Ormazabal cgm.3-2lv User Manual

cgm.3 system
Fully SF6 gas insulated medium
voltage switchgear up to 40.5 kV in
accordance with IEC Standards
General instructions
IG-136-EN, version 10; 23/06/2016

Ormazabal cgm.3-2lv Specifications

General

Rated voltage	Up to 24 kV
Rated current	Up to 630 A
Short-circuit current	Up to 25 kA
Frequency	50/60 Hz
Protection degree	IP67
Dimensions	Varies depending on configuration. Consult manufacturer's documentation.
Weight	Varies depending on configuration. Consult manufacturer's documentation.

Summary

General Description

1.3 Main Components

Overview of the primary parts of the cgm.3 cubicles.

1.4 Characteristics Table

Handling and Transport

2.1 Lifting Means

Describes methods for safely lifting and moving the switchgear units.

Installation

4.1 Unpacking the Equipment

4.3 Minimum Installation Distances

Specifies clearances required around the cubicles for safe installation.

4.4 Recommended Cable Connection Trench

4.5 Fastening to the Floor

Instructions for securing the cubicles to the installation floor.

4.7 Earthing the Switchgear

Procedures for correctly earthing the installed switchgear.

4.8 Cable Connections

Recommended Sequence of Operations

5.1 Checking the Gas Pressure

5.2 Voltage Presence Indicator

How to use and interpret the voltage presence indicators.

5.3 Phase Balance Check

5.4 Feeder Function

Operations related to the feeder function of the switchgear.

5.5 Busbar Switch Function

Operations for the busbar switch function.

5.6 Busbar Switch Function with Earth Connection

Operations for busbar switch with earth connection.

5.7 Busbar Rise Function with Earth Connection

5.8 Fuse Protection Function

5.9 Fuse Replacement Sequence

Step-by-step guide for replacing blown fuses.

5.10 Circuit-Breaker Function with AV / RAV Driving Mechanism

Safety Elements

6.1 Acoustic Earthing Prevention Alarm

6.2 Interlocks

Explains the safety interlocks preventing unsafe operations.

Maintenance

7.1 Voltage Presence Indicator Test

7.2 Acoustic Earthing Prevention Alarm Test