Surge Protection Devices (SPDs): Type 1 vs. Type 2 at Saan Mo Ba Talaga Dapat Ilagay Itong mga Ito?

Isang kidlat, isang pitik ng kuryente — kinabukasan, patay na ang TV, router, at board ng aircon. "Pero may AVR naman ako!" ⚡📺

Let's be honest. Sa bahay ng halos bawat Pinoy, may AVR ang ref, may AVR ang TV, at may AVR pa ang computer. Pakiramdam natin, protektado na tayo.

Pero tuwing tag-ulan, pare-pareho ang kwento: kumidlat nang malakas, o bumalik ang kuryente pagkatapos ng brownout — at may nasirang appliance. Minsan ang router. Minsan ang inverter aircon. Minsan ang solar inverter.

Ang dahilan: magkaiba ang trabaho ng AVR at ng surge protection. At sa karamihan ng bahay, ang pangalawa ang wala


Video Credit: Alex PC Tech

Ano ang Surge?

Ang surge ay biglaang pagtaas ng boltahe na tumatagal lang ng microseconds — mas mabilis pa sa kurap ng mata — pero puwedeng umabot sa libo-libong volts.

Saan ito galing?

  • Kidlat — direktang tama o tama sa malapit na poste o linya.
  • Switching ng utility — tulad ng pagbabalik ng kuryente pagkatapos ng brownout.
  • Loob mismo ng bahay o building — pag-on at pag-off ng malalaking motor tulad ng aircon compressor at water pump. Mas maliit ang mga ito, pero araw-araw.


"Pero May AVR Naman Ako, 'Di Ba?"

Ang AVR (automatic voltage regulator) ay ginawa para sa mabagal na pagbabago ng boltahe — halimbawa, kapag bumaba sa 200V ang kuryente tuwing gabi, itinataas nito pabalik sa tamang level. Kapaki-pakinabang 'yan.

Pero ang surge ay tumatagal lang ng microseconds. Hindi ito ang pangunahing trabaho ng AVR — maliban kung may built-in itong surge protection, at kahit ganoon, tingnan ang specs. At kahit pa protektado ang isang appliance na naka-AVR, ang buong wiring at ang ibang appliances — aircon, water heater, solar inverter — ay bukas pa rin sa surge.

Type 1, Type 2, Type 3: Ano ang Pagkakaiba?

Ang SPD ay parang bantay sa iba't ibang pinto ng bahay mo. Bawat type ay may sariling puwesto at trabaho:

Ang sikreto ay coordination: patong-patong na proteksyon. Ang nasa harap (Type 1 o 2) ang sumasalo ng malaking enerhiya, at ang nasa dulo (Type 3) ang naglilinis ng natitira.

At ang pinakamahalagang paalala: walang silbi ang SPD kung mahina ang grounding. Ang SPD ay hindi "sumisipsip" ng surge — inililihis nito ang surge papunta sa lupa. Kung walang maayos na daanan papuntang lupa, wala itong mapupuntahan.

Ano ang Sinasabi ng PEC?

  • May sariling artikulo ang SPDs. Ang Philippine Electrical Code ay may patakaran (Article 2.85, Surge-Protective Devices) kung paano at saan dapat i-install ang SPDs, at kung anong klase ng SPD ang angkop sa bawat puwesto.

  • Listed at tama ang rating. Ang SPD ay dapat listed at tugma ang voltage rating sa system kung saan ito ikakabit.

  • Maikli at diretso ang koneksyon. Ang wiring ng SPD ay dapat kasing-ikli at kasing-diretso hangga't maaari — ang mahabang wire ay nagpapahina sa proteksyon.

3 TIPS Para Protektado ang Buong Bahay Mo

1. Ipa-check muna ang grounding.

Bago bumili ng kahit anong SPD, siguraduhing maayos ang grounding system ng bahay o building. Ito ang pundasyon ng buong surge protection.

2. Type 2 sa panel, Type 3 sa sensitive na gamit.

Para sa karamihan ng bahay, ang Type 2 SPD sa main panel ang pinakamalaking proteksyon kada piso. Dagdagan ng Type 3 (tulad ng magandang surge strip) para sa TV, computer, at router.

Kung kidlat-prone ang lugar mo, may overhead na linya, o may solar ka, ipa-assess sa engineer kung kailangan ng Type 1 at DC SPD para sa solar.

3. Silipin ang SPD pagkatapos ng malakas na kidlat.

Maraming SPD ang may status indicator. Ang SPD ay sakripisyo — kapag nakasalo ito ng malaking surge, puwede itong maubos. Kapag nagbago na ang kulay ng indicator, palitan na.

This educational guide is brought to you by Lumenova Philippines as part of our ongoing public awareness campaign for safer Filipino homes and compliant electrical engineering practices.


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