Installation. Symmetra MW. 400 kw 480 V. UPS Summary UPS Summary. Normal Normal X017 X012 X008A X014A X014B X013 X008B X011 X405 X010 X007 X021

Transcription

1 X008B X010 X007 X021 X022 X012 X008A X014A X011 X405 X013 X017 X014B UPS Summary UPS Summary Installation Symmetra MW 400 kw 480 V

2

3 Contents Safety...1 IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS SAVE THESE INSTRUCTIONS Symbols used in this guide Installation safety System Overview...3 UPS Serial number Electrical Installation...5 Typical Wiring Principle Power wiring overview External disconnection switches Input/Output wiring precautions Dual or Single Utility System Converting to a single utility system Top Cable Entry (Default) Battery cable connections (top cable entry) Ground and AC cable connections (top cable entry) Bottom Cable Entry Preparing for Battery cable connection (bottom cable entry). 14 Battery cable connections (bottom cable entry) Ground and AC cable connections (bottom cable entry) Communication Cable Overview Symmetra MW 400 kw 480 V Installation C i

4 Relay Board (Optional) Location of optional Relay Board Communcation cables with optional Relay Board Relay Board functions Specifications LowImpedance/HighImpedance Grounding Lowimpedance grounding Highimpedance grounding Electrical Specifications Installation planning data AC input DC input AC output AC Input Bypass SSW Heat dissipation s Table 2 Table (National Electrical Code) Recommended cable, bolt, and lug sizes Torque specifications Required Breaker Settings Input and upstream breakers minimum settings Output and downstream breakers minimum settings General Specifications 480 V ii Symmetra MW 400 kw 480 V Installation C

5 Safety IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS SAVE THESE INSTRUCTIONS This guide contains important instructions for SYMF400KG that should be followed when handling the UPS, Battery Enclosures, and Batteries. Symbols used in this guide WARNING! Indicates an electrical hazard, which, if not avoided, could result in injury or death. CAUTION! Indicates a hazard, which, if not avoided, could result in injury or death. Indicates important information. Indicates that more information is available on this subject in a different section of this manual. See also Indicates that more information is available on the same subject in a different manual. Main Protective Earthing Terminal symbol. Ground symbol. Symmetra MW 400 kw 480 V Installation C 1

6 Safety: IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS Installation safety EPO Press the EPO (Emergency Power Off) button to switch off all AC and DC power supply to connected equipment in the room. The EPO is typically located on a wall in the room in which the UPS is installed. See Communication cable overview section for information on how to wire the UPS to the EPO. WARNING! Before starting installation, check and test that all AC and DC power source breakers are in open position. WARNING! Only personnel trained in the construction and operation of the equipment, and the electrical and mechanical hazards involved, may install or remove system components. CAUTION! Do not use High Voltage Testing Equipment. This equipement will destroy the electronic circuits in the unit. CAUTION! The system is equipped with an optional autostart function, enabling the system to start without any warning when power is applied. CAUTION! All wiring must be in accordance with applicable national and/or local electrical codes. This unit contains components that are sensitive to electrostatic discharge (ESD). Follow proper ESD procedures to avoid severe damage to electronic components. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the Installation Manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his own expense. 2 Symmetra MW 400 kw 480 V Installation C

7 OFF ON EMO System Overview UPS Serial number The serial number is stated on the type label behind the finishing panel above the display unit. Remove finishing panel to see serial number. UPS 2032 mm/80 in 2114 mm/83 in 1067 mm/42 in Weight: Without Power Modules: 2122 kg/4669 lb With Power Modules: 2463 kg/5419 lb Symmetra MW 400 kw 480 V Installation C 3

