AMETEK CTS
CDN 117A series
Operation Manual
V 1.00
20 / 30
6.4.
Calibration procedure as per IEC 61000-4-5 Ed3
6.4.1. General
It is recommended and sufficient to calibrate the CDNs for interconnection lines in the same configuration that
will be used for testing. The residual surge voltage measured between the surged lines and ground on the AE
side of the CDN, with the EUT and AE equipment disconnected, shall be measured and recorded so that users
of the CDN may determine if the protection is sufficient for use with a particular AE.
6.4.2. Calibration procedure for CDNs for unsymmetrical interconnection lines
Measurements shall be performed with the impulse applied to one coupling path at a time.
The peak amplitude, the front time and impulse duration shall be measured for the CDN rated impulse voltage
and current at the EUT output port according to (Table 7 of IEC 61000-4-5 Ed3.0).
The inputs of the decoupling network at the AE side shall be short-circuited to PE for the impulse voltage and
impulse current measurement at the EUT output port.
The residual voltage value depends on the protection requirements of the AE. Therefore, no limits are given in
this standard.
Coupling
Measuring
AE side
EUT side
Surge voltage
at EUT side
Single line to PE
Single line
Peak voltage,
front time, duration
All lines shorted to PE
Open
–circuit
Surge current
at EUT side
Single line to PE
Single line
Peak current,
front time, duration
All lines shorted to PE
Short-circuit
Surge voltage
at EUT side
Single line to line
Single line
Peak voltage,
front time, duration
All lines shorted to PE
Open
–circuit
Surge current
at EUT side
Single line to line
Single line
Peak current,
front time, duration
All lines shorted to PE
Short-circuit
Residual voltage
on AE side (with protec-
tion elements)
Single line to PE
Line to PE at a time
peak voltage
Open
–circuit
Open
–circuit
Table 7 IEC 61000-4-5 Ed3.0 Summary of calibration process for CDNs for unsymmetrical interconnection lines