Siemens SENTRON 3VL System Manual page 6

Table of contents
6.1 Use with frequency converters.................................................................................................... 65
6.2 Use of capacitor banks................................................................................................................ 67
6.3 Primary-side transformer protection............................................................................................ 68
6.4 Use in DC systems...................................................................................................................... 69
6.5 Use in IT networks ...................................................................................................................... 71
6.6 Use in the motor protection area................................................................................................. 74
6.7 Use in harsh environments: ........................................................................................................ 78
6.8 Use in series connection ............................................................................................................. 81
7 Installing/mounting................................................................................................................................... 83
7.1 Installation methods .................................................................................................................... 83
7.2 Mounting and safety clearances ................................................................................................. 87
7.3 Locking devices........................................................................................................................... 91
8 Connecting .............................................................................................................................................. 97
8.1 Cables and busbars .................................................................................................................... 97
8.2 Main connection types for fixed mounting................................................................................. 107
8.3 Main connection methods for plug-in and withdrawable version .............................................. 114
8.4 Terminal assignments ............................................................................................................... 116
8.5 Auxiliary switch designations .................................................................................................... 118
8.6 Description of the terminals....................................................................................................... 118
9 Displays and operator controls .............................................................................................................. 121
9.1 Overcurrent trip unit without LCD display ................................................................................. 121
9.2 Overcurrent trip unit with LCD display ...................................................................................... 125
9.3 Stored-energy motorized operating mechanism ....................................................................... 133
10 Parameter assignment/addressing ........................................................................................................ 135
10.1 Setting the parameters.............................................................................................................. 135
10.2 Setting the protection parameters for motor protection (ETU10M, ETU30M and LCD-ETU
40M) .......................................................................................................................................... 139
11 Service and maintenance ...................................................................................................................... 141
11.1 Preventive measures ................................................................................................................ 141
11.2 Troubleshooting ........................................................................................................................ 143
12 Technical data ....................................................................................................................................... 145
12.1 Technical overview.................................................................................................................... 145
12.2 Configuration of main connections............................................................................................ 150
12.3 Switching capacity overview ..................................................................................................... 153
12.4 Switching capacity overview ..................................................................................................... 157
12.5 Derating factors......................................................................................................................... 159
12.6 Power loss................................................................................................................................. 167
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3VL molded-case circuit breakers
System Manual, 03/2009, 110 0110 - 02 DS 01