8

9 Electrical Installation Typical Wiring Principle Power wiring overview See also See separate guide on parallel systems for wiring overview in parallel systems. AC Mains Input Lugs 480 V, 3PH, 3W & GND Q1 Q5 2 2 Battery Breakers Battery 1 Battery 2 6 UPS 8 SSW Q7 Q8 External Battery Q2 KK Q3 5 KK 5 5 LBB KK V, 3PH, 3W & GND Output Load Lugs SOURCE AND AC CABLING MUST BE 480 VOLT, WYE CONNECTED, 3 PHASE, 3 WIRE + GROUND (CONTACT APC IF OTHER). DASHED LINES BETWEEN UNITS ( ) REPRESENT AC/DC CABLING PROVIDED BY OTHERS. ALL AC CIRCUIT BREAKERS ARE 100% CONTINUOUS DUTY RATED WITH 24 VOLT DC SHUNT TRIPS AND 2A/2B AUXILIARY CONTACTS. 4. Q7, Q8: DC RATED DISCONNECT WITH 24 VOLT DC UNDER VOLTAGE RELEASE (UVR) AND 2A/2B AUXILIARY OPTIONAL COMPONENTS SEPARATE CONDUITS. TWO WIRE + GROUND UPS INPUT AND OUTPUT CONDUCTORS MUST BE IN SEPARATE AMPERE RATINGS. UPS AND STATIC BYPASS WITHSTAND 200,000 SYMMETRICAL AMPERES. INSTALLATION MUST COMPLY WITH ALL APPLICABLE NATIONAL AND LOCAL CODES. Symmetra MW 400 kw 480 V Installation C 5

10 Electrical Installation: Typical Wiring Principle External disconnection switches WARNING! The UPS has no internal manual disconnect devices to switch off external AC (Q1 and Q5) and DC (Q7 and Q8) input power. Ensure that disconnection devices are available as separate components for this installation. The installer must provide each external disconnection device for this UPS system with labels displaying the following text: Isolate the Uninterruptible Power Supply (UPS) as instructed in the User Guide before working on circuit. Input/Output wiring precautions WARNING! Only personnel trained in the construction and operation of the equipment, and the electrical and mechanical hazards involved, may install or remove system components. WARNING! Supply the UPS from a dedicated, grounded 3wire Wye service. CAUTION! All wiring must be in accordance with applicable national and/or local electrical codes. Use only ULapproved cable lugs. Use only ULapproved cables and cable lugs. Use only stranded copper conductors. Refer to National Electric Code for wiring and protection. Refer to Recommended cable, bolt and lug sizes. 6 Symmetra MW 400 kw 480 V Installation C

11 Dual or Single Utility System The UPS is designed for both dual and single utility installations and is initially configured as a dual utility system. Follow the procedure Converting to a single utility system to convert to a single utility system. The illustrations on the following pages show dual utility systems. Electrical installation procedures are applicable to both dual and single utility systems. However, in single utility systems, AC IN cables must be connected to either normal power (utility 1) or bypass power (utility 2). Symmetra MW 400 kw 480 V Installation C 7

12 X008A X008B X010 X007 X021 X022 X012 X011 X013 X014A X405 X017 X014B Operation/Configuration Ambient Temperature: 36 o F Electrical Installation: Dual or Single Utility System Converting to a single utility system Top view of busbars 170 L1 IN L2 IN L3 IN L3 IN L2 IN L1 IN L3 OUT 73 L2 OUT L1 OUT Side view of normal power utility 1 UPS Summary L1 IN L2 IN 51 L1 IN L1 OUT L3 IN 52 L2 IN L2 OUT 53 L3 IN L3 OUT Connect L1, L2, and L3 in utility 1 to L1, L2, and L3 in utility 2 using the (3) busbars Mount the busbars with the open angle towards the front of the enclosure (see Top view of busbars). Follow the connection procedures in the rest of this section, but connect AC IN cables to either utility 1 or utility 2 instead of both as instructed in the procedure. 8 Symmetra MW 400 kw 480 V Installation C

