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ABB E2N 20 User Manual

ABB E2N 20
161 pages
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Emax
Installation, service and
maintenance instructions
for low voltage air circuit-breakers
Installation and service
instructions
1SDH000460R0002 L2778

Table of Contents

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ABB E2N 20 Specifications

General IconGeneral
BrandABB
ModelE2N 20
CategoryCircuit breakers
LanguageEnglish

Summary

4. Installation

5. Electrical connections

5.1 Connections to the power circuit

Details on connecting the circuit-breaker to the power circuit.

5.3 Wiring the circuit-breaker auxiliary circuits

6. Putting into service

6.1 General procedures

Steps for initial checks and preparatory operations before service.

7. Instructions for use

7.2 Circuit-breaker closing and opening procedures

7.3 Racking-in/out operation

8. Maintenance

8.1 Warning

Safety precautions and preliminary steps before maintenance.

8.3.2 General inspection of the circuit-breaker

9. Measures to be taken for any operating anomalies

11. Protection releases - General notes

11.1 Safety notes

12. SACE PR121/P Release - Identification

12.2 Specifications

Technical specifications of the PR121/P unit.

12.2.6 Description of the protection functions

12.2.6.1 Protection “L”

Description of the overload protection function with inverse time.

12.2.6.2 Protection “S”

Description of short-circuit protection with adjustable delay.

12.2.6.3 Protection “I”

Description of instantaneous short-circuit protection.

12.2.6.4 Protection “G”

Description of earth fault protection with adjustable delay.

12.4 Putting into service

12.4.1 Connections

Recommendations for making connections according to standards.

12.4.2 CS and TC connection check

Checking current and trip coil connections before service.

12.5 User interface

12.5.3 Changing protection functions

12.6 Operating instructions / Operation in service

12.6.3 Replacing an electronic release

Steps for installing and uninstalling a PR121/P unit.

12.7 Definition of the alarms and signals for the PR121/P unit

12.7.1 Optical signals

Table describing LED indications for different statuses and alarms.

12.7.2 Troubleshooting

13. SACE PR122/P Release - Identification

13.2 Specifications

Technical specifications for the PR122/P unit.

13.2.9 Description of the protection functions

13.2.9.1 Protection “L”

Description of overload protection with inverse time.

13.2.9.2 Protection “S”

Short-circuit protection with fixed or inverse time.

13.2.9.5 Protection “G”

Earth fault protection with fixed or inverse time.

14.3 Putting into service

14.3.3 CS and TC connection test

Checking CS and TC connections before closing CB.

14.3.5 Initial settings

14.3.7 Replacing an electronic release

14.3.7.1 Installation

Procedure for installing a PR123/P unit.

14.4 User interface

14.4.3 Changing parameters

14.5 Operating instructions / Operation in service

14.5.2 Protections Menu

14.5.2.1 Protections Menu table

Table detailing parameters and functions for each protection.

14.5.4 Settings Menu

14.5.5 Test Menu

14.6 Definition of alarms and signals in the PR123/P unit

14.6.1 Optical signals

Detailed description of LED indications for various states.

14.7 Troubleshooting PR123/P unit

14.7.1 In the case of a fault

15.1.5 Operating instructions / Operation in service

15.2 PR120/D-M - COM communication module

15.3 PR120/K signalling module

15.4 PR120/D-BT - WL-COM wireless communication module

16.4 Data logger (recorder)

16.6 Residual current protection function

16.6.1 General

EMAX circuit-breakers with toroid for residual current protection.

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