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General| Brand | ABB |
|---|---|
| Model | E2N 12 |
| Category | Circuit breakers |
| Language | English |
Details the information found on the circuit-breaker's rating plate, including electrical specifications.
Important safety precautions to follow during storage, including environmental and handling guidelines.
Details on connecting the circuit-breaker to the main power circuit via terminals and busbars.
Instructions for connecting the earth terminals on both fixed and withdrawable circuit-breakers.
General checks and procedures before putting the circuit-breaker into service, including connection tightness and voltage checks.
Step-by-step instructions for manual and electrical closing and opening operations.
Detailed procedure for racking the circuit-breaker in and out of its fixed part, including safety precautions.
Safety warnings and preliminary procedures to be followed before performing any maintenance work.
Inspection checklist for operating mechanism, contacts, arcing chambers, and connections, including problem identification.
Procedure for checking and adjusting contact wear and gap, with specific steps for different Emax series.
Table listing possible causes and remedies for operating anomalies, linked to specific circuit-breaker states and LED indications.
General safety warnings regarding the use and handling of the device, emphasizing qualified personnel and safe usage conditions.
Details the five independent protection functions, including RMS calculation and watchdog.
Detailed description of each protection function (L, S, I, G, Iinst), including their curves and thermal memory.
Steps for putting the PR121/P into service, including connections, tests, and initial settings.
Details optical signals (LEDs) and their meanings for status indication and alarms.
Table of typical service conditions, possible causes, and suggested solutions for faults and malfunctions.
Detailed description of protection functions (L, S, G, U, OT, UV, OV, RV, RP, UF, OF) and their settings.
Steps for putting the PR123/P into service, including connections, tests, and initial settings.
Details optical signals (LEDs) and error messages for status indication and troubleshooting.
Table of typical service conditions, possible causes, and suggested solutions for faults.
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