13 X008A X008B X010 X007 X021 X022 X012 X011 X013 X014A X405 X017 X014B Operation/Configuration Ambient Temperature: 36 o F Top Cable Entry (Default) Top view of top cover Hole distance AC+DC Cable lug 1.75 in / mm 1.89 in / mm Busbar 1.75 in / mm M12 thread UPS Summary L2 IN L3 IN L3 IN L2 IN L1 IN L3 OUT L2 OUT L1 OUT L1 IN 51 L1 IN 72 L1 OUT L1 IN 52 L2 IN 52 L2 IN 73 L2 OUT 53 L3 IN 53 L3 IN 74 L3 OUT Utility 1 Utility 2 Loosen the 8 bolts in the top cable entry cover and remove top cover. No drilling or cutting should take place over the top of the UPS. Drill holes for conduits in areas shown. Refit the covers and install the conduits. Symmetra MW 400 kw 480 V Installation C 9

14 Electrical Installation: Top Cable Entry (Default) Battery cable connections (top cable entry) WARNING! Make sure that the battery breakers are open (OFF) prior to running the cables. CAUTION! Refer to the battery manufacturer s installation manual. CAUTION! The minimum DC voltage rating of the battery supply overcurrent protective device that should be installed near the battery supply is 500 V. Overcurrent protection for the battery circuit is required by code. 10 Symmetra MW 400 kw 480 V Installation C

15 X008A X008B X010 X007 X021 X022 X012 X011 X013 X014A X405 X017 X014B Operation/Configuration Ambient Temperature: 36 o F Electrical Installation: Top Cable Entry (Default) Hole distance AC+DC Cable lug 1.75 in / mm 1.89 in / mm Busbar 1.75 in / mm M12 thread UPS Summary BAT2+ BAT1 BAT1+ BAT2 Side view of BAT 1+/ Side view of BAT 2+/ Feed the battery cables through the conduits. Connect battery cables to BAT 1+ and BAT 1. Connect battery cables to BAT 2+ and BAT 2. Symmetra MW 400 kw 480 V Installation C 11

16 X008A X008B X010 X007 X021 X022 X012 X011 X013 X014A X405 X017 X014B Operation/Configuration Ambient Temperature: 36 o F Electrical Installation: Top Cable Entry (Default) Ground and AC cable connections (top cable entry) Side view of AC OUT L1 OUT L2 OUT Cable lug Hole distance grounding 1.75 in / mm 1.81 in / mm Busbar 1.75 in / mm M10 stud L3 OUT UPS Summary Side view of utility 1 L1 IN L2 IN L3 IN L1 IN L2 IN L3 IN L1 OUT L2 OUT L3 OUT Output circuit grounding bar Utility 1 Utility 2 Feed the AC and ground cables through the conduits. Connect the ground cables as illustrated. Connect AC IN cables in the left (normal power utility 1) and right (bypass power utility 2) side of AC IN. Connect AC OUT cables as illustrated. 12 Symmetra MW 400 kw 480 V Installation C

17 X008A X008B X010 X007 X021 X022 X012 X011 X013 X014A X405 X017 X014B Operation/Configuration Ambient Temperature: 36 o F Bottom Cable Entry Top view of bottom cover. Hole distance AC+DC Cable lug 1.75 in / mm 1.89 in / mm Busbar 1.75 in / mm M12 thread Top view of UPS. 170 L2 IN L3 IN L3 OUT L2 OUT L1 IN L3 IN L2 IN 170 L1 OUT UPS Summary 53 L1 IN L3 OUT L1 OUT L1 IN 53 L1 IN 53 L1 IN 74 L1 OUT 52 L2 IN 52 L2 IN L3 IN 51 L3 IN 51 L3 IN 51 L1 IN 53 L3 IN L2 OUT L3 OUT Top view of UPS after busbars have been moved. Utility 1 Utility 2 Symmetra MW 400 kw 480 V Installation C 13

