Related Manuals for SEI DC-UPS Series
Summary of Contents for SEI 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 301-694-9608 Email Info@seipower.com Http//www.seipower.com...
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Page 2: Table Of Contents
TABLE OF CONTENTS Table 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: Description
DESCRIPTION The SEI DC-UPS series is a compact unit designed to service a wide range of customer equipment requiring battery-backed 48 VDC power. The DC-UPS series comes equipped with up to 750 Watts of rectifier power using parallel 250Watt rectifiers for reliability. The distribution is provided on the right side of the unit. -
Page 4: Technical Specifications
TECHNICAL SPECIFICATIONS SEI-250 Electrical Specifications Input Voltage 120 +10/-15% VAC Frequency 50-60 Hz Current 3 amps Max Output Voltage 42-56VDC Current 4.5 amps Mechanical Dimensions Width 19.00 Inches Depth 5.00 Inches Height 14.00 Inches Weight 32 lbs SEI-500 Electrical Specifications... -
Page 5: Environmental Specifications
0 °C to +40 °C Operating -20 °C to +50 °C Storage Humidity 0-95% non-condensing Thermal Load SEI-250 190 BTU/hr max SEI-500 380 BTU/hr max SEI-750 570 BTU/hr max SAFETY INFORMATION Always insure that the person assigned to the job can perform the job safely. -
Page 6: Installation Instructions
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 procedures that may be required, including an RMA number in the event that the unit has to be returned to the factory for repair. - Page 7 • The SEI DC-UPS weighs between 32 and 36 lbs, depending upon the model. • The SEI DC-UPS is designed to mount to a rack or wall without further requirements for additional mounting kits. For wall mounting, a user supplied 3/4- inch plywood backboard or equivalent is required.
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Page 8: Startup And Checkout
• Install the provided battery fuse and fuse holder cap. The fuse holder is on the right side panel of the SEI-250. The fuse holder is on the left side panel of the SEI-500 and SEI-750. -
Page 9: Theory Of Operation
The rectifier converts AC input power to regulated DC output power. Each DC-UPS rectifier 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... - Page 10 LED Indicators There are two LED indicators on the front of the unit; Battery Charge Status and Battery Test Status. The functions of these indicators are as follows: Battery Charge Status: Manual Battery Test Switch –Push to Test Constant Green – Fully Charged Flashing Green –...
- Page 11 Remote Alarm Contacts The DC-UPS includes external alarm contacts to provide the ability to remotely monitor the status of the unit. These alarms will indicate either an AC Fail or a Battery Test Fail condition. Both normally open and normally closed contacts are provided to suite the user’s external monitoring circuitry.
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Page 12: Repair And Maintenance
REPAIR AND MAINTENANCE Repair and Maintenance The SEI DC-UPS is engineered to operate unattended and with low maintenance overhead for extended periods of time. Although the electronics within the DC-UPS require no routine maintenance, the battery charge voltage may drift with time and operating temperature. - Page 13 Note: When setting sense voltages, always adjust the potentiometer until the sense voltage reading changes, and then set it to the desired voltage. Additionally, anytime one power supply is adjusted, all other power supply sense voltages must be re-checked. 4. Once the sense voltages have been balanced, connect the digital voltmeter to the external battery connector.
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Page 14: Output Module -A
Appendix Output Module –A The –A version output module contains two individually fused TYCO/AMP Mat-N- Lok connectors. Mating Connector: 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.
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