UPS_Power_Module_with_Battery_Technical_Specifications.docx

UPS Power Module, DC, PDU, Flywheel Preventive Maintenance Scope of Work Note the applicable features vary by type of equipment being contracted and additional scopes of work may be required.

Visual Inspection

1. Inspect all printed circuit board connections for cleanliness, swab contacts if necessary.

2. Inspect all power connections for signs of overheating

3. Inspect all subassemblies, bridges and legs for signs of component defects or stress

4. Inspect all DC capacitors for signs of leakage

5. Inspect all AC capacitors for signs of leakage

6. Inspect and inventory all customer-owned spare parts 7. Inspect for, and perform as required, any open engineering changes

Internal Parameters

1. DC Ground Detection Offset (if applicable)

2. Inverter leg current average balance (if applicable)

3. Output filter current average phase balance

4. Rectifier bridge current average leg balance

5. AC Protection settings are checked

6. DC Protection settings are checked

7. Input and Output Frequency and Voltage Bandwidth settings are checked

8. Verify DC filter capacitance

9. Verify AC tank and trap filter capacitance

10. Power Supply voltages and waveforms

11. Update firmware as necessary

12. Evaluate Field Service Bulletins (FSBs) for potential updates (parts if required are included at no charge under service agreements with full parts coverage, otherwise billable)

External Parameters

1. System Input Voltages (all phases)

2. System Input Currents (all phases)

3. DC Charging Voltages (float and equalize), record settings, adjust to nominal

4. Rectifier phase on and walk up

5. Inverter phase on and walk up

6. Adjust all panel meters to measured values

7. System Bypass Voltages (all phases)

8. Manual and UV Transfer Testing, verify uninterrupted transfer waveform (if applicable)

9. Outage simulation, and battery capability testing, and verify charger current limit

10. Generator operation and interface verification (if applicable)

Environmental Parameters

1. UPS area ambient temperature and condition of ventilating equipment

2. General Cleanliness of UPS Power Module

3. General Cleanliness of UPS area

4. Replace air filters as applicable and necessary (parts if required are included at no charge under service agreements with full parts coverage, otherwise billable)

5. Clean outside of UPS including control panel/CRT screen

6. Flywheel only: Drain oil and change oil and filters if required.

Battery Cabinet Checks

1. General appearance of Battery System (all types)

2. General cleanliness of Battery System area (all types)

3. Inspect cells for physical abnormalities

4. Inspect all DC connections for abnormalities

5. Battery System area ambient temperature and condition of ventilating equipment

Monitoring Parameters

1. Alarm archive review and printing

2. Alarm lamp test-local and remote (if applicable)

3. Replace all open monitor bulbs

4. Review Battery Test in history (if applicable)

Following the Preventive Maintenance inspection, a written report will be provided detailing the results of the inspection, and making specific recommendations toward future remedial action, upgrades, or sparing.

Sealed Battery System Preventive Maintenance Scope of Work Battery Maintenance of Battery Equipment includes, and is expressly limited to, those tasks set forth below. Due to the size and type of battery, testing and work procedures vary between battery jars above and below 100 watts per battery; work procedures may vary by UPS and battery type and may be limited by safety requirements Performed During Each Visit:

Visually inspect conditions and appearance of the following:

1. Connection terminals inter cell/battery connectors, cables and associated hardware

2. Cell/battery covers, containers, and post seals

3. Battery racks or cabinets and associated components and hardware for structural integrity

4. Inspect cleanliness / corrosion of batteries, cabinet, rack and area

5. Battery monitoring equipment (if present)

6. Cell/battery jar or cover, noting any excessive distortion

Measure and Record the following:

1. Individual cell/battery float voltages or overall float voltage

2. Charger output current and voltage

3. AC ripple current and voltage imposed on the battery

4. Internal ohmic values of each cell/battery or perform a continuity test of each cell/battery

5. Connection Resistance of 100% of the inter cell/battery connection

6. Ambient temperature and ventilation status

7. Negative terminal temperature of all cells/batteries

Perform cleaning of all accessible surfaces as required Reporting Each Preventive Maintenance Visit:

1. The technician(s) will issue the customer a verbal report summarizing the condition of the battery and identifying any critical issues before leaving the customer’s site.

2. A detailed report containing all readings and observations will be sent to the customer within five business days.