18 Electrical Installation: Bottom Cable Entry Loosen the bolts of the bottom cable entry cover and remove. No drilling or cutting should take place inside the UPS. Drill holes for AC and DC conduits in areas shown. Refit the covers and install the conduits. In the right input side (bypass power utility 2), move grounding busbar 170 to the bottom of the section. In the output side, move grounding busbar 170 to the bottom of the section. Exchange busbars 72 and 74 at AC OUT. Exchange busbars 51 and 53 at AC IN (utility 1 and utility 2). Preparing for Battery cable connection (bottom cable entry) WARNING! Make sure that the battery breakers are open prior to running the cables. CAUTION! Refer to the battery manufacturer s installation manual. CAUTION! The minimum DC voltage rating of the battery supply overcurrent protective device that should be installed near the battery supply is 500 V. Overcurrent protection for the battery circuit is required by code. 14 Symmetra MW 400 kw 480 V Installation C

19 X008A X008B X010 X007 X021 X022 X012 X011 X013 X014A X405 X017 X014B Operation/Configuration Ambient Temperature: 36 o F Electrical Installation: Bottom Cable Entry Top view of UPS. Top view of UPS after busbar replacement. UPS Summary Remove the bent busbars 69 at AC IN. Insert the straight busbars 69 at AC IN in the original positions of the bent busbars. Symmetra MW 400 kw 480 V Installation C 15

20 X008A X008B X010 X007 X021 X022 X012 X011 X013 X014A X405 X017 X014B Operation/Configuration Ambient Temperature: 36 o F Electrical Installation: Bottom Cable Entry Battery cable connections (bottom cable entry) Hole distance AC+DC Cable lug 1.75 in / mm 1.89 in / mm Busbar 1.75 in / mm M12 thread UPS Summary BAT2+ BAT2 BAT1 BAT1+ Side view of BAT 1+/ Side view of BAT 2+/ Feed the battery cables through the conduits. Connect battery cables to BAT 1+ and BAT 1. Connect battery cables to BAT 2+ and BAT Symmetra MW 400 kw 480 V Installation C

21 X008A X008B X010 X007 X021 X022 X012 X011 X013 X014A X405 X017 X014B Operation/Configuration Ambient Temperature: 36 o F Electrical Installation: Bottom Cable Entry Ground and AC cable connections (bottom cable entry) Side view of AC OUT Hole distance grounding L1 OUT L2 OUT Cable lug 1.75 in / mm 1.81 in / mm Busbar 1.75 in / mm M10 stud L3 OUT UPS Summary Side view of AC IN L1 IN L1 IN L2 IN L1 OUT L2 OUT L2 IN L3 IN L3 OUT L3 IN Output circuit grounding bar Feed the AC and ground cables through the conduits. Connect ground cables as illustrated. Connect AC IN cables in the left (normal power utility 1) and right (bypass power utility 2) side of AC IN. Connect AC OUT cables as illustrated. Symmetra MW 400 kw 480 V Installation C 17

22 Communication Cable Overview Symmetra MW 400 kw 480 V Installation C

23 X008A X008B X010 X007 X021 X022 X012 X011 X013 X014A X405 X017 X014B SW1 SW2 SW342 Operation/Configuration J J C 1 NC 3 C 1NO NC 3 C 1NO NC 3 C 1NO NC 3 C 1NO NC 3 C 1NO NC 3 C 1NO NC 3 C 1NO NC 3 C 1NO NC 3 C 1NO NC 3 C 1NO NC 3 C 1NO NC 3 C 1 NC 3 C 1 NC 3 C 1NO NC 3 C 1NO NC 3 NO NO 2 NO J412 Ambient Temperature: 36 o F J412 J100A J100B Relay Board (Optional) Location of optional Relay Board INPUT 1 INPUT 2 INPUT 3 INPUT 4 INPUT5 INPUT 6 INPUT 7 INPUT SW1 SW2 SW342 J100A J100B J412 J412 J408 J404 C 1 NC 3 C 1 NC 3 C 1 NC 3 C 1 NC 3 C 1 NC 3 C 1 NC 3 C 1 NC 3 C 1 NC 3 C 1 NC 3 C 1 NC 3 C 1 NC 3 C 1 NC 3 C 1 NC 3 NO 2 NO 2 NO 2 NO 2 NO 2 NO 2 NO 2 NO 2 NO 2 NO 2 NO 2 NO 2 NO 2 C 1 NC 3 C 1 NC 3 C 1 NC 3 NO 2 NO 2 NO 2 OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4 OUTPUT 5 OUTPUT 6 OUTPUT 7 OUTPUT 8 OUTPUT 9 OUTPUT 10 OUTPUT 11 OUTPUT 12 OUTPUT 13 OUTPUT 14 OUTPUT 15 OUTPUT 16 UPS Summary Symmetra MW 400 kw 480 V Installation C 19

