) mechanical switching device association devices
intended cause the opening the contacts when the residual current attains given
value under specified conditions
direct contact contact persons livestock with live parts
indirect contact contact persons livestock with exposed conductive parts, which have
been become live under fault conditions
hazardous-live-part live part which, under certain conditions, can have adverse effect on
humans and animals electric shock
.BASIC TERMS AND DEFINITIONS FOR ELECTRICAL SAFETY AND ELECTRICAL INSTALLATIONS 17
3. BASIC TERMS AND DEFINITIONS FOR ELECTRICAL SAFETY AND
ELECTRICAL INSTALLATIONS
Terms and definitions connected with electric shock:
electric shock pathophysiological effect resulting from electric current passing through the
human animal body
shock current current passing through body person animal and having
characteristics likely cause pathophysiological effects
protection against electric shock the provision measures reducing the risk electric shock
cardiac fibrillation fibrillation muscle one more heart chambers leading the
disturbance some functions the heart
ventricular fibrillation cardiac fibrillation, limited the ventricles leading ineffective
blood circulation and then heart failure
let-go-threshold-current
releasing current (deprecated)
let-go-current (USA) (deprecated) the maximum value current which person holding
electrodes can let the electrodes
touch voltage voltage appearing between simultaneously accessible parts
Note: convention, this term used connection with protection against indirect
contacts.c.
residual current device (r.d.
leakage current
earth current current which under normal operating conditions flows unintended path
short-circuit current the current flowing given point network resulting from short-
circuit another point this work
residual current the algebraic sum the instantaneous values current flowing through all
live conductors circuit point the electrical installation
Note: Term the relevant protective device:
IEC: residual-current protective device
