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Installation and Operations Manual

SEI DC-UPS SERIES

SEI Incorporated
5115 Pegasus Court, Suite Q
Frederick, Md 21704
Phone 301-694-9601
Fax       301-694-9608
Email

[email protected]

Web Http//www.seipower.com

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Summary of Contents for DC-UPS Series

Page 1: ...Installation and Operations Manual SEI DC UPS SERIES SEI Incorporated 5115 Pegasus Court Suite Q Frederick Md 21704 Phone 301 694 9601 Fax 301 694 9608 Email Info seipower com Web Http www seipower com ...

Page 2: ...e of Contents 1 Description 2 Technical Specifications 3 Environmental Specifications 4 Safety Information 4 Installation Instructions 5 Startup and Checkout 7 Theory of Operation 8 Repair and Maintenance 11 Output Module A 13 ...

Page 3: ...Watts SEI 750 13 5 Amps 750 Watts Three output distribution modules are available The M module contains two individually fused 8 pin Molex Minifit connectors The A module contains two individually fused 2 pin AMP Mat N Lok connectors The P module features two individually fused binding posts The 250 houses one output distribution module the 500 two modules and 750 accommodates three output distrib...

Page 4: ...EI 500 Electrical Specifications Input Voltage 120 10 15 VAC Frequency 50 60 Hz Current 6 amps Max Output Voltage 42 56VDC Current 9 amps Mechanical Dimensions Width 19 00 Inches Depth 5 00 Inches Height 20 00 Inches Weight 34 lbs SEI 750 Electrical Specifications Input Voltage 120 10 15 VAC Frequency 50 60 Hz Current 9 amps Max Output Voltage 42 56VDC Current 13 5amps Mechanical Dimensions Width ...

Page 5: ... assigned to the job can perform the job safely Always lift all equipment properly Always disconnect commercial power and remove the battery fuse before working on the unit Always replace the batteries with batteries of the same type and style DO NOT work on this equipment during an electrical storm DO NOT work in locations where there is condensing moisture or standing water Service to the DC UPS...

Page 6: ...er for damage If damaged request that the carrier inspect the shipment Unpack the inner container from the shipping container and remove the unit from the packaging Inspect the unit for visible damage If a claim for damages is to be made it should be filed promptly with the transportation company In addition notify SEI within two days of delivery SEI will advise the customer of any further procedu...

Page 7: ...ywood backboard or equivalent is required The DC UPS should be fastened to the backboard using number ten wood screws A number 27drill can be used to provide a pilot hole for the screws All of the screws should be tightened with a torque of 30 in lb minimum and 34 in lb maximum The unit should be mounted vertically in a clean dry area where the ambient temperature does not exceed 40 C 104 F It is ...

Page 8: ...ble or alarm contacts cable if so optioned Attach the supplied AC power cord to the left side of the DC UPS Plug in the DC UPS power cord into the commercial AC outlet made available for this unit When power is first applied the unit should display a flashing green Battery Charge Status LED and a solid green Battery Test Status LED Connect the user equipment to the DC UPS output connectors located...

Page 9: ...r provides up to 250 watts of power The SEI 250 has one 250W rectifier the SEI 500 has two rectifiers and the SEI 750 contains 3 rectifiers The input of each rectifier is fused for protection System Controller LVD The System Controller has the following functions Distribution of the DC power Battery charge voltage and current control and monitoring Battery Low Voltage Disconnect Function LVD Batte...

Page 10: ...e the Manual Battery Test is disabled for 5 minutes following a Battery Test In both cases the Wait Then Test indication is displayed Low Voltage Disconnect Function The low voltage disconnect function will disconnect the battery when the battery voltage drops below a 42 Vdc This is done to prevent deep discharge of the batteries which can adversely affect battery life Both internal and external b...

Page 11: ...the user s external monitoring circuitry The alarm contacts have a 2 Amp rating The NO and NC contacts will change state when an alarm condition occurs The connector state pin outs are printed on the System Controller Card Alarm Access and Connection The alarm connectors are located on the front edge of the System Controller Card and are accessible via an RJ45 connector on the front cover The Alar...

Page 12: ...it should be between 54 0 and 55 5 volts If the measured voltage is outside of this range perform the following steps SEI 250 1 Remove the battery fuse located on the right side panel Disconnect any external battery packs 2 Loosen the front panel mounting screws and remove the front panel 3 Connect the digital voltmeter to one of the external battery 2 pin connectors of the unit 4 Locate the blue ...

Page 13: ...ng at the external battery connector is 54 8 Vdc Then re measure the sense voltage on each of the power supplies Adjust the power supplies such that the sense voltages are equal by adjusting any unit with a lower sense voltage up Once the sense voltages have been balanced connect the voltmeter to the external battery connector and verify the voltmeter reading is 54 8 Vdc NOTE The final value of th...

Page 14: ...nnector 1 480698 0 Mating Pin 350873 3 Wire Gauge 14 18 AWG Fuse GMT 15A Cooper Bussmann or Equivalent Note The fuse is sized to provide full output power from each connection If multiple connections are used the fuse can be re sized to limit current at a lower value 48V RTN 48V FUSE 1 FUSE 2 OUTPUT MODULE A Layout and Polarity ...

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