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1、Safety? Safe!L Safety request:European market: GS-mark (TUV, VDE, ERG, ETS, LGA, EGR,.) North America market: UL mark, CSA mark (cUL mark), NOM.2. Definition of primary/secondary:Electric standpointSafety standpointPrimarySourceSecondaryLoadPrimary circuit: An internal circuit which is directly conn
2、ected to the external supply mains or other equivalent source (such as motor-generator set) which supplies the electric power It includes the primary windings of transformers, motors, other loading devices and the means of connection to the supply mains.1 * Secondary circuit: A circuit which has no
3、direct connection to the primary power and derives its power from a transformer, convertor or equivalent isolation device situated within the equipment.Safety extra-low voltage (SELV) circuits: it shall not exceed 42.4 Vpaek or60Vde.(EN60950)、Low-voltage, Limited-energy (LVLE) circuit: not exceed 30
4、 Vrms. 42.4 Vpeak, or 60 Vde.(ULI 778)3. Temperature with components: (AT, operating at ambient40C max.)31 . Trans Ibnner and the coil of relay:(UL)Class A(105)Class EClass B IClass FClass H(180)ClassN (200)Class R(220)(130)(155)EN6095050657090115UL1778507095110125140* EN60950* ULI 778External surfa
5、ce of equipment which may be touched (EN60950) or Surface subject to casual contact (ULI 778). For each plastic material, account should be taken of data for that material to determine the appropriate maximum temperature rise.33 Capacitor (105 or 85C max.), Wire (use code 1015,105C max.), Power Semi
6、conductor (*), PCB/PWB (Printed Circuit Board/Printed Wiring Board, 130C max.).* For a power-switching semiconductor and the like, the temperature limit on the case is the maximum case temperature recommended by the semiconductor manufacturer.34 Battens (EN5OO91-1-1)At 25”Back-up modeOther modesLead
7、/Acid3015NiCd2515Temperature difference between separate blocks of the battery shall be less than 100 C.* Compliance is checked by measurements under normal ambient temperature and full load conditions.4. User replacement and Hot swappable.Caution: Risk of electric shock. Battery circuit is not isol
8、ated from AC input.Hazardous voltage may exist between terminals and ground. Disconnect powercord from wall receptacle before servicing battery. Batter7 replaceable, but not hot swappable.5. Creepage* (Over surface*) and Clearance* (Through air*).Between primary & secondary EN60950 (Reinforced insul
9、ation) ULI 778-Creepage Clearaiice5 mm1.6 mm4 mm1.6 minPollution Degree 2. (EN60950)1 * Controlled environment: An environment that is a heated, indoor location such as a computer room, office, or a factory floor that is relatively free of conductive contaminants such as carbon dust and the like.(UL
10、I 778)Slot ( 1mm) could be added, then the value for that clearance shall be applied as the value fbr the minimum creepage distance.Please refer to Annex L6. Performance:6-1. (Earth) Leakage current:UPSUPS + LoadEN60950S3.5 mAULI 7780.75 mA6-2. Hi-pot (Electric strength or Dielectric Voltage-Withsta
11、nd test):1 minuteL & N to Earth*Primary to Secondary 本EN609501500 Vac3000 VacUL1778”1240 Vac1240 VacDC voltage is equal to the peak voltage of the prescribed a.c, test voltage.1 * 1000 Vac plus twice rated voltage.Insulation breakdown is considered to have occurred when the current which flows as a
12、result of the application of the test voltage rapidly increases in an uncontrolled manner, i.c. the insulation does not restrict the flow of the current. Corona discharge or a single momentary flashover is not regarded as insulation breakdown.6-3. Grounding impedance:The resistance of the connection
13、 between the protective earth terminal or earthing contact and parts required to be earthed shall not exceed 0.1 Q.6-4. Flammability:94V-0 94Vd 94V.2 (94-5 VA / 94-5VB / 94HB / 94HBF / 94HF-1 / 94HF-2 / 94VTM-0 / 94VTM-1 / 94VTM-2).6-5. Input test: (ULI778)The input current shall not be more than 11
