APC PML3XS-A surge protector
Contents
1. 5 Restore power to the equipment as required If the SPD is properly installed and functioning the green LED indicators on the display will be lit If you have any questions pertaining to the installation contact your APC representative NOTE Always install the SPD on the LOAD side of the main disconnect APC BRICK PANEL PRODUCTS Surge Protective Device SPD TOY WIRING DIAGRAMS WITHOUT INTEGRAL DISCONNECT Figure 3 Single Phase 3 Wire Grounded PHASE A NEUTRAL H GROUND PHASE C Chasis Ground Figure 4 Three phase 3 or 4 Wire Grounded Wye Installation NOTE The neutral conductor is not present on 3 wire grounded neutral power systems For these systems tie the neutral and ground lugs together PHASE A PHASE B NEUTRAL GROUND PHASE C Chasis Ground OPERATION APC BRICK PANEL PRODUCTS Surge Protective Device SPD OPERATION DANGER HAZARD OF ELECTRIC SHOCK EXPLOSION OR ARC FLASH Apply appropriate personal protective equipment PPE and follow safe electrical work practices See NFPA 70E This equipment must only be installed and serviced by qualified electrical personnel Turn off all power supplying this equipment before working on or inside equipment Always use a properly rated voltage sensing device to confirm power is off Replace all devices doors and covers before turning on power to this equipment Failure to follow these instructi2. SPD OPERATION AUDIBLE ALARM Push the alarm enable disable button to enable or disable the alarm If the green alarm LED is lit the alarm is enabled If the green alarm LED is not lit the alarm is disabled SURGE COUNTER The surge counter displays the number of transient voltage surges since the counter was last reset The counter is battery powered to retain memory in the event of a power loss to the diagnostic display panel To reset the surge counter remove all power and press the small switch located inside the unit on the underside of the diagnostic circuit board near the diagnostic cable connectors This will reset the counter to zero Figure 5 Three Phase Display Panel with Surge Counter Note Three phase model shown g Phase LED s Surge Protective Device Description of www apc com phase LED s Push to Test Bot n de prueba Bouton pousser pour v rifier OK 9 Replace Module Sustituya el m dulo Remplacer le nodule S S 6 On Line diagnostic Counter push buttons Contador Compteur Alarm enable disable os 50 push button Test Mute B AN Surge counter y AN Enable Alarm Alarm LED N 0 Disable Alarm Made in USA Hecho en E U A Fabriqu aux U 8251 0106A ee Surge counter reset switch on diagnostic circuit board APC BRICK PANEL PRODUCTS Surge Protective Device SPD A DANGER HAZARD OF ELECTRIC SHOCK EXPLOSION OR ARC FLASH Apply appropriate personal pro
3. a power system with a short circuit current rating not exceeding 200 000 A Periodic inspection of the state of the status indicator lights on the SPD should be made as part of the preventive maintenance schedule The SPD should be promptly serviced when an alarm state exists For unmanned inaccessible or critical installations the dry contacts should be used to signal an alarm state to the central supervisory system In addition to the preceding items the use of multiple SPDs to achieve redundancy should be considered for critical applications Failure to follow these instructions can result in loss of power or loss of surge protection that can cause injury or equipment damage A APC BRICK PANEL PRODUCTS Surge Protective Device SPD o warnanos C N A CAUTION LOSS OF SURGE PROTECTION During installation into an electrical system SPDs must not be energized until the electrical system is completely installed inspected and tested All conductors must be connected and functional including the neutral The voltage rating of the device and system must always be verified before energizing the surge protective device Any factory or on site testing of power distribution equipment that exceeds the normal operating voltage such as high potential insulation testing or any other tests where the suppression components will be subjected to voltages higher than their rated turn on voltage must be perfor
4. Arc www apc com Surge Protective Devices SPD APC Brick Panel Products Installation and Operation Manual The Brick Panel Product Surge Protective Devices SPD are designed to provide protection at the service entrance PMF2Z A branch panels or other critical locations for today s electrical PMF3XS A equipment The APC SurgeArrest Brick Panel Mount Products have replaceable multi phase modules a display panel with surge PMG3XS A counter and LED status indicators an audible alarm and a PMH3XSLM A NEMA 1 Enclosure PML3XS A PMP2ZS A Compliant with UL 1449 2nd Edition requirements dated PMP3XS A February 9 2007 Retain for future use 1 800 800 4272 www apc com warnes sf APC BRICK PANEL PRODUCTS Surge Protective Device SPD A DANGER HAZARD OF ELECTRIC SHOCK EXPLOSION OR ARC FLASH Apply appropriate personal protective equipment PPE and follow safe electrical work practices See NFPA 70E This equipment must only be installed and serviced by qualified electrical personnel Turn off all power supplying this equipment before working on or inside equipment Always use a properly rated voltage sensing device to confirm power is off Replace all devices doors and covers before turning on power to this equipment Failure to follow these instructions will result in death or serious injury Ne y A CAUTION LOSS OF BRANCH CIRCUIT POWER AND SURGE PROTECTION In the event that the surge protectiv