24 Electrical Installation: Relay Board (Optional) Communcation cables with optional Relay Board External Lamp supply V AC or VDC Max. 250V AC 5A 24VDC Shunt trip 20 Symmetra MW 400 kw 480 V Installation C

25 Electrical Installation: Relay Board (Optional) Relay Board functions The Relay Board informs the user of the operation mode, status, and alarm conditions and has 8 ports on the input side and 16 output terminals. Relay ID Name Events that will trigger the alarm Mode Comment K1 Common Alarm Any of the functions below, except relays K8, K9, K10, K11; Inverter section fault; Main PSU fault; System locked in operation mode; Internal memory fault; Internal communication fault. Fail safe Warning K2 Battery voltage out of tolerance DC voltage is too high (shut down); DC voltage is under warning level; DC voltage is low (shut down). Fail safe Warning K3 Mains out of tolerance Mains voltage RMS value is out of tolerance; Mains waveform not accepted (fast detector); Mains frequency is out of tolerance. K4 Bypass out of tolerance Bypass voltage RMS value is out of tolerance; Bypass waveform not accepted (fast detector); Bypass frequency is out of tolerance. K5 Battery condition fault Battery monitor has detected a weak battery; Battery monitor has detected a defective battery. Fail safe Fail safe Fail safe Warning Warning Fault K6 Battery disconnected Battery breaker tripped/open. Fail safe Fault K7 System overload Output load exceeded 100%; Delta Inverter current limiter is active; Main Inverter current limiter is active. K8 Output out of tolerance Output voltage RMS value is out of tolerance; Output waveform not accepted (fast detector); Output frequency is out of tolerance. Fail safe Fail safe Fault Fault K9 operation UPS is running in normal operation. Active on Opr. mode K10 Battery operation UPS is running in battery operation. Active on Opr. mode K11 Bypass operation UPS is running in normal operation/ bypass operation according to AS400/ Novell. Active on Opr. mode K12 Maintenance bypass ON The maintenance bypass switch is active. Active on Opr. mode Symmetra MW 400 kw 480 V Installation C 21

26 Electrical Installation: Relay Board (Optional) Relay ID Name Events that will trigger the alarm Mode Comment K13 Standby operation UPS is in standby operation. Active on Opr. mode K14 Boost charge operation UPS is boost charging the batteries. Active on Opr. mode K15 Fan fault Blocked or faulty fan. Fail safe Fault K16 High equipment temperature or inverter fuse blown Static Switch temperature is high; Main Inverter failure (high temperature or blown fuse); Delta Inverter temperature is high; Magnetics temperature is high; Isolation Transformer temperature is high (optional); Battery temperature is high. Fail safe Warning 22 Symmetra MW 400 kw 480 V Installation C

27 Specifications LowImpedance/HighImpedance Grounding The UPS is easily integrated into either a lowimpedance (solidly) grounded Wye system, or a highimpedance grounded system. In a lowimpedance grounded system (most common), the power source (utility, generator, or UPS) is solidly grounded. In the event of a downstream ground fault, the fault current will have a path back to the source, and the overcurrent device feeding the faulted part of the installation will trip and isolate the fault. In a highimpedance grounded system, the source is grounded with an impedance (grounding resistor). In the event of a downstream fault, the fault current will be limited by the impedance of the grounding resistor. The value of a highimpedance system is its ability to maintain operation with a given system fault to ground, i.e. the overcurrent device will only trip at linetoline faults or double ground faults. For a highimpedance system to provide enhanced power system reliability and availability, a groundfault monitoring/alarm system is required. Lowimpedance grounding For lowimpedance grounding, verify the presence of the copper midpoint bonding jumper. For location of the jumper, see Connecting ground and AC cables (top cable entry) or Connecting ground and AC cables (bottom cable entry). Connect the output circuit grounding electrode conductor to a grounding electrode in accordance with NEC 1999, article Grounding electrode conductor to be supplied by the customer. Highimpedance grounding For highimpedance grounding, remove the preinstalled copper midpoint bonding jumper. For location of the jumper, see Connecting ground and AC cables (top cable entry) or Connecting ground and AC cables (bottom cable entry). Install groundfault detection circuit in accordance with NEC 1999, article Symmetra MW 400 kw 480 V Installation C 23

