Kewtech KT64 User Manual

32
▲ Tripping time tΔ is the time needed by the RCD to trip at a rated residual
operating current of IΔn. The standard values of tripping time are defined
by IEC 61009 (EN61009) and IEC 61008 (EN 61008) and are listed in the
table below for IΔn and 5IΔn.
Type of RCD IΔn 5IΔn
General(G) 300ms
max allowed value
40ms
max allowed value
Selective(S) 500ms
max allowed value
150ms
max allowed value
130ms
min allowed value
50ms
min allowed value
Typical examples of instrument connection
Practical example of 3-phase + neutral RCD test in a TT system.
Practical example of single phase RCD test in a TN system.
Fig. 31
Fig. 32
RCD

Kewtech KT64 Specifications

General

Brand	Kewtech
Model	KT64
Category	Measuring Instruments
Language	English