5. ODUCTS Surge Protective Device SPD UNPACKING AND PRELIMINARY INSPECTION STORAGE A DANGER HAZARD OF ELECTRIC SHOCK EXPLOSION OR ARC FLASH Apply appropriate personal protective equipment PPE and follow safe electrical work practices See NFPA 70E This equipment must only be installed and serviced by qualified electrical personnel Turn off all power supplying this equipment before working on or inside equipment Always use a properly rated voltage sensing device to confirm power is off Replace all devices doors and covers before turning on power to this equipment Failure to follow these instructions will result in death or serious injury SSS Ss Proper installation is imperative to maximize the Brick Pane SPD s effectiveness and performance The installer should follow the steps outlined in this instruction manual to ensure proper installation Read the entire instruction manual before beginning the installation These instructions are not intended to replace national or local electrical codes Check all applicable electrical codes to verify compliance Installation of surge suppressors should only be performed by qualified electrical personnel NOTE SPDs are designed for use on the load side of the service entrance disconnect only Inspect the entire shipping container for damage or signs of mishandling before unpacking the device Remove the packing material and further inspect the d
6. ams without Integral Disconnect OPERA MON col ara LED St tus INGiCAtOrS ui tiras Audible Alai a das Surge COUME dirge idas Diy Contacts iu da ia MAINTENANCE AND TROUBLESHOOTING acere Preventive Maintenance oocooocccccccccccocnconannnononcnncnncconinncannnnnnnnos TROUBIESHOOTING umi idos WARRAN Visca lata E CUSTOMER SUPPOR Tis cia da eee APC BRICK PANEL PRODUCTS Surge Protective Device SPD INTRODUCTION INTRODUCTION Thank you for choosing the APC SurgeArrest PM2Z or PM3X Series Brick Surge Protection Device The APC non modular Surge Protection Device SPD is a high quality high energy surge attenuation system that has been designed to protect sensitive equipment from damaging transient voltage surges Proper installation is imperative to maximize the surge suppressor s effectiveness and performance This manual is to be used as a guide for installing the device Read and understand all information contained in this manual prior to installation The outlined procedures are not intended to supersede local or national electrical codes Check all applicable electrical codes to assure compliance This device must be installed by a licensed electrician The electrician should follow the steps detailed in this manual to ensure proper installation A copy of the installer s invoice detailing the installation of this device is required in order to take advantage of the unit s product warranty The SurgeArrest PM2Z a
7. e elements of the Brick Panel SPD have been damaged i e excessive surge energy power system anomaly etc the surge protective elements can lose their ability to block power system voltage and attempt to draw excessive current from the line This SPD is equipped with overcurrent and overtemperature protection that will automatically disconnect the surge protective elements from the mains should the surge protective elements be damaged The effects of damaged surge protective elements and the subsequent operation of the automatic overcurrent and overtemperature protection must be considered when applying an SPD particularly when critical loads requiring continuity of power or continuity of surge protection are present on the power system The following items should be considered when applying a SPD Tripping of the branch circuit breaker feeding the SPD can occur when the surge protective elements are damaged Do not connect the SPD to a branch circuit feeding a load requiring continuity of power i e central computer or control systems safety critical equipment critical processes or systems etc unless the branch circuit breaker trip characteristic has been coordinated with the overcurrent protection inside the SPD For the purposes of coordination the SPD is equipped with overcurrent protection that will limit the per phase I t en ly and values to 20 kA seconds 7000 A 16 000 A peak and 80 A rms respectively when connected to
