curves (Figures A-10 to A-14) for GE IAC-type equivalents.
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