IS200TRLYH1BGF|Relay terminal boards used in Mark VI turbine control systems
The IS200TRLYH1B is a terminal relay card manufactured by GE for the Mark VI fan control system. This board is the “B” version of the TRLY terminal relay board and has the following characteristics:
Voting coil drive feedback
Socket type sealed mechanical relay
MOV inhibition
48 fence terminals
Physical description of IS200TRLYH1B:
The left edge of the IS200TRLYH1B contains two (2) large black terminals. Each terminal has twenty-four (24) silver metal terminals. There are forty-eight (48) terminals in total. Each terminal block is labeled with white lettering. Four (4) connector ports have been placed on the right bezel of the IS200TRLYH1B. Three (3) connector ports are aligned vertically at the edges, with the last one parallel to the connector port at the bottom. Near the center of the IS200TRLYH1B, there is a long row of white and black relays with cube-shaped transparent LIDS. These components have been connected to the PCB by black wire. Each relay has a round black transistor on either side. Paired with each transistor is a round red MOV or metal oxide varistor. Five (5) of these relays are arranged vertically on the top half of the IS200TRLYH1B. Five (5) additional relays have been aligned on the bottom half of the PCB.