Discharge Modules and Grounding of dito
- A discharge module includes capacitors as required in the related standard. The user must take into account that a capaci-
tor is still charged. The charged energy is so low that there is no danger to life. The energy is lower as required in standard
IEC 61010.
- During the test, the discharge tip is at high voltage potential. Touching the discharge tip during a running test may cause
uncomfortable discharges to the operator. Due to the low energy there is no danger to life.
Risk of electrical shock. Do not touch any metallic part at the discharge module.
The 2m grounding cable must always be connected to the dito during any operation.
Do not discharge the simulator into the air, because electrostatic charge
can discharge and shock the operator.
Remarks to the correct application with ESD generators.
Earth cable not connected
The 2m grounding cable, which is required by the standards, must always been connected between ESD simulator and the
ground reference system. In case that the grounding cable is not connected, the discharge current of the simulator will flow
through the body of the operator and may cause uncomfortable discharges.
Discharge to the air
When discharge the ESD simulator to the air, all not grounded parts are charged and keep the charged load. When touch
the housing after such event it can happen that people are discharge the charged parts and get an electrical shock up to
some kilovolts.
Between the ditto and the hand surface is a stray capacitance. When the operator discharge an ESD impulse into the air the
stray capacitance generates a potential between the discharge module and the operator. The effect is a discharge to the
operator with return through the earthcable to the ESD simulator.
To Next Page
Loading...
Need help?
General
