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SURGE GE PROTECT TECTION ION FI FIRE ALARM RM 1-800-753-2345 Technical Support: 1-888-472-6100 DITEKCORP.com Course Outline About DITEK Corporation What are Surges and Spikes? Causes Effects How Surge Protection Works Surge

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SURGE GE PROTECT TECTION ION – FI FIRE ALARM RM

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Course Outline

About DITEK Corporation What are Surges and Spikes?

  • Causes
  • Effects

How Surge Protection Works Surge Protection Solutions for Fire Alarm Systems

  • Case Study
  • Code References / UL Scopes
  • Selecting the Correct Surge Protection Devices
  • Installation Photos
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This is not the International Symbol for Surge Protection...

Perhap rhaps it it should be be!

DIT DITEK COR CORPO PORA RATION TION continues to lead the industry in the design and manufacturing of electrical and low-voltage su surge rge pr protecti ection

  • n devices

vices. Founded in 1988 and located in Largo, Florida, DITEK manufactures more than 300 different product solutions offering unparalleled protection

  • ptions for the commercial, industrial and residential markets.
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About DITEK

  • 60,000 Sq Ft Manufacturing Facility
  • ISO 9001:2008 Quality Certified
  • Active Participants in Shaping of UL,

IEEE, IEC, ANSI, BICSI and SIA Standards

  • Tampa Bay Times Top Workplace 2014
  • Dedicated Regional Account Managers

Supporting the US, Canada, Europe and Latin American Markets

  • Technical Support Available 24/7
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Proudly Made in the USA

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What are Surges and Spikes?

Surges s and Spik ikes are unexpe pect cted, d, temporar rary y and uncont ntrolle led d increas reases es in current nt or voltage in an electric ical al circuit. uit.

They can be present on any metallic conductor. They can damage, degrade and even destroy electrical and electronic equipment. Surges are the most common cause of equipment damage and destruction.

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What Causes Surges and Spikes?

EXTERNAL CAUSE INTERNAL CAUSE

Lightn tnin ing g – a direct hit, usually catastrophic Proxim imity ty Strikes es – lightning strikes several miles away causing large voltage surges along transmission lines Utilit ity Grid Switchin ching – utility companies switching transmission lines from one supply system to another Brownouts nouts / Black ckout

  • uts

s – under voltage or voltage sag followed by a surge or spike Inducti uctive e Loads – the switching

  • n and off of electric motors

inside or outside a facility, such as HVAC systems, refrigeration equipment, pumps and CNC machines Mechan hanical cal Failures ures – components of the electrical distribution system failing Human n Error– accidental induction of AC power on low voltage system circuits

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What Causes Surges and Spikes?

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What Causes Surges and Spikes?

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Effects of Surges and Spikes

DEGRAD RADATION TION Gradual deterioration of internal circuitry

  • Premature equipment failure

DESTR TRUCTION CTION Instantaneous loss of expensive equipment

  • Electronics, motors, controllers, etc.

DOWNTI TIME Loss of productivity and revenue

  • Loss of critical data and information
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How Surge Protection Works

Initial Surge Surge Protector Response Surge Prot

  • tecti

ction

  • n works

s by simpl mply diver erting ting excess ess volta tage ge and curr rrent nt safel ely to earth ground d before

  • re it re

reaches hes cri ritica ical equipm pmen ent! t!

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How Surge Protection Works

Surge Protective Device

Normal Service Voltage DC/AC Initial ial Surge Surge Clam amped ed

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Surge Protection Applications

DITEK manufactures a complete line of surge protection products to meet the needs of our target markets:

 IP Video / CCTV Systems  Fire Alarm Systems  Networking & Voice Communications  Access Control & Intrusion Systems  Commercial, Industrial & Residential AC Power

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Fire Alarm Surge Protection

Is downtime an option in your life safety installations?

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Code References

NFPA A 72 - 2013 , Chapt pter 12 – Circuits uits and Pa Pathw hways ys

12.2. .2.4.2 4.2 All non-power-limited and power-limited signaling system circuits

entering a building shall be provided with transient protection.

NFPA A 70 Na Natio ional al Electr trical ical Code de – 2014

Ar Article cle 760.3 0.32 Non-power-limited fire alarm circuits and power-limited fire

alarm circuits that extend beyond one building and run outdoors shall meet the installation requirements of Parts II, III and IV of Article 800 and shall meet the installation requirements of Part I of Article 300.

Informat

  • rmational

ional Not

  • te:

e: An example of a protective device suitable to

provide protection is a device tested to the requirements of ANSI/UL 497B, Protectors for Data Communications.

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Surge Protection UL Scopes

UL 1449 4th

th Editio

ion– Surge Prot

  • tectiv

ective Devices es

These requirements cover Surge Protective Devices (SPDs) designed for repeated limiting of transient voltage surges as specified in the standard on 50 or 60 Hz power circuits not exceeding 1000 V.

UL 497A – Seconda dary y Prot

  • tect

ectors s for Communi unication ation Circuits uits

These requirements cover secondary protectors for use in single- or multiple-pair type communications circuits that are intended to be installed in accordance with Article 800 of the National Electrical Code ANSI/NFPA 70.

UL 497B – Isolated d Loop Circui uit Prot

  • tectors

These requirements cover protectors for data communications and fire alarm circuits.

