ABB SPAU 331 C - Data communication; Test voltages *); Disturbance tests *)

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Residual overvoltage relay module SPCU 1C6
See "Technical data" in the document 1MRS 750509-MUM EN for the relay module.
Two-stage undervoltage relay module SPCU 3C15
See "Technical data" in the document 1MRS 750588-MUM EN for the relay module.
Data communication
Transmission mode Fibre-optic serial bus
Coding ASCII
Data transfer rate, selectable 300, 1200, 2400, 4800 or 9600 Bd
Optical bus connection module powered from
the host relay
- for plastic-core cables SPA-ZC 21 BB
- for glass-fibre cables SPA-ZC 21 MM
Optical bus connection module powered from
the host relay or from an external power source
- for plastic-core cables SPA-ZC 17 BB
- for glass-fibre cables SPA-ZC 17 MM
Test voltages *)
Dielectric test voltage according to IEC 255-5 2 kV, 50 Hz, 1 min
Impulse test voltage according to IEC 255-5 5 kV, 1.2/50 µs, 0.5 J
Insulation resistance according to IEC 255-5 >100 MΩ, 500 V dc
Disturbance tests *)
High-frequency (1 Mhz) disturbance test
according to IEC 255-22-1
- common mode 2.5 kV
- differential mode 1.0 kV
Electrostatic discharge test according
to IEC 255-22-2 and IEC 801-2, class III
- air discharge 8 kV
- contact discharge 6 kV
Fast transients according to IEC 255-22-4,
class III and IEC 801-4, level IV
- power supply inputs 4 kV, 5/50 ns
- other inputs 2 kV, 5/50 ns
Rf electromagnetic field test according to
IEC 1000-4-3 and ENV 50140, f = 80...1000 Mhz 10 V/m
Conducted rf disturbance test according to
ENV 50141 and IEC 1000-4-6, f = 150 kHz...80 Mhz 10 V