8. evice for any obvious shipping damage If any damage is found and is a result of shipping or handling immediately file a claim with the shipping company The device should be stored in a clean dry environment Storage temperature is 40 to 70 C 40 to 158 F All of the packaging materials should be left intact until the device is ready for installation APC BRICK PANEL PRODUCTS Surge Protective Device SPD Ko 07 Yy 1 0 SAFETY LABELS SPD LOCATION CONSIDERATIONS Environment Audible Noise Mounting Service Clearance Equipment Performance English versions of all safety labels danger warning caution are provided The device is designed to operate in an ambient temperature range of 40 to 60 C 40 to 140 F with a relative humidity of O to 95 non condensing Refer to the product catalog for further details on enclosures All SPDs operate normally without reduction in performance when subjected to shock and vibrations described in IEC 60721 3 3 Class 3M4 The device background noise is negligible and does not restrict the location of the installation This device is designed to be surface or flush mounted Refer to the device submittal drawings or the product catalog for typical mounting dimensions and weight Install the Brick Panel SPD in a restricted access area The service clearance should meet all applicable code requirements To obtain the maximum system performance locate the device as c
9. fy that the service entrance equipment is bonded to ground in accordance with all applicable codes Verify that the neutral terminals are grounded to system ground in accordance with all applicable codes Failure to follow these instructions can result in equipment damage A y An equipment ground conductor must be used on all electrical circuits connected to the SPD For the best performance use a single point ground system where the service entrance grounding electrode system is connected to and bonded to all other available electrodes building steel metal water pipes driven rods etc for reference see IEEE STD 142 1991 The ground impedance measurement of the electrical system should be as low as possible and in compliance with all applicable codes for electronics and computer systems When metallic raceway is used as an additional grounding conductor an insulated grounding conductor should be run inside the raceway and sized in accordance with all applicable codes A WARNING INADEQUATE RACEWAY ELECTRICAL CONTINUITY Ground impedance must be as low as possible and in compliance with all applicable codes for electronic and computer systems Install an insulated grounding conductor inside a metallic raceway when the raceway is used as an additional grounding conductor Size the conductor in accordance with all applicable codes Maintain adequate electrical continuity at all raceway connections Do not use
10. g device to confirm power is off Replace all devices doors and covers before turning on power to this equipment Failure to follow these instructions will result in death or serious injury Ne J Inspect the SPD periodically to maintain reliable system performance and continued transient voltage surge protection Periodically check the state of the display LED status indicators Routinely use the built in diagnostics to inspect for inoperative modules 18 TROUBLESHOOTING APC BRICK PANEL PRODUCTS Surge Protective Device SPD Figure 5 Troubleshooting Flowcharts y Red phase LED s lit on Diagnostic Panel START Check Check the power G h LED Sr ADIOS utility feed and hal it And no a Is the voltage wariy eae Red LED s lit and correct levels no Alarm on Is power being supplied to the SPD Is alarm Enable Disable LED on Energize SPD and verify proper connection YES NO Possible diagnostic Possible diagnostic display board failure display board or brick Replace diagnostic P module failure display panel Contact Customer Support Is alarm on NO Is alarm LED on Patch cable is the cable inside the enclosure between the replaceable module s and the back side of the diagnostic display panel Replacement Parts Replacement parts are available For ordering
11. information contact APC Customer Service 1 800 800 4272 Warranty For warranty information about your Surge Protection Device go to the APC Web site www apc com Choose Products and then choose Surge Protection and Power Conditioning Scroll down to Hardwire Surge Suppression Choose your part number from among the three categories listed under Hardwire Surge Suppression A screen containing information specific to your Surge Protection Device is then displayed Click on the Documentation tab to locate the file containing your warranty APC BRICK PANEL PRODUCTS Surge Protective Device SPD CUSTOMER SUPPORT APC BRICK PANEL PRODUCTS Surge Protective Device SPD APC www apc com APC Worldwide Customer Support Customer support for this or any other APC product is available at no charge in any of the following ways e Visit the APC Web site to access documents in the APC Knowledge Base and to submit customer support requests www apc com Corporate Headquarters Connect to localized APC Web sites for specific countries each of which provides customer support information Www apc com support Global support searching APC Knowledge Base and using e support e Contact the APC Customer Support Center by telephone or e mail Local country specific centers go to www apc com support contact for contact information For information on how to obtain local customer support contact the APC representative or other distributo
