Electrical safety testing system

voltageoperationalvibration

Final testing bench for brushless servomotors Compact testing system for the final testing of fully assembled motors. Aim of the final testing bench was to enable the customer to test different motor sizes and output classes. The partly heavy weight of the motors made top loading using a crane necessary, in addition to the normal mounting from the front. In addition to the safety and function tests, vibration measurement must also be performed. Another difficulty was the large number of different connector plugs and different sensor systems. Solution Easy-to-use PC software and a sophisticated switching matrix allowed testing of all the different motor sizes and output classes. Over a network connection, the different motors are identified and assigned using a bar code scanner and the corresponding test program is loaded. The test results are stored under the serial number with operator's name, date and the test results on the server. All of the different sizes in the test system could be contacted due to the different DUT supports. Operation with up to six different types of sensors is possible. Vibration is measured on the two bearing flanges. For this purpose, the testing cabin was hermetically sealed, but provided with an opening to the top. This is used for the desired crane loading. In addition to the ground bond test, the hipot test was performed between the different potentials such as winding, housing, and the thermal sensor. Other tests performed are the EMC voltage test, winding resistance test and the function test at different target rpms.