tailieunhanh - Power Training & Trouble Shooting Case

Tài liệu tham khảo cho các bạn sinh viên học chuyên ngành tham khảo để ôn thi tốt | 5/13/2020 10:19:34 PM ---For Vietnam HT Project Power Training & Trouble Shooting Page Case 1: Battery circle circuit broken alarm for APM30 Q: When will happen “Battery circle circuit broken alarm”? A: 1/ Power switch of the battery on EPS90 rack is off 2/ Power switch of the battery in battery cabinet is off 3/ Contactor of BLVD inside the EPS90 rack is open The “battery circle circuit broken alarm” will happen, if one of the up presupposition exist. Power switch of the battery Page Case 1: Battery circle circuit broken alarm for APM30 Q: If there is “Battery circle circuit broken alarm”, how to shoot the trouble on field? A: 1/ Check the Power switch of the battery in EPS90 rack and battery cabinet. 2/ Check the AC power. 3/ Check the battery bank voltage. If all the Power switch of battery is on, and AC(EVN) shut down, and battery bank voltage lower than 43V, the APM30 is working normal. The generator should be start to supply power. (read next page) If all the power switch of battery id on, and AC(EVN) is normal, battery bank voltage is over 43V, then should test the EPS90 sub-rack (read case 2). Page Case 1: Battery circle circuit broken alarm for APM30 Q: What is control logic of the contactor for LLVD and BLVD inside the EPS90 sub-rack? A: When AC(EVN) shut down, the battery discharge to supply the load. When battery voltage lower than 44V, APM30 will open LLVD contactor, disconnect the load of LOAD1. When battery voltage lower then 43V, APM30 will open BLVD contactor, disconnect the load of LOAD2. Note: LLVD: Load Low Voltage Disconnect BLVD: Battery Low Voltage Disconnect Page Case 2: EPS90 Testing Q: How to Test EPS90 sub-rack. A: Step1: Install PMU and PSU, Connect AC input, disconnect battery, Disconnect Load1 and Load2, Put off Power switch of the battery; Measure the Voltage between BAT.(+) and BAT.(-), voltage between RTN(+) and Load1(-), Voltage between RTN(+) and Load2(-). All of the voltage should be about . Step2: . | 5/13/2020 10:34:52 PM ---For Vietnam HT Project Power Training & Trouble Shooting Page Case 1: Battery circle circuit broken alarm for APM30 Q: When will happen “Battery circle circuit broken alarm”? A: 1/ Power switch of the battery on EPS90 rack is off 2/ Power switch of the battery in battery cabinet is off 3/ Contactor of BLVD inside the EPS90 rack is open The “battery circle circuit broken alarm” will happen, if one of the up presupposition exist. Power switch of the battery Page Case 1: Battery circle circuit broken alarm for APM30 Q: If there is “Battery circle circuit broken alarm”, how to shoot the trouble on field? A: 1/ Check the Power switch of the battery in EPS90 rack and battery cabinet. 2/ Check the AC power. 3/ Check the battery bank voltage. If all the Power switch of battery is on, and AC(EVN) shut down, and battery bank voltage lower than 43V, the APM30 is working normal. The generator should be start to supply power. (read next page) If all the power .