12. ion and provides overcurrent protection for the connecting conductors The circuit breaker maximum rating should not exceed the ampacity of the connecting conductors Failure to follow these instructions can result in death or serious injury Turn off all power supplying this equipment through the panel circuit breaker before working on or inside the equipment LOCATION OF SPD Install SPDs on the load side of the main overcurrent protection to comply with UL 1449 and the NEC Locate the SPD as close as possible to the circuit breaker being protected to minimize the wire length and optimize SPD performance Avoid long wire runs so that the device will perform as intended To reduce the impedance that the wire displays to surge currents the phase neutral and ground conductors must be routed within the same conduit and tightly bundled or twisted together to optimize device performance Avoid sharp bends in the conductors See Figure 2 Figure 2 Wiring Practice To protected load s age SPD Phase A Phases gt b e Phase B Phase C Neutral Vp00000 o o ia Neutral Neutral bus Ground o000000 Ground Ground bus Interconnect wiring Minimize length Avoid sharp bends 10 ELECTRICAL APC BRICK PANEL PRODUCTS Surge Protective Device SPD SYSTEM GROUNDING CAUTION SYSTEM GROUNDING SPD must be installed on solidly grounded power systems Veri
13. isolating bushings to interrupt a metallic raceway run Do not use a separate isolated ground for the SPD Verify proper equipment connections to the grounding system Verify ground grid continuity by inspections and testing as part of a comprehensive electrical maintenance program Failure to follow these instructions can result in death or serious injury C J APC BRICK PANEL PRODUCTS Surge Protective Device SPD ELECTRICAL INSTALLATION A DANGER CONDUIT LOCATION AND RECOMMENDATIONS SPECIAL ENCLOSURE CONSIDERATIONS Removing and Reconnecting the Communication Patch Cables NEMA 3R Applications Mounting Recommendation HAZARD OF ELECTRIC SHOCK EXPLOSION OR ARC FLASH Apply appropriate personal protective equipment PPE and follow safe electrical work practices See NFPA 70E This equipment must only be installed and serviced by qualified electrical personnel Turn off all power supplying this equipment before working on or inside equipment Always use a properly rated voltage sensing device to confirm power is off Replace all devices doors and covers before turning on power to this equipment Failure to follow these instructions will result in death or serious injury Si The recommended conduit entry is at the bottom of the device enclosure Use a conduit seal that is appropriate for the enclosure rating The communication patch cables are marked with matching phase c
14. lose as possible to the circuit breaker to minimize the interconnecting wiring length For every foot in length of wire approximately 175 volts per foot 6 kV 3 kA 8 20 microsecond is added to the suppressed voltage The suppressed voltage rating is located on the device nameplate and is measured 6 inches from the device terminals according to UL 1449 Second Edition Figure 1 SPD Nameplate Example www apc com PML3XS A Transient Voltage Surge Suppressor Rated Line Voltage 347 600 Vac Frequency 50 60 Hz TVSS Rating 1200 L N 1500 L G 1500 N G 2500 L L Short Circuit Current Rating 200kA 600V Maximum WC EFO9A 8251 0136A ELECTRICAL APC BRICK PANEL PRODUCTS Surge Protective Device SPD ELECTRICAL Voltage Rating Terminals Wire Size and Installation Torque Disconnect Means External Prior to mounting the SPD verify that the device has the same voltage rating as the power distribution system in which it is installed by comparing the nameplate voltage or model number on the SPD with the nameplate of the electrical distribution equipment The specifier or user of the device should be familiar with the configuration and arrangement of the power distribution system in which any SPD is to be installed The system configuration of any power distribution system is based strictly on how the secondary windings of the transformer supplying the service entrance main or load are configured This includes whether
15. may be used 2 Mount the SPD as close as possible to the panelboard being protected 3 Connect the SPD to the panelboard using an approved wiring method The connecting wires should be twisted 1 2 turn for each foot of length together and kept as short as possible do not loop or coil wires to enhance the performance of the device See page 8 for the recommended wire size and installation torque For wiring diagrams see figures 3 and 4 a b C Connect the ground wire to the GROUND bus of the distribution panel Where applicable connect ground to the SPD module Where applicable connect the neutral wire to the SPD module Be sure the circuit breaker is open OFF prior to making any connections of any kind If a circuit breaker or circuit breaker space is not available connect to the electrical panel bus and then to an integral disconnect utilizing the 3M or 10ft tap rule See NEC 240 21 B 1 4 Be sure the disconnect is open OFF and the circuit is de energized before making any connections Connect a wire in conduit to each phase HOT terminal on the LOAD side of a circuit breaker Refer to the markings on the device when connecting the phase neutral and ground conductors Fuses are not recommended for protection unless the fuses are specifically designed for use in an SPD application 4 After all connections have been made reinstall any barriers that have been removed close the door or replace the cover