28 Specifications: LowImpedance/HighImpedance Grounding For highimpedance grounding, the installation must include groundfault detection circuitry. From an external grounding resistor, via a separate conduit, connect a cable to the output circuit grounding bar. 24 Symmetra MW 400 kw 480 V Installation C

29 Electrical Specifications Installation planning data Maintenance Bypass Panel Q3 Q5 Bypass SSW Service (480 V 3 phase, 3wire grounded Wye) Q1 UPS Q2 Output (480 V 3phase, 3wire only) Battery Breaker 1 Q7 Q8 Battery Breaker 2 Batteries The installation is a typical installation including ancillary, which is available from APC. WARNING! Supply the UPS from a dedicated, grounded, 3wire Wye service. WARNING! The UPS has no internal manual disconnect devices to switch off external AC (Q1 and Q5) and DC (Q7 and Q8) input power. Ensure that disconnection devices are available as separate components for this installation. CAUTION! Ensure clockwise phase rotation (L1, L2, L3) of input voltages. CAUTION! AC and DC disconnect switches and overcurrent protection must be included in the installation. Symmetra MW 400 kw 480 V Installation C 25

30 Specifications: Electrical Specifications All wiring must comply with all applicable national and/or local electrical codes. Max. prospective RMS shortcircuit current on input terminals: 200 ka Max. prospective RMS shortcircuit current on DC terminals: 50 ka AC input AC Input Input rating 400 kw/kva Power Factor 1 Input Voltage 480 V Input Frequency 60 Hz Nominal input current (note 1) 496 A Maximum Input Current (note 2) 546 A Input Current Limitation (note 3) 625 A Recommended Cable per phase (notes 4, 6, 7, a, b, c) 2 x 350 kcmil DC input DC Input Nominal Voltage (note 5) I Nom Discharge (note 8) I Max Discharge (note 9) Recommended Cable per pole (notes 4, 6, 7, a, b, c) 2 x 384 V 542 A 638 A 2 x 350 kcmil CAUTION! The minimum DC voltage rating of the battery supply overcurrent protective device is 500 V. 26 Symmetra MW 400 kw 480 V Installation C

31 Specifications: Electrical Specifications AC output AC Output Voltage Current Nom Max (note 11) Recommended Cable per phase (notes 4, 6, 7, a, b, c) 480 V 481 A 601 A 2 x 350 kcmil AC Input Bypass SSW The Bypass SSW is designed to accommodate a continuous overload of 25%. AC Input Bypass SSW Bypass SSW Max Input Current (100% load) 481 A Heat dissipation 45 kbtu/hr (note 10). s 1. Nominal (Nom): Input current based on rated load. 2. Maximum (Max): Input current based on full battery recharge + nominal input voltage + rated load. 3. Current limitation (A) through electronic current limiting is based on full battery recharge + nominal load and 15% input voltage (see Required Breaker Settings ). 4. Input, Output and Battery1 and Battery2 circuit cables shall be run in separate conduits or raceways. Cables shall be rated at 600 V as a minimum. 5. Nominal battery voltage at 2.0 volts/cell. 6. Recommendation: All cables shall be sized in accordance with 2002 NEC FPN No. 4 branch feeder voltage drop of 3%. Voltage drop not considered in above chart. Applicationspecific Input Cable Ampacity may vary from above chart. 7. Equipment Grounding Conductors shall be sized in accordance with Table of the 2002 NEC and shall be installed in accordance with Article 250 Section VI and Section VII of the 2002 NEC. Grounding Electrode Conductors shall be sized in accordance with Article and Table of the 2002 NEC and should be installed in accordance with Article 250 Symmetra MW 400 kw 480 V Installation C 27

