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Installation Procedure

Notes

Please read the entire installation manual before installing this SPD. Carefully 

unpack the SPD, removing all packaging material. Inspect for any signs of damage 

that may have occurred during shipment. If any damage is found, stop installation 

and contact LEA International.

The SPD should only be installed by a licensed electrician. 

All local and National Electric Codes must be observed. 

Verify the voltage configuration on the SPD label matches the actual system voltage 

configuration of service point.

For optimal SPD performance, verify that earth ground resistance is less than 25 

ohms (per NEC).

Before installation, shut off power to prevent accidental electrical shock or injury.

Make sure all conductors are sized appropriately for this SPD.

Mounting

The SPD should be mounted as close as possible to the connection of service point. 

The SPD is mounted using the four mounting holes located near the enclosure 

corners.

Electrical conductors should enter the top of the SPD enclosure, or on either side 

near the top of SPD enclosure. 

Electrical conduit should be of sufficient size per NFPA 70 and National Electrical 

Code. For optimum SPD performance, conduit with no sharp bends.

Conductor Size

Terminal Block

The lugs accept phase and Neutral conductors #8 to #1/0 AWG, 

the Neutral and Safety Ground accept #8 to #1/0 AWG. 

All conductors recommended to be insulated stranded copper greater than #6 

AWG diameter. 

Disconnect 

The disconnect switch lugs accept phase conductors #10 to # 4 AWG, 

the Neutral and Safety Ground accept #8 to #1/0 AWG. 

All conductors recommended to be insulated stranded copper greater than #6 

AWG diameter. 

4

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Summary of Contents for LS Plus 300

Page 1: ...ION AND DESIGN IN THIS DOCUMENT IS THE PROPERTY OF LEA INTERNATIONAL ALL RIGHTS RESERVED REV DATE DRAWN CHECKED ALL DIMENSIONS IN INCHES UNLESS OTHERWISE SPECIFIED CAGE TITLE A ENG APPD PROJ APPD PROJECT NO MATERIAL FRACTIONS ANGLES TOLERANCES SIZE SCALE PAGE OF THIRD ANGLE PROJECTION PRODUCT CATEGORY ACL 30992 10701 Airport Drive Hayden ID 83835 USA 1 208 772 8515 FAX 1 208 762 6117 800 882 9110 ...

Page 2: ...2 ...

Page 3: ... support with any questions concerning the voltage configuration prior to installation and application of power Perform such work only after reading and understanding all of the instructions contained in this manual Beware of potential hazards wear personal protective equipment and take adequate safety precautions Before performing visual inspections tests or maintenance on the equipment disconnec...

Page 4: ... conductors are sized appropriately for this SPD Mounting The SPD should be mounted as close as possible to the connection of service point The SPD is mounted using the four mounting holes located near the enclosure corners Electrical conductors should enter the top of the SPD enclosure or on either side near the top of SPD enclosure Electrical conduit should be of sufficient size per NFPA 70 and ...

Page 5: ...ground system to the Safety Ground lug Tighten all connections to the recommended torque value Remote Alarm Connection The SPD offers one set of dry contacts for remote alarm monitoring These screw terminal connections are located on the PC board as shown on Pages 8 or 10 The three connections are labeled NC Normally Closed NO Normally Open and C Common Remote Alarm Contact Maximum Ratings 125 Vdc...

Page 6: ... circuit is enabled A red LED indicates the Audible Alarm has been silenced and serves as a reminder that the SPD needs to be serviced Audible Alarm Disable button Press to turn off the audible alarm The Alarm Disabled LED will turn red and serves as a reminder that the SPD needs to be serviced If the SPD has been severely damaged disconnect power to the SPD using the circuit breaker or disconnect...

Page 7: ... OFF the Alarm Disabled Light Audible Alarm Disable Button Turns OFF the Alarm and Illuminates the Alarm Disable Light TVSS Status Indicator Light Illuminated Green Indicates Normal Operation with All Protection Modes Functioning Light Illuminated Red Indicates SPD Needs Replacement 7 1 Please Note LS Plus 300 shown without the Disconnect Switch The Operation of the Surge Counter and Audible Alarm...

Page 8: ... 368 mm 21 9 16 548 mm Use 3 8 10 mm Mounting Hardware Mechanical Specifications for LS Plus 300 Dimensions for Reference Only 8 Mounting External mounting brackets with 0 41 10 3 mm mounting holes Dimensions 20 X 16 X 6 508 mm X 406 mm X 152 mm Weight 42 lbs 19 kg ...

Page 9: ...placement of Wires for the Remote Alarm Contacts Remote Alarm Contacts Common Normally Open Normally Closed Contact is Closed when SPD is Powered and Functional Normal State 3X Torque Specification 4 5 in lbs 0 5Nm Wire Range 24 to 14 AWG 9 NC C NO NC C NO Remote Alarm Contacts NO Contact Open with Power OFF or SPD Requires Replacement Remote Alarm Contacts NC Contact Closed with SPD powered and F...

Page 10: ...21 9 16 548 mm Use 3 8 10 mm Mounting Hardware Mounting External mounting brackets with 0 41 10 3 mm mounting holes Dimensions 20 X 16 X 6 508 mm X 406 mm X 152 mm Weight 43 lbs 19 5 kg Mechanical Specifications for LS Plus 300 with Disconnect Switch Dimensions are for Reference Only 10 ...

Page 11: ...ote Alarm Contacts Normally Closed Contact is Closed when SPD is Powered and Functional Normal State 3X Torque Specification 4 5 in lbs 0 5 Nm Common Normally Open Wire Range 24 to 14 AWG Wire Strip Length Neutral Block 0 7 17 4 mm Wire Range 8 to 1 0 AWG 11 NC C NO NC C NO Note Remote Alarm Contacts Change State with Loss of Power Remote Alarm Contacts NO Contact Open with Power OFF or SPD Requir...

Page 12: ...ress Release as Shown to Release Disconnect Handle from the Disconnect Switch to Open or Close the Enclosure Door Lock Out of Enclosure in the OFF Position if Required 1 2 Pull Out Locking Tab to Install Locking Device Install Lock Handle Locking Tab only accepts a Shackle Diameter as shown Lock not supplied by LEA O F F ON 1 12 Disconnect Handle Operation ...

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