14、0 % of the rated value. I he rated value shall not more than 80 % of the maximum current rating of plug.Ex. NEMA 5-15P, max. current rating of plug is 15 AIts max, rated input current on the marking of UPS is 15 x 0,8 = 12 (A)The allowable max. current under recharging/Reserve/Bypass/Normal mode isI
15、2x 1.1 = 13.2 (A)&6. Battery terminal: (EN60950)Test finger cant short the (+) terminal and (-) terminal of battery at the same lime.6-7. UL497A (fVSS) and backfeed protection: (ULI778)Efiected from November 17, 2000, the telecommunication type connectors and terminals are marked Not for telecommuni
16、cation Network or with the symbol below, otherwise it should be approved by UL497A. And for preventing the additive load leakages to pass through the UPS to the input plug pins when the plug is removed from the walk twopole backfeed protection shall be provided.68. Stability:A unit shall not overbal
17、ance when tilted to an angle of 10 from its normal upright position.6-9. Receptacle and plug: (ULI 778)If the plug rating is more than output receptacle rating, the outlet should be protected by branch type (UL489) of fusc/protector/breakcr which rating is less or equal to outlets rating.Input prote
18、ction is supplementary type (ULI077).6-10. Input earth mark and fuse rating:The wiring tem. nal intended fbr connection of the protective earthing conductor associated with rhe supply wiring shall be indicated by the symbol (iEC417 No. 5019). The indication shall not be placed on screws, or other pa
19、rts which might be removed when conductors are being connected.Marking shall be located on, or adjacent to? each fuseholder (or in another location provided that it is obvious to which fuscholder the marking applies) giving the fuse rated current and, where fiises of different rated voltage value co
20、uld be fitted, the fuse rated voltage.Where fiises with special fusing characteristics such as time delay are necessary, the type shall also be indicated.A fuse and a fuseholder shall have voltage and current ratings acceptable for the circuit in which they are connected.Fuses are not soldered direc
21、tly to the PWB must be identified with their replacement rating.司(, 1)6-1L Class of equipment and connection to the supply: (EN60950) Class I and pluggable equipment ty pe A.6-12. Time constant:Equipment is considered to comply if any capacitor having a marked or nominal capacitance exceeding 0,1 uF
22、 and connected to the external mains circuit has a means of discharge resulting in a time-constant not exceeding I second for pluggable equipment type A. The relevant time-constant is the product of the effective capacitance in microfarads and the efifective discharge resistance in megohms. Alternat
23、ively, during an internal equal to one time-constant the voltage will have decayed to 37% of it original value.6-13. Operator accessible: (EN60950)The operator (user) is permitted to have access to:- Bare parts in SELV circuits.- Bare parts in limited current circuits.- Insulat沁n of wiring in ELV ci
24、rcuits under the conditions specified in 2.L3.6*14. Equipment grounding:There shall be provisions for grounding all dead metal parts of a unit that are exposed or that may be contacted by a person during intended operation or adjustment and that are likJy io become energized as a result of electric
25、malfunction.The equipment-grounding conductor of a power-supply cord shall be connected to the grounding blade of a grounding attacliment plug and shall be connected to dead metal parts within the frame or enclosure by means of a screw not likely to be removed during ordinary servicing not involving
26、 the power-supply cord. An external force applied to the power-supply cord shall not transmit stress to the equipment-grounding connection on the frame or enclosure before the line-voltage connections are broken.6-15. Live heat sinks: (ULI778)A current-carry ing, aluminum heat sink shall be plated,
