Tātaitai pākahiko pūoho ahi
Whakaritea te rahi o te pākahiko standby mō tētahi panel pūoho ahi.
Reads NZS 4512:2010. Tables checked 26 Sept 2026.
Whakamātau mahi 5
Ka whakakī ia mahi i ngā uara tauira. Whakakapia ērā ki ō uara.
- Size a fire panel batteryThe battery capacity for 0.35 A on standby and 2.5 A in alarm.
- Size a battery for an unmonitored panelThe capacity for 72 hours of standby.
- Size a battery with ageingThe capacity with ageing and temperature factors.
- Size a small panel batteryThe capacity for 0.1 A standby and 0.8 A alarm.
- Size a 24-cell panel batteryThe capacity of a 48 V panel.
Ngā whakauru
He tauira mahi me ngā whakauru taunoa.
- Utanga kāore he whakaoho
- 0.2 A
- Utanga matohi teitei rawa
- 2 A
- Kua honohono ki tētahi pokapū whiwhi tawhiti
- Āe
- Wā whakatūpato, meneti
- 30
- Tauutu pakeke
- 1.25
- Tauwehe pāmahana
- 1
- Pūtau i te raupapa
- 12
Te kaha e hiahiatia ana i te 20 °C
7.25Ah
- Te kaha iti rawa i mua i ngā tauwehe
- 5.8Ah
- Te wā takatū
- 24h
- Te kaha takatū
- 4.8Ah
- Te kaha o te whakaoho i te wā kua whakauruhia
- 1Ah
- Tauutu pakeke
- ×1.25
- Tauwehe pāmahana
- ×1.00
- Te kaha mai i te utu me ngā tauwehe
- 7.25Ah
- Te nama whakahaere
- Te kaha mai i te utu me ngā tauwehe
- Charger current to restore in 24 h
- 0.5A
- Te voltage float
- 26.4V
- Te manawaroa voltage float
- ± 0.36V
- Te voltage iti rawa o te whakamātautau ia marama
- 19.2V
He āwhina hoahoa tēnei hua. Manatokohia ki te paerewa o nāianei.
Ngā hīkoi tātaitanga
- Te wā takatū24h
NZS 4512:2010 Cl 213.1
- Te kaha takatū4.8Ah
NZS 4512:2010 Cl 213.1
- Wā whakatūpato kua uru, meneti30
NZS 4512:2010 Cl 213.1
- Wā whakatūpato o te clause, meneti30
NZS 4512:2010 Cl 213.1
- Wā whakatūpato whakahaere, meneti30
NZS 4512:2010 Cl 213.1
- Te kaha o te whakaoho i te wā kua whakauruhia1Ah
NZS 4512:2010 Cl 213.1
- Te kaha o te whakaoho i te wā whakahaere1Ah
NZS 4512:2010 Cl 213.1
- Tauutu pakeke×1.25
- Tauwhāinga pāmahana×1.00
- Te kaha mai i te utu me ngā tauwehe7.25Ah
NZS 4512:2010 Cl 213.1
- Te kaha iti rawa i mua i ngā tauwehe5.8Ah
NZS 4512:2010 Cl 213.1
- Te kaha e hiahiatia ana i te 20 °CHua7.25Ah
NZS 4512:2010 Cl 213.1
- Te nama whakahaereTe kaha mai i te utu me ngā tauwehe
NZS 4512:2010 Cl 213.1
- Charger current to restore in 24 h0.5A
NZS 4512:2010 Cl 212
- Te voltage float26.4V
NZS 4512:2010 Cl 212
- Te manawaroa voltage float0.36V
NZS 4512:2010 Cl 212
- Voltage rohe au mō ia pūtau1.85V
NZS 4512:2010 Cl 212
- Roa whakamātautau ia marama10s
NZS 4512:2010 Cl 602.7
- Reiti whakahekenga whakamātautau ia marama, hāora5
NZS 4512:2010 Cl 602.7
- Te roa iti rawa o te ora, ngā tau5
NZS 4512:2010 Cl 213.5
- Te voltage iti rawa o te whakamātautau ia marama19.2V
NZS 4512:2010 Cl 602.7
Mō tēnei tātaitai
How this is calculated
The tool sizes the standby battery for a fire alarm panel to NZS 4512:2010 Clauses 212 and 213. It sizes the capacity only. It does not pick the battery type.
- Standby capacity. It multiplies the non‑alarm load by the standby period.
- Alarm capacity. It multiplies the alarm load by the alarm period. It compares your period with the period in Cl 213.1 and uses the longer.
