
ITU-T K.20 and K.21
2002 Teccor Electronics
SIDACtor
Data Book and Design Guide
4 - 13
http://www.teccor.com
+1 972-580-7777
R
R
* One-minute rest between repetitions
Table 4.13
K.21 Power Cross Test Conditions for Telecom Type Ports, Metallic, and Longitudinal
Voltage
Basic/Enhanced
Current
Basic/Enhanced
(A)
Duration
Basic/Enhanced
Repetitions *
Primary
Protection
Acceptance Criteria
Basic/Enhanced
600 V / 600 V
50 Hz or 60 Hz
1/1
0.2 s
5
None
A/A
600 V / 1.5 kV
50 Hz or 60 Hz
1/7.5
1 s/2 s
5
Installed if
used
A/A
230 V / 230 V
50 Hz or 60 Hz
23/23
15 min
1
None
B/B
11.5/11.5
B/B
5.75/5.75
B/B
2.875/2.875
B/B
1.44/1.44
B/A
0.77/0.77
B/A
0.38/0.38
B/A
0.23/0.23
B/B