16. med with the suppressor disconnected from the power source The neutral connection at the SPD must also be disconnected prior to performing high potential testing and then reconnected upon completion of the test Failure to follow these instructions can result in loss of power or loss of surge protection that can cause injury or equipment damage J A IMPORTANT Electrical equipment should be installed operated serviced and maintained only by qualified personnel No responsibility is assumed by APC for any consequences arising out of the use of this material TABLE OF CONTENTS APC BRICK PANEL PRODUCTS Surge Protective Device SPD SurgeArrest Brick PM Series CONTENTS INTRODUCTION a scsnscots calcita lt cables da UNPACKING AND PRELIMINARY INSPECTION cece STORAGE cuina e SAFETY LABELS ah ata eE Aa Ls Dl E A SPD LOCATION CONSIDERATIONS cccccccccccoococonnnnnnnnnnncnnccinicininnns ENVIO Mena tos Audible NolSO cid das MOUNT A O EA ee A A Equipment Performance oococccccccccccnonacononnnnccnnnnnnnaninnnnann nn ncnnno ELECTRICA cana ala Service Voltage Model NUMbeEIS ooooccccioconcccccnonnncnccnonnncnnncnno Terminals Wire Size and Installation Torque Disconnect Meangan er nren tos Locallomor SEDs nE aA E a aA Aa A tees eh SYSTEM GROUNDING irpirisa rrea erronea INSTALLA TO Nucia A OEA EAEE ie Conduit Location and Recommendations WIRING usina metas Soha faa destiny Wiring Diagr
17. nd PM3X Series product lines specify a parallel SPD designed for service entrance and downstream panelboard applications These units provide replaceable brick all included surge protections are embedded in sand and encapsulated into a single brick module surge protection and are available with 80kA and 120kA per phase ratings respectively All APC products are extensively tested according to industry standards as set by IEEE C62 41 and C62 45 for Categories A B and C The connection method for these devices may require several feet of wire Be aware that increased lead length adversely affects clamping voltages Save this manual It includes instructions regarding the product warranty and replacement parts Testing Any factory or on site testing that exceeds the normal operating voltage such as high potential insulation testing or other tests where the suppression components will be subjected to voltages higher than their rated turn on voltage must be run with the suppressor disconnected from the power source For 4 wire TVSS devices the neutral connection at the TVSS must also be disconnected prior to performing high potential testing and then reconnected upon completion of the test Failure to disconnect this surge suppression device and its associated suppression components during elevated voltage testing will result in damage to the suppression components and or other electronic components PACKAGING APC BRICK PANEL PR
18. onnections If any of the cables are removed reconnect the cables as marked Remove screws from the bottom of the enclosure to create drain holes Locate the SPD as close as physically possible to the node equipment to be protected thereby limiting lead length and ensuring lower let through voltages on the protected equipment For every foot of wire length approximately 1 nanosecond of turn on turn off time will be added and approximately 175 volts 6kV 3kA 8 20 microseconds will be added to the clamping voltage 12 INSTALLATION APC BRICK PANEL PRODUCTS Surge Protective Device SPD A DANGER HAZARD OF ELECTRIC SHOCK EXPLOSION OR ARC FLASH Apply appropriate personal protective equipment PPE and follow safe electrical work practices See NFPA 70E o This equipment must only be installed and serviced by qualified electrical personnel Turn off all power supplying this equipment before working on or inside equipment Always use a properly rated voltage sensing device to confirm power is off Replace all devices doors and covers before turning on power to this equipment Failure to follow these instructions will result in death or serious injury WIRING Follow steps 1 5 to make wiring connections 1 Turn off all power supplying this equipment through the Panel Circuit Breaker or Primary Disconnect before working on or inside the equipment For additional protection an integral switch
19. ons will result in death or serious injury _x __ _ _ __z _ ___ OPERATIONS AND The SPD display panel shows the status of the brick module with LED STATUS INDICATORS diagnostically controlled green red LED s If a unit is operating correctly all the phase LED s will be illuminated green To test the integrity of the diagnostics for each phase push the button next to the phase LED s on the diagnostic display The green LED will turn red and the alarm will sound if the alarm is enabled Releasing the phase button will complete the test the red LED will turn back to green and the alarm will shut off If an inoperable condition occurs on any phase the audible alarm will enable and the corresponding phase LED on the diagnostic display panel will illuminate red This indicates that the device needs service by a qualified electrical personnel The audible alarm can be silenced by pressing the alarm enable disable button until a qualified person is able to evaluate and service the SPD Ifthe alarm is silenced the phase LED will remain red The red phase LED will continue to be illuminated until the inoperative condition is cleared When power is applied to the SPD and one or more of the display LED s are red or not illuminated the brick module should be replaced Refer to Maintenance and Troubleshooting on page 18 for proper troubleshooting procedures APC BRICK PANEL PRODUCTS Surge Protective Device
