ABB REL 356

ABB REL 356 Current Differential Protection
2-20
Installation, Operation and Maintenance
PONI
BACKPLANE BD.
PROCESSOR BD.
DISPLAY BD.
FT-14
POWER SUPPLY
ANALOG INPUT BD.
FT-14
CONTACT INPUT BD.
RELAY OUTPUT BDS.
XFMR
INTERCONNECT BD.
D
Digital Comm Interface
D
CODEC ❊ Modem
D
56/64 bps Digital Comm. Option Only
❊ 9600 bps audio Tone Channel Option Only
Figure 2-3. Layout of REL 356 Modules Within Inner and Outer Chassis