- Factors. It adds the standby and alarm capacity. It multiplies by your ageing and temperature factors.
- Minimum. It also reads the minimum capacity before factors. The larger figure governs, and the tool names it.
- Charger. From Cl 212 it gives the charger current to restore the battery in 24 h. It also gives the float voltage and tolerance for your cell count.
- Monthly test. From Cl 602.7 it gives the minimum voltage the battery must hold in the monthly test.
| Step | Table or clause | What it decides |
|---|---|---|
| Capacity | NZS 4512 Cl 213.1 | Standby and alarm capacity, with factors |
| Charger and float | Cl 212 | Charger current and float voltage |
| Monthly test | Cl 602.7 | The minimum voltage in the test |
| Service life | Cl 213.5 | The minimum life of the battery |
Worked example
A panel with a 0.5 A non‑alarm load and a 3 A alarm load. The alarm period is 30 min. The system has 12 cells and is monitored. The tool gives 16.88 Ah at 20 °C. The charger current is 1.2 A. The float voltage is 26.4 V.
Limits
- NZS 4512:2021 supersedes the 2010 edition this tool reads. Check the current edition.
- The tool does not check the battery type or the service life.
- It does not add up the load of each device. You enter the totals.
- It gives the capacity at 20 °C. Enter a temperature factor for a cold or hot room.
See also: Fire alarm cabling, Sounder level and the DC battery sizing tool.
Pātai
He āwhina hoahoa te hua. Manatokohia ki te paerewa o nāianei.
He aha te mahi a te taputapu pākahiko pūoho ahi?
Ka tāpiri te taputapu i ngā ampere hours e tangohia ana e te panel i te wā standby ki ngā ampere hours e tangohia ana e ia i te wā pūoho. Ka whakamahi i tētahi ageing factor me tētahi temperature factor, ā, ka pūrongo i te kaha i te 20 °C.
Kia pēhea te roa me mau tonu te pākahiko pūoho ahi?
Ka whakamahi a AmpSize i te 24 hāora standby ina tū tētahi hono aroturuki, ā, i te 72 hāora ina kore. Kātahi ka tāpiri i te 30 meneti o te uta pūoho. Ko ēnei tatauranga e toru i ahu mai i NZS 4512:2010 Clause 213.1. Ka whakarerekē te kōwhiringa form i waenga i ngā wā standby e rua.
Ka taea te hua te heke ki raro i te tauanga clause?
Kāo. Ko Clause 213.1 me Clause 213.2 e whakaatu ana i ngā wā iti rawa. Ka tātaihia e AmpSize te kaha iti rawa i mua i ngā tauwehe, i runga i te wā pūoho roa ake o te clause me te wā ka uru e koe, ā, kāore e pūrongo iti iho i taua tatauranga. Ka puta he whakatūpato mēnā he poto te wā pūoho.
Ko te charger me te float voltage e pūrongo ana ia?
Ka wehea e AmpSize te kaha ki ngā hāora 24, ka tāpiri i te iahiko kore pūoho. Ka hoatu tērā i te iahiko charger o Clause 212.1. Ka whakareatia hoki e ia te 2.20 V me te 0.03 V ki tō maha o ngā cell, mō te pae float o Clause 212.5.
He aha te paearu whakamātautau ia marama?
Ka whakamātau a Clause 602.7 i te pākahiko mō te 10 hēkona i te reiti whakaheke 5 hāora, neke atu rānei. I taua whakamātautau kāore te pākahiko e āwhinatia e tētahi atu puna. Me kore tōna voltage e heke ki raro i te 80 ōrau o tōna voltage ingoa.
Ngā Clause me ngā Table e pānuitia ana e tēnei taputapu
- NZS 4512:2010 Cl 212Battery charger
- NZS 4512:2010 Cl 213Rechargeable batteries
- NZS 4512:2010 Cl 213.1Standby battery capacity
- NZS 4512:2010 Cl 213.5Battery service life
- Cl 211, 212, 213, 602.7Fire alarm standby battery periods, cell voltages and test criterion
Ia Clause me Table, me te pēhea i manatokotia ai ia tētahi
Ngā tūtohi i arotakehia whakamutunga i te 26 Sept 2026.
Ngā taputapu hononga
- Tātaitai battery bankCalculate battery bank capacity and autonomy for a load.Kāore he paerewa
- Pākahiko tū, ā, e ai ki te Duty Cycle PākahikoSize a stationary battery and charger to a duty cycle.Kāore he paerewa
- Tātaitai rahi taura DCSize a d.c. cable up to 1500 V for current and voltage drop.AS/NZS 3008.1.1
He whai hua tēnei?
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