20. or not the transformer windings are referenced to earth via a grounding conductor The system configuration is not based on how any specific load or equipment is connected to a particular power distribution system See Table 1 for the service voltage of each SPD Table 1 Brick Panel SPD Voltage Ratings Standard enclosure is NEMA 1 Terminals are provided for phase line neutral and equipment ground connections The SPD terminals accept a range of 12 to 2 AWG 84 mm copper wire for phase neutral and ground connectors Torque connections to the following values Table 2 Installation Torque Power Connection Terminal Torque W O Disconnect W Disconnect A B C amp N 35 lb in 4N M 50 Ib in 5 7N M Ground 50 Ib in 5 7N M The use of fusible disconnects requires a fuse with a melting characteristic greater than the per phase Clearing I t of the SPD to prevent nuisance operation of the disconnect fuses during a surge Refer to caution statement LOSS OF BRANCH CIRCUIT POWER LOSS OF SURGE PROTECTION on page 2 for further information APC BRICK PANEL PRODUCTS Surge Protective Device SPD ELECTRICAL A WARNING NS UNDERSIZED WIRING USE ONLY CONDUCTORS RATED 30 A OR GREATER The brick panel series SPD is designed for connection to a 30 A or greater circuit breaker The circuit breaker is the intended disconnect means for the SPD without integral disconnect opt
21. rs from whom you purchased your APC product Entire contents copyright 2008 by American Power Conversion Corporation All rights reserved Reproduction in whole or in part without permission is prohibited APC and the APC logo are trademarks of American Power Conversion All other trademarks product names and corporate names are the property of their respective owners and are used for informational purposes only 990 3424 8251 0137B 7 08
22. tective equipment PPE and follow safe electrical work practices See NFPA 70E This equipment must only be installed and serviced by qualified electrical personnel Turn off all power supplying this equipment before working on or inside equipment Always use a properly rated voltage sensing device to confirm power is off Replace all devices doors and covers before turning on power to this equipment Failure to follow these instructions will result in death or serious injury x J DRY CONTACTS The brick panel series SPD s come with dry contacts The connection for the dry contacts is located on the back of the diagnostic display panel lower right corner The dry contacts are 3 position Form C type with Normally Open NO Normally Closed NC and Common COM connections The unpowered state shall be closed between terminals NO and COM This is also the alarm condition The opposite state closed between terminals NC and COM indicates that power is on to the unit and that no alarm condition exists See Table 3 These contacts can be used for remote indication of the SPD s operating status to a computer interface board or emergency management system The contacts are designed for a Maximum voltage of 24 VDC and a maximum current of 2 A Higher energy applications may require additional relay implementation outside the SPD Damage to the SPD s relay caused by use with energy levels in excess of those discussed in
23. this instruction manual are not covered by warranty For application questions contact your APC representative De energize power to the brick panel before installing dry contact wires Care must be taken when installing the dry contact wires because the terminals are on a removal panel or hinged door Avoid the door hinge any disconnect switches and the high voltage areas of the enclosure when routing the wires To avoid the door hinge secure the dry contact wires to the existing wiring harness For removal panels secure the wires to the inside wall of the fixed enclosure Once the dry contact wiring is secured on a non moving point of the enclosure it is the user s responsibility to maintain separation between dry contact wiring and the power wiring in the enclosure Table 3 Dry Contact Configuration Alarm Contact Contact State with Power Removed Terminals NC Open COM Common NO Closed APC BRICK PANEL PRODUCTS Surge Protective Device SPD MAINTENANCE MAINTENANCE AND TROUBLESHOOTING Preventive Maintenance DANGER HAZARD OF ELECTRIC SHOCK EXPLOSION OR ARC FLASH Apply appropriate personal protective equipment PPE and follow safe electrical work practices See NFPA 70E This equipment must only be installed and serviced by qualified electrical personnel Turn off all power supplying this equipment before working on or inside equipment Always use a properly rated voltage sensin
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