Specifications

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16.2.4.2. UPS Internal Battery Semi-Annual Service
16.2.4.2.1. Inspect the appearance and cleanliness of the battery and the battery room. Clean
normal cell top dirt accumulation (to be done only with battery off line).
16.2.4.2.2. Measure and record the total battery float voltage and charging current.
16.2.4.2.3. Measure and record the overall AC ripple current.
16.2.4.2.4. Measure and record the overall AC ripple voltage.
16.2.4.2.5. Visually inspect the jars and covers for cracks and leakage.
16.2.4.2.6. Visually inspect for evidence of corrosion.
16.2.4.2.7. Measure and record the ambient temperature.
16.2.4.2.8. Verify the condition of the ventilation equipment, if applicable.
16.2.4.2.9. Verify the integrity of the battery rack/cabinet.
16.2.4.2.10. Measure and record 100% of the cell temperatures.
16.2.4.2.11. Measure and record the float voltage of all cells.
16.2.4.2.12. Measure and record all internal impedance readings.
16.2.4.2.13. Provide a detailed written report noting any deficiencies and corrective action
needed, taken and/or planned.
16.2.4.2.14. Re-tighten all battery connections to the battery manufacturer's specifications, offline
only.*
*Service performed Annually Only
16.2.4.3. Corrective Battery Maintenance Performed as Required
16.2.4.3.1. Refurbish cell connections as deemed necessary by the detailed inspection report.
17. Optional Rack Power distribution
17.1. SUMMARY
Liebert MPH Managed Rack PDU power system, hereafter referred to as the Liebert MPH, delivers
power distribution, monitoring and receptacle control to plug/cord connected IT devices and sensitive
electronic equipment loads.
17.2. STANDARDS
Liebert MPH is designed in accordance with the applicable sections of the current revision of the
following documents. Where a conflict arises between these documents and statements made herein,
the statements in this specification will govern.
17.3. North America
17.3.1.1. 120V & 208V Single Phase and 3 phase Units
17.3.1.1.1. UL 60950-1 Information Technology Equipment
17.3.1.1.2. CAN/CSA-C22.2 No. 60950-1-03 Information Technology Equipment
17.3.1.1.3. FCC, Title 47, Part 15 Subpart B for Class B operation as defined by ANSI
Standard C63.4
17.3.1.1.4. ROHS Compliant
17.3.1.1.5. ISTA Procedure 1A and 2A
17.4. System Description
Liebert MPH Rack PDU’s, with remote monitoring and/or control capabilities for power distribution at
the load/equipment level, are designed to support the growth in rack electrical needs while meeting the
new demands for remote power management. These products are a part of the Rack PDU’s from
Emerson Network Power - a family of rack power distribution systems designed to manage power from
the UPS all the way to each individual receptacle.