32 Specifications: Electrical Specifications Section III of the 2002 NEC. 8. Nominal Battery Discharge current based on rated load, and nominal battery voltage. 9. Maximum Battery Discharge current based on rated load at end of discharge. 10. Heat dissipation calculated at rated load capacity. 11. This current is at 125% of rated load and is electronically currentlimited to a maximum of 10 minutes. This value is only provided so the engineer can ensure that the selected AC output circuit overcurrent device s timecurrent characteristic will support this condition. a. Temperature rating of conductors: 194 o F (90 o C). Reference: Table of NEC, 75 o C column. Use only copper conductors. 167 o F (75 o C) cable terminal connectors assumed. b. Reference: NEC Handbook Consult local codes for possible variations. c. All cable ratings are supplied as guidelines only. These guidelines are recommendations only, and should not be considered substitutes for review and compliance with NEC, national, or local codes. Consult with your licensed engineer for sitespecific applications. 86 o F (30 o C) assumed. Overcurrent protection provided by others. Table 2 Table (National Electrical Code) National Electrical Code and NEC are registered trademarks of the National Fire Protection Association, Quincy, MA. Allowable Ampacities of Insulated Conductors rated 0 Through 2000 Volts, 60 o C Through to 90 o C (140 o F Through 194 o F), Not More Than Three CurrentCarrying Conductors in Raceway, Cable, or Earth (Directly Buried), Based on Ambient Temperature of 30 o C (86 o F). 28 Symmetra MW 400 kw 480 V Installation C

33 Specifications: Electrical Specifications Size Temperature Rating of Cables (See Table 31013) Size 60 o C (140 o F) 75 o C (167 o F) 90 o C (194 o F) 60 o C (140 o F) 75 o C (167 o F) 90 o C (194 o F) AWG or kcmil Types TW,UF Types FEPW,RH,RH W,THHW, THW,THWN, XHHW, USE,ZW Types TBS,SA,SIS,FEP, FEPB,MI,RHH, RHW2,THHN, THHW,THW2, THWN2,USE2, XHH,XHHW,XH HW2,ZW2 Types TW,UF Types RH,RHW,TH HW,THW, THWN, XHHW,USE Types TBS,SA,SIS,TH HN,THHW,TH W2,THWN2, RHH,RHW2, USE2,XHH, XHHW, XHHW2,ZW2 AWG or kcmil Copper Aluminium or CopperClad Aluminium * 12* 10* * 10* /0 2/0 3/0 4/ /0 2/0 3/0 4/ CORRECTION FACTORS Ambient Temp. ( o C) For ambient temperatures other than 30 o C (86 o F), multiply the allowable Ampacities shown above by the appropriate factor shown below Ambient Temp. ( o F) Reprinted with permission from NFPA , National Electrical Code, Copyright 2004, National Fire Protection Association, Quincy, MA This reprinted material is not the complete and official position of the NFPA on the referenced subject, which is represented only by the standard in its entirety. Symmetra MW 400 kw 480 V Installation C 29

34 Specifications: Electrical Specifications Recommended cable, bolt, and lug sizes Cable Size Bolt hole size Hole spacing Lug width Lug P/N (1)(2) Crimping Tool and Dies 400 kcmil 0.5 in/12.7 mm 1.75 in/44.45 mm 1.39 in/35.31 mm Panduit LCD (or equivalent) 500 kcmil 0.5 in/12.7 mm 1.75 in/44.45 mm 1.54 in/39.12 mm Panduit LCD (or equivalent) 600 kcmil 0.5 in/12.7 mm 1.75 in/44.45 mm 1.70 in/43.18 mm Panduit LCD (or equivalent) Manufacturer recommended crimping tool and dies. Manufacturer recommended crimping tool and dies. Manufacturer recommended crimping tool and dies. Cable lugs are not supplied. Torque specifications Torque specifications Bolt Size M8 Bolt Size M10 Bolt Size M12 Bolt Size M14 10 lbfft/13.5 Nm 22 lbfft/30 Nm 37 lbfft/50 Nm 55 lbfft/75 Nm 30 Symmetra MW 400 kw 480 V Installation C

