File E133455 Vol. 2 Sec. 29 Page 1 Issued: 2000-05-31 and Report Revised: 2006-02-02 DESCRIPTION PRODUCT COVERED: USR, CNR - Component - Switching Power Supplies, Models NHC3011-5, NHC3011-6, NHC3011-8, NHC3021-5, NHC3021-8, NHC3011-C1004, NHC3011-S117, NHC3011-S119, NHC3011-S121 (All Models maybe provided with suffix G, P or SXXX, where X is any alphanumeric character or blank). ELECTRICAL RATINGS: Input Outputs (dc) Model V A Hz V A NHC3011-5 208-240 20 50/60 24 125 NHC3011-6 208-240 20 50/60 28 107 NHC3011-8 208-240 20 50/60 48 63 NHC3011-C1004 208-240 20 50/60 32-48 62 NHC3011-S117 208-240 20 50/60 32-48 62 NHC3011-S119 208-240 20 50/60 42-58 50 NHC3011-S121 208-240 20 50/60 12-32.5 60 NHC3021-5 208-240 20 50/60 24 125 NHC3021-8 208-240 20 50/60 48 63 ENGINEERING CONSIDERATIONS (NOT FOR FIELD REPRESENTATIVE S USE): Special Considerations - The following items are considerations that were used when evaluating this product. USR/CNR indicates investigation to the U.S. and Canadian (Bi-National) Standard for Safety of Information Technology Equipment, Part 1: General Requirements, CAN/CSA C22.2, No. 60950-1 * UL 60950-1, First Edition, which are based on IEC 60950-1, First Edition. Use - For use only in (or with) complete equipment where the acceptability of the combination is determined by Underwriters Laboratories Inc. The component was submitted by the manufacturer for use in a maximum air ambient of 50C and 70C at 60 percent load and reversed air flow. File E133455 Vol. 2 Sec. 29 Page 2 Issued: 2000-05-31 and Report Revised: 2004-05-18 Conditions of Acceptability - When installed in the end-user equipment, consideration shall be given to the following: 1. These power supplies have been judged on the basis of the required spacings in the Standard for Safety of Information Technology Equipment, Part 1: General Requirements, CAN/CSA C22.2, No. 60950-1 * UL 60950-1, First Edition, which are based on IEC 60950-1, First Edition, Sub-Clause 2.10, which would cover the component itself if submitted for Listing. 2. A suitable fire and electrical enclosure shall be provided in the end use. 3. The terminals and connectors are suitable for factory wiring only. The acceptability of those and the mating connectors and terminal blocks relative to the secure of insulating materials and temperature shall be considered in the end-use product. 4. The terminals and connectors are not suitable for field wiring. 5. These power supplies were evaluated for connection to the TN system wiring. 6. The secondary outputs of all models are considered SELV and at hazardous energy levels. * 7. These power supplies have been evaluated for use in a 50 C ambient and 70C at 60% load. Additional evaluation should be made if the power supplies are intended to be used in a higher elevated ambient. 8. All power isolation transformers and inductors employ a Class 180(H) electrical insulation system. 9. Consideration should be given to measuring the temperatures on power electronic components and transformation windings when the power supply is end-use product. 10. These power supplies have been evaluated for use in Pollution Degree 2 environment. 11. These power supplies shall be properly bonded to the main protective earthing termination in the end product.