27、conductive anodized, iridiated or the equivalent at surfaces contacting the solid state component.Otherwise, there should be a marking on heat sink, CAUTION-Risk of electric shock. Heat sinks are live. Disconnect UPS before servicing.； or the equivalent.This requiremeni does not apply to live heat s
28、ink that is not used to conduct current.司(, )6-17. Cautionary marking: (ULI778)The words UCAUI lONn, WARNINGS or “DANGER in a cautionary marking shall be in letters not less than 1/8 inch (3.2 mm) high. The remaining letters in a cautionary marking shall not be less than 1/16 inch (1.6 mm) high.A ca
29、utionary marking shall be:1) Located on a part that cannot be removed without impairing the operation of the UPS; andVisible and legible to the operator during normal operation of the unit.7. Component selection:Generally, if the components are connected or used in primary circuitry/isolation purpos
30、e, they should be approved by related agencies.Ex. Y-capacitor (L-E, N-E), X-capacitor (LN), MOV, fuse, protector, breaker, power .cord, wire, relay, photocoupler, transformer, plastic case, (common, diflerential) choke, inlet, fuse holder, outlet, NTC, TCO, fan, switch, connector and so on.EN60960:
31、 VDE, TUV, or other European agencies.UL1778:UUCSA,orcUL.8. Power rating:EN50091-1-1: rated input/output voltage or voltage range, rated input/output frequency, rated input/output current number of input/output phase, output rated active/apparent powei.UI 1778: input/output voltage, input/output fre
32、quency, input/output current, output volt-amperes and watts (or power factor)CE requirement:Please refer to Annex 2.Annex 1Air gap*:TUVNemkoLi to Lo1.9 mm2.8 mmiNi to No1.9 mm2.8 mmCreepage:PCBTUVNemkoLi to Lo. Ni to No2,5 nun5 mmLi to Ni The air gap or sum of the air gap in each pole shall in accor
33、dance with fable 5 一 Minimum clearance in secondary circuits and using the column headed circuit not subject to transient overvoltage * fbr reinforced insulation at the working voltage that is backfed- Lo to No2.5 mm2.5 millLi to No, Ni to Lo2.5 mm5 mmLi to Ls, Li to Ns5 mm5 mmNi to Ls, Ni to Ns5 mm
34、5 mmLs to NsN/AN/AArea A to Area B2.5 mm5 mmRI, R2, R3, and R4: Through-hole type, each one meets basic insulation ( 1/4 W, 2.5 mm). Generally, for meeting LCC, RI R4$ resistance should be more than 1 MQ. 1500 Vac of higlpot is implemented to the resistor for 1 minute, no smoke or tire occurs during
35、 the test.Bridging resistors: It is permitted io bridge double or reinforced insulation by two resistors in series. They shall each comply with the requirement of clearance and creepage between their terminations fbr the total working voltage across the pair and shall have the same nominal resistanc
36、e value.RLYoRLYoL；Coll ”I RLYaAreo YAnnex 2Subject: CE markingReference: EN50091, Uninterruptible Power Systems (VPS)Part 1: General and safety requirements. Part 2: EMC Requirements.EMI:1. Paragraph 2.4(Conducted emissions) Limits of mains terminal interference voltage,a) UPS tor unrestricted sales
37、 distribution.Table 1 (Rated Output Current Is Less Than 25A).-Class A or B is based on customer requirement. iParagraph 2.5.1 (Radiated emissions) E field.a) UPS for unrestricted sales distribution.Table 3 (Rated Output Current Is Less Than 25A).-Class A or B is based on customer requirement.EMS:3.
38、 Paragraph 3.2 Immunity to electrostatic discharges (IEC801-2 or IEC1000-4-2,ESD). .: Minimum requirement: Level 3Performance criterion : B4. Paragraph 3.3 Immunity to radiated electromagnetic filed (1EC8O1-3 or 1EC1000-4-3, RS). Minimum requirement: Level 2Performance criterion : A5. Paragraph 3.4 Immunity to fast transients (IEC801-4 or IEC1000-4-4, EFT). Minimum requirement: Level 2Performance criterion : A6. Paragraph 3.5 Ininiuiiiiy to surge (1EC801-5 or IEC 1000-4-5, Surge).Under consideration.