ABB UniGear ZS1

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4.1

12.2

Figure 147 View of inside circuit-breaker compartment, withdrawable part removed, circuit-breakers open.

4.1 Isolating contact

5 Isolating tulip

12.2 Bottom circuit-breaker

Main Page

Table of Contents4
General5
Standards and Specifications5
Operating Conditions5
Normal Operating Conditions5
Special Operating Conditions5
Technical Data6
Electrical Data6
Main Parameters for Panels with Circuit-Breakers6
Main Parameters for Panels with NALF Switch-Disconnector6
Resistance to Internal Arc Faults6
Dimensions and Weights7
Dimensions and Weights of 12/17,5 Kv Units7
Dimensions and Weights of 24 Kv Units8
Dimensions and Weights of Panels with the NALF 12/17,5 Kv Switch-Disconnectors8
Dimensions and Weights of Panels with the NALF 24 Kv Switch-Disconnectors8
Panel Design and Equipment9
Basic Structure and Variants9
Enclosure and Partitioning9
Ventilation of the Panels10
Compartments in the Panels11
Busbar Compartment11
Circuit-Breaker Compartment11
Withdrawable Parts13
Cable Connection Compartment14
Control Cabinet15
Switch-Disconnector and Cable Compartment in the Panel with Switch-Disconnector15
Interlock/Protection against Erroneous Operation16
Panel Internal Interlocking16
Door Interlocking16
Interlocks between Panels16
Locking Devices16
Internal Interlocking of Panel with Switch-Disconnector19
Circuit Breaker and Contactor Plug Connector Coding19
Fast Recovery Device21
Ith Limiters22
Dispatch and Storage23
Condition on Delivery23
Packing23
Transport23
Delivery24
Intermediate Storage24
Handling24
Switchgear24
Apparatus26
Assembly of the Switchgear on Site29
General Site Requirements29
Foundations29
Method of Installation a - Installation of the Base Irons30
Method of Installation B - Fixing with Anchoring Bolts to Concrete Floor30
Method of Installation C - Fixing to a Raised False33
Assembly of the Switchgear Panels38
Installation of the Bushing41
Bushing of 12/17,5 Kv Panels41
Bushing of 24 Kv Panels41
Fixing of the Panels42
Installation of the Busbars44
Preparation of the Material44
Busbar Compartment Access46
Busbar Installation46
Installation of the Top-Mounted Boxes51
Voltage Transformers for Busbar Metering51
Earthing Switch for Busbar Earthing54
Pressure Relief Ducts56
Standard Gas Duct57
Compact Gas Duct60
Compact Gas Duct with Top Chimneys61
Cable Connection62
Power Cables62
Control Cables63
Earthing the Switchgear68
Laying the Ring Circuits68
Final Erection Work68
Operation of the Switchgear69
Commissioning69
Preparatory Work69
Start-Up71
Switching Operations71
Withdrawable Apparatus71
Circuit-Breaker - Type VD4 and Vmax75
Circuit-Breaker - Type VM176
Circuit-Breaker - Type HD477
Vacuum Contactor - Type V-Contact78
Withdrawable Metering Parts79
Earthing Switch - Type EK6 and ST-VG-0179
Busbar Earthing Switch80
Earthing and Short-Circuiting with Earthing Module80
NALF Type Switch-Disconnector82
Test Procedure84
Testing the Off-Circuit Condition84
Current and Voltage Tests84
Service Trucks85
Earthing Truck Without Making Capacity85
Earthing Truck with Making Capacity85
Power Cable Test Truck85
Isolation Truck85
Maintenance86
General86
Intervals for Inspection, Servicing and Repairs86
Inspection87
Servicing87
Maintenance in Busbar Compartment88
Maintenance in Cable Compartment89
Maintenance in Circuit Breaker Compartment93
Maintenance in the Low Voltage Compartment94
Repairs95
Switchgear in General95
Replacement of Complex Functional Groups97
Testing Withdrawable Parts99
Motor-Driven Withdrawable Parts99
Checking Correctness of Dimensional Settings99
Checking Auxiliary Switch Setting on Withdrawable Parts99
Checking the Direction of Rotation of the Travel Motors on Motor-Driven Withdrawable Parts99
Testing Interlock Condition100
Tests on the Panel102
Auxiliary Switch Settings on the Earthing Switch102
Spare Parts, Auxiliary Materials and Lubricants102
Spare Parts102
Auxiliary Materials, Lubrificants102
Operating Accessories103
Product Quality and Environmental Protection104

ABB UniGear ZS1 - Page 96

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