GE Grid Solutions D25User's ManualGE Information 994-0081-3.00-21 67AC Analog InputsAC AnalogInputsThe D25 accepts up to 15 AC analog inputs, which are grouped into five setsof three each.The D25 can support virtually any combination of CTs and PTs.The only restrictions are:• TB1 inputs must be PTs• Each group of 3 transformers must be of the same typeIf no AC inputs are specified, AC Input configuration is disabled.Disabled parameters appear in dark green in the SGConfig I/O ConfigurationwindowNote: ACAnalog Inputsconfigured asPT inputsWhen configuring a D25 device with all AC inputs configured as PT inputs,add a CT input to the AC Circuit and set up as “voltage circuit only”. See theD25 AC Configuration properties > Circuits tab > Circuit 1 Properties >Voltage Only Circuit check-box in SGConfig.AC AnalogCircuitMappingA flexible AC input mapping feature, called E-Z Map, is included.• It allows you to configure, for each input of an AC circuit, the physical AC inputthat supplies the required signal.• It gives you complete flexibility in wiring the AC inputs and assigning them tothe appropriate circuit inputs.AC AnalogPhysical InputConnectionsAC INPUTSPT4, PT5, PT6orCT10, CT11, CT12TB 2 (1 - 6)AC INPUTSPT1, PT2, PT3TB 1 (1 - 6)PT7, PT8, PT9TB 3 (1 - 6)CT4, CT5, CT6TB 4 (1 - 6)CT7, CT8, CT9TB 5 (1 - 6)orCT1, CT2, CT3PT10, PT11, PT12orPT13, PT14, PT15or
