ABB RELION REX640 - Page 1951

Description Type test value Reference
2 kV, 50 Hz, 1 min, all other
circuits
Impulse voltage test
1 kV, 1.2/50 μs, 0.5 J, RS-485
and IRIG-B
2.4 kV, 1.2/50 μs, 0.5 J, Ether-
net RJ-45
5 kV, 1.2/50 μs, 0.5 J, all other
circuits
IEC 60255-27
Insulation resistance meas-
urements
>100 MΩ, 500 V DC IEC 60255-27
Protective bonding resistance <0.1 Ω, 4 A, 60 s IEC 60255-27
Maximum temperature of
parts and materials
Tested IEC 60255-27
Flammability of insulating
materials, components and
fire enclosures
Evaluated / Tested IEC 60255-27
Single-fault condition Tested IEC 60255-27
Table 1689: Mechanical tests
Description Requirement Reference
Vibration tests (sinusoidal) Class 2
IEC 60068-2-6 (test Fc)
IEC 60255-21-1
Shock and bump test Class 2
IEC 60068-2-27 (test Ea
shock)
IEC 60068-2-29 (test Eb
bump)
IEC 60255-21-2
Table 1690: Environmental tests
Description Type test value Reference
Dry heat test
96 h at +55°C
16 h at +85°C
1
IEC 60068-2-2
Dry cold test
96 h at –25°C
16 h at –40°C
IEC 60068-2-1
Damp heat test 6 cycles (12 h + 12 h) at +25…
+55°C, humidity >93%
IEC 60068-2-30
Change of temperature test 5 cycles (3 h + 3 h) at
-25...+55°C
IEC60068-2-14
Storage test
96 h at –40°C IEC 60068-2-1
1
For relays with an LC communication interface the maximum operating temperature is +70°C.
1MRS759142 F Protection relay and functionality tests
REX640
Technical Manual
1951