Name: GE GL 310 F3/4031 P/VR
Brand: GE
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INSTALLATION

42 OI 248 (EN) REV6 /REV5

6.13 Earthing (Grounding) the Circuit Breaker

The base frame and supports are equipped with earth connections

(ground connections). Pole columns and operating mechanisms

are conductively connected via their mounting points to the base

frame and earthed or grounded through it (the earthing surfaces

are shown in the dimensioned drawing).

• Earth (ground) the base frame and supports.

Table of Contents3
Introduction7
Safety11
Safety Instructions11
Handling Sulfur Hexafluoride13
Safety Precautions When Handling SF613
Oxygen Displacement13
Mechanical Handling13
Frostbite14
Safety Precautions When Handling Used SF615
Transport at the Installation Site16
Components Supplied17
Scope of Supply (Standard)17
Scope of Supply (Optional)18
Transport and Storage19
Transport and Handling19
Storage20
Installation21
Preparing for Installation21
Documentation21
Checklist21
Materials and Equipment to be Provided by Customer24
Use of Auxiliary Materials and Supplies24
Unpacking the Transport Units24
Base Frame and Operating Mechanisms24
Pole Column25
Unpacking Pole Column with Composite Insulators26
Unpacking Pole Column with Porcelain Insulators27
Preinstalling the Supports30
Installing the Base Frame and Operating Mechanisms31
Preparing the Operating Mechanisms32
Removing the Transport Lock32
Installing the Pole Columns34
Erecting the Pole Columns34
Positioning the Pole Columns35
Aligning and Connecting the Pole Columns37
Aligning and Connecting Pole Column B37
Connecting the Drive Rod to the Drive Lever38
Connecting the Operating Mechanisms and Pole Columns38
Mounting the High Voltage Terminal Pads40
Connecting the Cables41
Earthing (Grounding) the Circuit Breaker42
Commissioning43
Density Monitor43
Connecting the Cable43
Checking the Operating Points of the Density Monitor44
Filling the Pole Columns with Gas (Preparation)46
Establish Gas Connections between Density Monitor and Pole Columns47
Filling the Breaker with Gas48
Checking the Anti-Condensation Heater50
Connecting the Supply and Control Cables50
Functional Testing51
Test Operations51
Measuring the Running Time of the Charging Motor51
Measuring the Contact Resistance52
Measuring the Operating Times52
Checking Manual Operation53
Manually Charging the Closing Spring54
Checking the Anti-Pumping System55
Check Synchronized Operation55
Checking the Functional Lockout55
Operations Counter56
Final Tasks56
Troubleshooting57
Electrical Switching Commands Are Not Correctly Executed57
Mechanism Reconditioning Procedures58
Replacing the Charging Motor58
Replacing the Closing and Opening Coil59
Replacing the Operations Counter60
Replacing the Motor Limit Switch And/Or the Auxiliary Switch61
Replacing the Density Monitor63
Austausch einer Gasverbindung65
Inspection and Maintenance67
Ordering Accessories and Replacement Parts69
Inspection69
Visual Inspection69
Anti-Condensation Heater69
Checking Gas Pressure69
Maintenance70
Checking the Cable Connections70
Checking the Connecting Linkage70
Checking the Control Circuits70
Checking the Gas Quality71
Checking the Contact Resistance71
Checking the Operating Times71
Checking the Threaded Connections71
Reconditioning73
Reconditioning the Interrupter Chamber74
Disconnecting the Interrupter Chamber from the Post Insulator74
Removing the Double Motion System76
Removing the Guide Shaft77
Disconnecting the Making and Breaking Units78
Reconditioning the Movable Contact System78
Reconditioning the Fixed Contact79
Lubricating the Interrupter Unit79
Connecting the Making and Breaking Units80
Mounting the Guide Shaft82
Reconditioning the Holder83
Installing the Double Motion System84
Adjusting the Double Motion System86
Connecting the Interrupter Chamber to the Post Insulator87
Replacing the Adsorption Filter89
Final Operations90
Disassembling the Post Insulator and Crankcase90
Disassembling the Opening Springs91
Disassembling the Crankcase92
End-Of-Life Management95
Special Equipment (Optional)97
Easycheck Density Monitor Unit97
Functional Description98
Operating Condition99
Test Condition100
Flexlink-Gas Connection101
Setup of the Flexlink-Gas Connction101
If Flexlink Gas Piping Is Already Installed102
Flexlink Gas Piping Still Needs to be Installed103
Exchange of Flexlink Gas Connections104
A1 Description of the Equipment107
A1.1 Purpose107
A1.2 Main Components107
A1.3 Operation107
A2 Tools and Auxiliary Equipment109
A2.1 Customer-Supplied Materials and Equipment for Installation109
And Commissioning109
A2.2 Materials109
A2.3 Hoisting and Climbing or Lifting Equipment109
A2.4 Tools, Test Equipment and Auxiliary Equipment109
A2.4.1 Tool Recommendations110
A2.5 Greases for Installation, Commissioning and Maintenance113
A2.6 Locking Adhesives for Installation, Commissioning and Maintenance114
A2.7 Measuring Devices for Checking Gas Quality114
A2.8 Tools for Reconditioning115
A2.9 Auxiliary Materials and Supplies116
A3 Replacement Parts and Accessories117
A3.1 Servicing Equipment118
A3.2 Replacement of Arcing Contacts119
A3.3 Replacement Parts for Installation Work on Post Insulator and Crankcase119
A4 Handling Used Sulfur Hexafluoride121
A5 Technical Description123
Technical Data: Circuit Breaker Type GL 310-GL 312123
Technical Data: Circuit Breaker Type GL 313124
A5.3 Technical Data: Spring Operating Mechanism125
A6 Slow Operation for Maintenance Purposes127

Brand	GE
Model	GL 310 F3/4031 P/VR
Category	Circuit breakers
Language	English

GE GL 310 F3/4031 P/VR User Manual

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