
Technical Data
43
Product safety-related Tests
Item
Standard
Data
Over voltage category
IEC60255-27
Category III
Pollution degree
IEC60255-27
Degree 2
Insulation
IEC60255-27
Basic insulation
Degree of protection (IP)
IEC60255-27
IEC 60529
Front plate: IP40
Rear, side, top and bottom: IP 30
Power
frequency
high
voltage
withstand test
IEC 60255-5
EN 60255-5
ANSI C37.90
GB/T 15145-2001
DL/T 478-2001
2KV, 50Hz
2.8kV DC
between the following circuits:
auxiliary power supply
CT / VT inputs
binary inputs
binary outputs
case earth
500V, 50Hz
between the following circuits:
Communication ports to case
earth
time synchronization terminals
to case earth
Impulse voltage test
IEC60255-5
IEC 60255-27
EN 60255-5
ANSI C37.90
GB/T 15145-2001
DL/T 478-2001
5kV (1.2/50μs, 0.5J)
If U
i
≥63V
1kV if U
i
<63V
Tested between the following
circuits:
auxiliary power supply
CT / VT inputs
binary inputs
binary outputs
case earth
Note: U
i
: Rated voltage
Insulation resistance
IEC60255-5
IEC 60255-27
EN 60255-5
ANSI C37.90
GB/T 15145-2001
≥ 100 MΩ at 500 VDC