Technical data

Protective Devices

Tripping Characteristics (IEC/EN 61008)

§ 6.1.1 of ÖVE/ÖNORM E 8001-1/A1 deals with additional pro-

tection and provides essentially the following:

In circuits with sockets up to 16 A with fault current/residual cur-

rent protection by protective earthing, protective multiple earthing or

residual current devices (RCDs), additional residual current protec-

tion devices with a rated tripping current of 0.03 A must be installed.

This means when using RCDs for fault current/residual cur-

rent protection two RCDs must be connected in series.

Testing:

RCDs with tripping time delay (Types -G and -S) may be function test-

ed with conventional testing equipment which must be set according

to the instructions for operation of the testing device. Due to reasons

inherent in the measuring process, the tripping time determined in

this way may be longer than expected in accordance with the speci-

fications of the manufacturer of the measuring instrument.

However, the device is ok if the result of measurement is within the

time range specified by the manufacturer of the measuring instru-

ment.

Tripping characteristics, tripping time range and selectivity of instantaneous,

surge current-proof "G" and surge current-proof - selective "S" residual cur-

rent devices.

Tripping time t

Tripping time range type S

Residual tripping current

surge current.-

proof - selective

surge current-

proof

conditionally

surge current-

proof

Tripping time range type G

Tripping time range limit values

Tripping time range non-delayed

Area of unwanted tripping