AEC Star T3 Service Manual
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AEC Star T3 Service Manual

6kva-10kva 220vac
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Service Manual
STAR T3/T3R UPS
6kVA~10kVA 220VAC
www.allis.com.tw

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  • Page 1 Service Manual STAR T3/T3R UPS 6kVA~10kVA 220VAC www.allis.com.tw...

  • Page 2: Table Of Contents

    ST3 6-10kVA Service Manual Rev.1 Content 1. PSDR Introduction..........................1 1.1 6/10 kVA PSDR-Right side ...................... 1 1.2 6/10 kVA PSDR-Left side ......................1 2. Fault and Warning ..........................2 3. Troubleshooting..........................3 3.1 Quick Start..........................3 3.2 PFC Analysis:.......................... 4 3.3 Boost Analysis.........................

  • Page 3: St3 6-10Kva Service Manual Rev

    ST3 6-10kVA Service Manual Rev.1 1. PSDR Introduction 1.1 6/10 kVA PSDR-Right side 1.2 6/10 kVA PSDR-Left side 1. Bypass Mosfet Driver 2. Inverter IGBT Driver Module 3. Boost IGBT Driver Module 4. PFC IGBT Driver Module Allis Electric Page 1 of total 13 September 2006...

  • Page 4: Fault And Warning

    ST3 6-10kVA Service Manual Rev.1 2. Fault and Warning LCD & LED Status / Possible Cause Action Audible Alarms 1. Fan fail. Replace the fan. AC: OK BATT: OK 2. Temperature is Reduce ambient TEMP Fail higher than temperature or O/P load. Fault Warning Normal...

  • Page 5: Troubleshooting

    ST3 6-10kVA Service Manual Rev.1 3. Troubleshooting 3.1 Quick Start For the 6 and 10kVA, both of the boards are the same size, only the some power components of 10kVA should be more than 6kVA. Before any check of UPS, please check the components as listed in the following table. This action could help you find problem quickly and make sure these components good or not first.

  • Page 6: Pfc Analysis

    ST3 6-10kVA Service Manual Rev.1 3. Troubleshooting 3.2 PFC Analysis: In this section, some components you could check to see if failure occurs on PFC Correction circuit as shown below. Be aware of F301, F302 fuse open indicates failure of this block. Please replace all faulty components before re-start the UPS. 6/10kVA-PFC-Right side 6/10kVA-PFC-Left side Step...

  • Page 7: Boost Analysis

    ST3 6-10kVA Service Manual Rev.1 3. Troubleshooting 3.3 Boost Analysis 6/10kVA-Boost-Right side 6/10kVA-Boost-Left side Step Checked components Instrument Reference Failure Mode Value function Q306~Q311 (E,C) Ω 800kΩ short (G,E) Ω 15.8kΩ short or open D308, D310, D309, D311 DIODE 0.35V D302, D304, D306, D303, DIODE 12Ω...
  • Page 8 ST3 6-10kVA Service Manual Rev.1 R325, R331, R334, R342, Ω 10Ω open R337, R328 R390, R388, R389, R393, Ω 2.2Ω open R392, R391 F303, F304 Ω 0Ω open Q305 (A,K) Ω 2.5MΩ short (G,K) Ω 10Ω short Action ltem: If all above-stated components are replaced well and UPS still can’t be DC start, change Boost IGBT Driver Module.

  • Page 9: Inverter Analysis

    ST3 6-10kVA Service Manual Rev.1 3. Troubleshooting 3.4 Inverter Analysis 6/10kVA-Inverter-Right side 6/10kVA-Inverter-Middle side 6/10kVA-Inverter-Left side Step Checked components Instrument Reference Failure Mode function Value Q201,Q202, (E,C) Ω 100kΩ Short Q203,Q204 (G,E) Ω 23.5kΩ Short or Open D201,D202,D203,D204,D205 Diode 0.36V D210,D211,D212,D213 Diode 46Ω...

  • Page 10: Charger Module Analysis

    ST3 6-10kVA Service Manual Rev.1 3. Troubleshooting 3.5 Charger Module Analysis 6/10 kVA-Charger Module- Long back-up type Step Checked components Instrument Reference Failure Mode function Value open Ω Ω Q301 (E,C) Ω Ω ≈1M Q105 (G,E) Ω Ω ≈0.4V D303 DIODE R315 open...
  • Page 11 ST3 6-10kVA Service Manual Rev.1 6/10 kVA- Charger Module- Standard type Step Checked components Instrument Reference Failure Mode function Value F901,F902,F903, open Ω Ω F904,F905,F906, Q907,Q908, (S, D) Ω Ω ≈1.7M (G, S) Ω Ω D901,D902, ≈0.4V DIODE D903 Q909 (A, K) Ω...

  • Page 12: Pfc / Boost / Inverter Igbt Driver Module Analysis

    ST3 6-10kVA Service Manual Rev.1 3. Troubleshooting 3.6 PFC / Boost / Inverter IGBT Driver Module Analysis 6/10kVA-Boost-Right side 6/10kVA-Boost-Left side Step Checked components Instrument Reference Failure Mode function Value ZD201 0.7V 1(RED) Q201,Q202 =0625V, =0.625V R203,R205 Ω 10Ω Open 2(BLUE) D201 0.580V...

  • Page 13: Final Testing

    ST3 6-10kVA Service Manual Rev.1 4. Final testing After you have replaced all defective components on power stage (PSDR), please follow the steps as below. Step 1. Install the PSDR board into UPS unit, but DO NOT connect with “Battery” and “Input source”. - Before go to step 2, make sure all of the cable should be connected the right position.
  • Page 14 ST3 6-10kVA Service Manual Rev.1 4. Final testing Step 3. If the UPS re-start normally, check the DC_BUS and output voltage. - For 6/10kVA, DC_BUS: +340~350 and -340~350VDC, deviation between negative and positive voltage should be within 10VDC. Output Voltage: 220/230/240 +/-2% DC-BUS Voltage: Positive DC_BUS: + 340~350VDC DC-BUS Voltage: Negative...
  • Page 15 ST3 6-10kVA Service Manual Rev.1 4. Final testing Output Voltage Output Voltage: 220/230/240 +/-2% Step 5. Connect with AC power source, then follow the step3 and step4 to check the DC_BUS and output voltage again. Also, the charger voltage need to be confirmed, the charger voltage should be 274VDC +/-1%. If UPS fails to start up for several times, there must be some defective components exist.

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