ABB UniSec - User Manual

Medium voltage products
UniSec
Installation manual
Safety 3
For your safety! 3
Skilled personnel 3
Crucial information 3
Contact us! 3
1. Introduction 4
1.1 General aspects 4
1.2 Installation manual 4
2. Product information 5
2.1 Unit dimensions 5
2.2 Weights 6
3. Transport and storage 7
3.1 Condition on delivery 7
3.2 Unpacking at installation site 7
3.3 Handling the units as far as the installation site 8
3.4 Temporary storage 10
3.5 Delivery responsibilities 10
4. Assembly of the switchgear on site 11
4.1 General warnings and cautions 11
4.2 Preparations 11
4.3 Dimensional foundation drawings 11
4.4 Foundations 15
4.5 Installation procedure for units 15
4.6 Gas vent ducts 26
4.7 Coupling the units with switch-disconnector
to WBC-WBS units 29
4.8 Coupling the units with switch-disconnector
to WBC unit 24 kV 30
5. Cable connections 31
5.1 Installing the cables 31
5.2 Control cables 37
5.3 Earthing the switchgear 37
5.4 Final installation work 38
A. Tightening torques for steel screws and nuts/bolts 39
B. Tools required for installation 42

ABB UniSec Specifications

General

Rated voltage	Up to 24 kV
Mechanical life	Up to 10, 000 operations
Insulation medium	SF6
Type	Metal-enclosed switchgear
Application	Medium voltage distribution
Operating mechanism	motor-driven

Summary

Safety

For your safety!

Essential safety rules for installation, operation, and maintenance of switchgear.

Skilled personnel

Emphasizes that installation and maintenance must be performed by qualified and knowledgeable personnel.

Crucial information

Explains hazard symbols (Danger, Warning, Caution, Note) and their implications.

2. Product information

3. Transport and storage

3.1 Condition on delivery

3.3 Handling the units as far as the installation site

Includes safety warnings, handling methods, and lifting procedures for units.

4. Assembly of the switchgear on site

4.1 General warnings and cautions

Highlights the importance of ABB binding data and using trained, skilled personnel.

4.2 Preparations

Steps for preparing the installation room and site before commencing assembly.

4.5 Installation procedure for units

5. Cable connections

5.1 Installing the cables

Detailed process for installing medium voltage cables, including parts and operations.

5.3 Earthing the switchgear

5.4 Final installation work

A. Tightening torques for steel screws and nuts;bolts