a) Diagnose control issue. Symptoms include: a. LTC intermittently will not raise taps when called for in Auto Mode or Manual Mode. i. Crank/handle operation is normal and feels smooth. ii. LTC does not experience any problems/controls issue when lowering. b. OLTC 15 Amp, 120V circuit breaker CB3 trips intermittently. c. SEL 2414 reports high motor current alarm. b) Contractor will furnish and install all replaceable parts of the LTC control circuit (OLTC). This includes, but is not limited to, the braking resistors, contactors, timers, motors, etc. a. Please refer to photos, transformer manual, and LTC drawings here: Perry LTC Supporting Documents 2025 b. LTC motor capacitor(s) were replaced with new on 08/16/25 – these do not need to be furnished nor installed by Contractor. c. Dynamic braking resistor may need to be replaced and/or tuned. d. Motor may need to be replaced. c) Wire sensing voltage from SEL-2414 controller to Beckwith test points for measurement with a handheld voltmeter. d) Functionally test operation of the LTC a. Raise in Manual Mode b. Raise in Auto Mode c. Lower in Manual Mode d. Lower in Auto Mode
