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Surge Protective Devices

Installation & Operation Manual

Model 425

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Summary of Contents for 425

Page 1: ...Surge Protective Devices Installation Operation Manual Model 425 ...

Page 2: ...Installation Operation and Maintenance Manual IO 70060 RevC 12 17 2 ...

Page 3: ...unt Diagram Figure 5 Dimensions Weight Table 1 Specifications Voltage Rating Application SPDs on Ungrounded Systems Connecting Optional Form C Dry Contact Audible Alarm Remote Indication Option Figure 7 Leads 6 6 7 7 8 8 8 9 9 9 9 NORMAL OPERATION Green LED Indicator Form C Dry Contact and Audible Alarm Option Maintenance Troubleshooting Service 10 10 10 10 10 INTRODUCTION Industry Nomenclature Ch...

Page 4: ...E TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN DEATH SERIOUS INJURY AND OR EQUIPMENT DAMAGE WHEN USED IN OUTDOOR APPLICATIONS CUSTOMER MUST SEAL THE CONDUIT NIPPLE USING WATERTIGHT FITTINGS NOT INCLUDED TO ENSURE A WATERTIGHT CONNECTION READ THIS MANUAL IN ITS ENTIRETY PRIOR TO INSTALLING Industry Nomenclature Changes In the late 2000 s there were significant nomenclature changes associated with a r...

Page 5: ...0 240V Model 425s have demonstrated 100kA SCCRs Confer to label on unit Simplified Explanation of Operation SPDs sense overvoltage and create a momentary low impedance path to redirect harmful surge energy They reset automatically and wait for the next surge This is similar to the pressure relief valve on a water heater pressure goes up valve opens to relieve pressure and then resets In an electri...

Page 6: ...ater line may be a solution 1 Use voltmeter to check voltages and ensure correct SPD See Data Sheet for specs and wire outs 2 Determine Mounting location weather resistant equipment may be required 3 If SPD has optional Dry Contact Flush Mount Kit or Remote Indicator pre plan their installation See Figure 3 If flush mounting be careful to not drop SPD into wall 4 Remove power from panel source Con...

Page 7: ...Code NEC and applicable local codes V WARNING Type 1 or individual equipment installations may vary Use closest breaker to SPD Locate SPD close to intended breaker Keep Leads Short as Possible Avoid Sharp Bends Rotate Model 425 such that LED indicator is most visible Outdoor installation requires appropriate weather sealing at nipple gasket sealing conduit etc To Protected Loads FIGURE 3 TYPICAL P...

Page 8: ...ndary windings of the transformer supplying the service entrance main or load are configured This includes whether 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 SPDs should be installed per the distribution system not per a load or m...

Page 9: ...s Normally Open does not The contact is rated 250V 5A Higher energy applications require supplemental relaying This option monitors suppression element condition and is not intended for use as phase loss or phase detection monitoring If the Dry Contacts are not utilized insulate lead ends coil and secure Audible Alarm will still function correctly Remote Indication Option This is a supplemental di...

Page 10: ...ting Service Please contact us for any service related issues We want to take care of any problems Quality SPDs withstand severe duty and attempt to protect their load until failure There are electrical anomalies that SPDs cannot protect against These are generally Sustained Overvoltages also known as Temporary Overvoltages TOVs In this context Sustained Overvoltages may be only a few cycles Faile...

Page 11: ...Installation Operation and Maintenance Manual IO 70060 RevC 12 17 11 ...

Page 12: ...taken to ensure accuracy and completeness in this literature ASCO assumes no responsibility and disclaims all liability for damages resulting from use of this information or for any errors or omissions The ASCO and ASCO Power Technologies marks are owned by Emerson Electric Co or its ailiates and utilized herein under license 2017 ASCO Power Technologies All Rights Reserved ...

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