35 Required Breaker Settings The Symmetra MW is a faulttolerant system capable of handling and surviving overloads and internal/external faults. The overload performances and fault clearings are possible when the system meets specified minimum requirements for breaker settings. The settings are specified in the tables below, but some of them can also be found in the Electrical Specification section. The settings are all minimum settings and may not result in a dropout. See also See separate guide on parallel operation for information on required breaker settings in parallel systems. Input and upstream breakers minimum settings Q1, Q5, and any upstream breaker Duration [S] Current [A] Total load [%] Event/Operation < ka Internal fault clearing 647* 130 Overload online Online Online + Max. Battery Charge * Only applicable to Q1 Output and downstream breakers minimum settings Q2 and any downstream breaker Duration [S] Current [A] Total load [%] Event/Operation < ka Internal fault clearing Overload online Overload online Online Symmetra MW 400 kw 480 V Installation C 31

36 Specifications: Required Breaker Settings 18 ka is the maximum peak letthrough current (including safety factor) available during clearing of an internal fault in a 200 kw section or a Power Module. During or after a controlled fault clearing, none of the breakers are allowed to trip on the instantaneous trip setting below the specified value. This is also applicable to the upstream breakers, and a control of the instantaneous trip setting in this part of the installation is required. The maximum peak letthrough current is applicable to utility with prospective shortcircuit currents up to 200 ka. The instantaneous trip setting must not be derated even though the UPS system is derated in system output power. The system size has no influence on the instantaneous trip setting. For derated systems, the APC Application Team provides the correct breaker settings and breaker frame sizes. For upstream breakers not mentioned in the table, the APC Application Team provides the correct breaker settings for online, overload, and trip currents. The following diagram shows a dual utility system in which the upstream breakers are named Q. Correct settings of upstream breaker settings are mandatory. The system can also be configured as a single utility system. Dual Utility Installation Q3 T1 Q Q5 T2 Q Q1 Q2 32 Symmetra MW 400 kw 480 V Installation C

37 General Specifications 480 V Backfeed protection Humidity Builtin in the UPS Max. 95% noncondensing Protection class NEMA 1 Safety Emission and immunity UL 1778 listed FCC part 15, sub part J Class A (conducted/radiated) Symmetra MW 400 kw 480 V Installation C 33

38 APC Worldwide Customer Support Customer support for this or any other APC product is available at no charge in any of the following ways: Visit the APC Web site to access documents in the APC Knowledge Base and to submit customer support requests. (Corporate Headquarters) Connect to localized APC Web sites for specific countries, each of which provides customer support information. Global support searching APC Knowledge Base and using esupport. Contact an APC Customer Support center by telephone or . Regional centers Direct InfraStruXure Customer Support Line APC headquarters U.S., Canada Latin America Europe, Middle East, Africa Western Europe (inc. Scandinavia) (1)(877) (toll free) (1)(800) (toll free) (1)(401) (USA) (353)(91) (Ireland) Japan (0) Australia, New Zealand, South Pacific area (61) (2) (Australia) Local, countryspecific centers: go to for contact information. Contact the APC representative or other distributor from whom you purchased your APC product for Entire contents copyright 2007 American Power Conversion Corporation. All rights reserved. Reproduction in whole or in part without permission is prohibited. APC, the APC logo, and Symmetra are trademarks of American Power Conversion Corporation. All other trademarks, product names, and corporate names are the property of their respective owners and are used for informational purposes only C * C* 05/2007