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Fire Alarm Surge Protection

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Parallel vs. Series

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DTK-120HW

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DTK-120HW

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DTK-120HW

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DTK-120SRD

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Remote Monitoring

SPDT Form 1C contact circuit rated 120V/0.5A

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Multi-Stage vs. Single Stage

Gas Discharge Tube (GDT) Silicon Avalanche Diode (SAD) Metal Oxide Varistor (MOV) 20,00 ,000 0 Am Amp Sur urge ge Cur urrent rent Rating ng 2,000 000 Am Amp Sur urge ge Cur urrent rent Rating ing

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2MHLP-F vs. 2MHLP-B

Opens Circuit when compromised Shorts to Ground when compromised

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Field Replaceable Design

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DTK-TSS Series

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Installation Photos

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Installation Photos

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Installation Photos

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Installation Photos

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Best Practices

It is imper erati ative e that at surge ge protecti tection

  • n is inst

stalled alled per the guideli delines es set forth rth by the manufac facturer turer. . Improp roperly erly insta talled lled devices es will ll no not perform

  • rm as int

nten ended ed and nd cons nseq equently, uently, will l not prote

  • tect

ct the equipm ipmen ent. t.

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Installation Rule #1

The conductor tor length gth between een the surge ge protecti tective ve devic ice e (SPD) SPD) and nd the equi uipmen pment t be being ng protec

  • tected

ted should uld be be a minimum nimum of 3 f feet t in lengt gth to allow

  • w enough

gh time me for the SPD D to react.

  • ct. The conductors

ctors can be greater eater than n 3 f feet t as long g as they y are isolated lated and are not subjec jected ted or directly ectly exposed

  • sed to

inter ernally ally- or externally ternally-gener generated ated transient ansient voltage tage spikes kes and/or

  • r surges.

ges.

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Example - Incorrect

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Example - Correct

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Installation Rule #2

The use of a groundin nding g bus bar is strong

  • ngly

ly recomm mmend ended ed as a means ns of terminating erminating SPD D ground und wires es to existin isting g electrical ctrical grounding unding leads.

  • ds. This

s will l ens nsure ure a s solid lid mecha hanic nical l connection ction of all groundi unding ng wires.

  • es. The use of twist

ist-on

  • n wire

e connect ctor

  • rs

s (aka ”wire nuts”) is not recomm mmend ended ed for term rminat ination ion of SPD D ground nd wires es to existing isting electri ctrica cal l grounding unding leads.

  • ds. Twist

st-on

  • n wire

e conn nnect ctor

  • rs

s can n add resista sistance, nce, may become me loose se and/or /or corroded

  • ded over

r time, me, and can also

  • unnecess

essarily arily exten end d the length gth of the groundi unding ng conduct ctor

  • r.

. This s would ld degra rade de the performanc

  • rmance

e of the SPD D due to the lack of a s shor

  • rt,

t, low imped edance ance ground und path.

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Example - Incorrect

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Example - Correct

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Installation Rule #3

When installing multiple SPD’s and terminating to a common ground, und, a dedicat ated ed groun und wire re ran from m each individ vidual ual SPD D to a common mon grounding unding bu bus ba bar is stron

  • ngly

gly recommen

  • mmended.

ed. “Daisy-chaining” multiple SPD ground wires together via the SPD D grounding nding termi rminals nals or by using ng twis ist-on

  • n wire

e connect ctor

  • rs

s is is not recommende

  • mmended

d as this is increases eases the resis sistanc tance e and ext xtend ends s the lengt gth of the ground nd path.

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Example - Incorrect

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Example - Correct

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Installation Rule #4

Always ys make sure re that at the field ld wirin ring g (unpr protect ected ed wires) es) and the protect ected ed wiring ing occupy separat arate e conduit uit feeds.

  • s. When

unprotect ected ed and protect ected ed wires es occupy the same me conduit, uit, surge ge energy rgy can be induced ed on to the protect ected ed wiring ring and comple letely ely bypass ss the surge rge protectiv ective device. e.

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Example - Incorrect

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Example - Correct

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Installation Rule #5

Whenever er possible, sible, Surge ge Protectiv ective e Devices es should uld not be inst stalled alled insid side e of the Fire re Alarm rm Contr ntrol

  • l Pa

Panel.

  • el. A c

catast astrophic

  • phic

failure ure of the SPD D could resu sult lt in resi sidual ual physic ical al damage age to the circuit uit board d and/or

  • r wiring

ing inside ide the FACP CP. **This is is a recommen

  • mmendation,

ation, no not a require uiremen ment** t**

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Example - Incorrect

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Example - Correct

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Ground Resistance

Ground nd resistance istance should ld be 25 Ohms s or less. s. 5 O Ohms ms or

  • r less

s is recommend

  • mmended

ed for opti timal mal performanc

  • rmance.

e.

<5 ohms preferred

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Measuring Ground Resistance

Ground nd Resistance istance Clam amp Met eter er Digital ital Three ee Pole e Earth th Test sting ing Kit

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Grounding Reference

Electrical Service Ground Grounded Building Steel Local Electrical Ground Dedicated Ground Rod Do not reference metallic water pipes. PVC is used when repairing or replacing pipes and since it is non-conductive, ground reference will be lost.

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Inspecting Surge Protection

Preventative maintenance inspections should be conducted monthly and immediately following local lightning strikes. For AC power surge protectors, inspection involves verifying that all LEDs are lit. If an LED is out, the unit is compromised or has self-sacrificed, and needs to be replaced. For low voltage surge protectors, the device will either short to ground or open the circuit, depending on the specific model, when it has self-sacrificed.

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Web Portal

Register at www.ditekcorp.com A&E Specifications CAD Drawings Available as PDF and DWG Technical White Papers Application Diagrams

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Contact Information

Websi bsite: e: www.ditekcorp.com DI DITEK K Sales les Team: am: 1-800 800-753 753-2345 2345 Onlin line Chat at Servi vice ce at www.dit .ditek ekco corp. rp.com com 24/7 Tech ch Suppor pport: t: 1-888 88-472 72-6100 00