Voltcraft LT-100Tester LT-100 User Manual

To maintain this condition and ensure safe operation, the user must observe all safety instructions and warnings 

included in this manual. 

   Please follow the important information in these operating instructions indicated by the symbol with the 

exclamation mark in the triangle. 

   A lightning symbol in the triangle warns against electric shock or impairing the electronic safety of the 

device.

   The “Arrow” symbol indicates special tips and information about operation.

  This device conforms to the CE and fulfills the required European guidelines

  Protection class 2 (double or enhanced insulation, protective insulation) 

Cat I 

 Measuring category I for measurements on electric and electronic devices, which are not directly supplied 

with mains voltage(e.g. battery operated devices, protective extra low voltage, signal and control voltages 

etc.)

Cat II 

 Measuring category II for measurements at electric and electronic devices, which are directly supplied 

with mains voltage via a power plug. This category also includes all smaller categories (e.g. CAT I for 

measuring signal and control voltages).

Cat III   Measuring category III for measurements in the building installation (e.g.. power plugs or sub-distribu-

tors). This category includes all lower categories (i.e. CAT II for measurements on electrical devices). 

Cat Iv   Measuring category IV for measurements at the source of the low voltage installation (e.g. main distribu-

tor, house interconnection points of the energy supplier etc). and outdoors (e.g. work on earth cables, 

overhead lines etc.). This category includes all lower categories. 

  Earthing potential