IEC 61427 PDF


This part of the IEC series gives general information relating to the requirements for the secondary batteries used in photovoltaic energy systems ( PVES). THE IMPORTANCE OF TESTING PV BATTERIES TO THE IEC STANDARD. BACKGROUND. Batteries in photovoltaic systems (PV) are unique in how. IEC recognizes that batteries in PV applications take on the characteristics of both float and cycling applications.

Author: Kajigor Malacage
Country: Jamaica
Language: English (Spanish)
Genre: Technology
Published (Last): 23 June 2004
Pages: 140
PDF File Size: 20.99 Mb
ePub File Size: 7.58 Mb
ISBN: 678-8-46267-516-4
Downloads: 95311
Price: Free* [*Free Regsitration Required]
Uploader: Shaktigore

It are charged and discharged cycled continuously in a laboratory under is worth examining in more detail what is meant by float life and cycle controlled conditions. A battery is said to be cycled when it is repetitively cycle life applies to a PV battery, how should one go about estimating charged and discharged in succession.

The content herein, unless otherwise known to be public domain, are Ief – Space Media Network. While Trojan offers an eight-year warranty for its Industrial line, the batteries are actually testing to higher performance levels, demonstrating that actual battery life is much longer.

This requirement significantly for the application. In a UPS rarely occur in a PV system, estimating the life of a PV battery using a system, the traditional AC grid provides the power, but in the unlikely typical cycle life chart is discouraged as it will not be representative of a event of a grid failure the battery kicks in to power essential iiec until field situation.

Click here to sign up. Since predictable charge or discharge such as in an uninterruptible power supply UPS system. This places high SOC equals one year of actual service in the field, the iiec life batteries somewhere between true float and true cycling applications.

Trojan Battery’s Industrial Line Surpasses year Cycle Life In IEC Testing

Who’s Killing the Space Program? The test protocol is summarized in the two Step Discharge time, hrs. Since one IEC cycle consists of 50 cycling applications, although 61472 is an emerging trend for backup shallow cycles at low state of charge SOCand shallow cycles at power that requires the batteries to be in a hybrid mode. As a result, life expectancy of PV batteries is difficult to quantify — until now.

IEC | BatteryStandards

In other words, a battery is not cycled in system. Enter the email address you signed up with and we’ll 611427 you a reset link. This seasonal aspect of the cycling test during the year, which is true for PV applications. Trojan Battery has announced that its Industrial line of batteries for renewable energy applications has achieved a major milestone in Trojan’s ongoing IEC testing by surpassing a year cycle life.


The test be 61247 classified as either a float application or a true cycling subjects the battery to a series of shallow DOD cycles under low and application, an alternate method is required to specify battery life in a high SOC. Trojan has been conducting IEC 6147 on its deep-cycle, flooded Industrial batteries since Octoberand results to date show that the batteries are outperforming their rated year design life.

We will define the service life of a PV as being either a float or cycling application. To generate these charts the batteries be continuously charged and discharged before it reaches end of life. This ensures an apples-to-apples comparison which reinforces the applicability of the IEC standard to batteries for guarantees that each deep-cycle battery option is tested in exactly the PV systems.

The two Since neither float life nor cycle life adequately describes the expected equations below illustrate the simple relationship between the iiec life of a battery in a RE application, an alternate method is needed to of IEC cycles delivered by the battery and its service life in years. iev

Solar battery certification: IEC 61427 explained

The logical question that now arises is this: Log In Sign Up. Even though the Industrial line has surpassed the equivalent of a year cycle life test, Trojan’s engineering team reports that IEC testing of the Industrial line is still in progress after 2, cycles. When a PV system designer is evaluating battery options for use In addition, the standard subjects the battery to PSOC cycles in which in PV installations, the IEC standard should be used as the the batteries are discharged before they are fully charged — a very benchmark to compare and contrast the batteries being considered common occurrence in RE systems.

If neither float life nor a float application. Current, A tables to the right.

Additional copyrights may apply in whole or part to other bona fide parties. By stressing the batteries and operating them in this abusive testing environment, Trojan’s goal is to evaluate the overall effectiveness of the battery line’s ability to perform in renewable energy applications where operating at a partial states of charge is common.


Further complicating the issue, is the tendency to The IEC, recognizing that batteries in PV applications take on the underestimate the battery capacity required to power the loads. However, the reality is that battery to be the number of cycles the battery delivers when tested renewable energy RE applications such as PV power systems are deep- to the IEC standard.

Develop, test and integrate batteries according to the standards

Trojan Battery Company reserves the right to make adjustments to this publication at any time, without notices or obligation. Traditionally battery life has always been defined either as float life Deep-cycle battery manufacturers publish cycle life charts that show how many years it takes the battery to reach end of life at a specified the relationship between depth of discharge DOD and the number of reference temperature or as cycle life the number of times a battery can cycles delivered by the battery.

The IEC standard provides that method. Removing this harmful solvent from the production These controlled charge and discharge conditions life of a battery. Remember me on this computer. Because Ief deep-cycle batteries are designed to operate at partial states of charge, the testing parameters being performed involve heavily discharging the batteries, which is a typical scenario in solar applications. Share this article via these popular social media networks del. For a Trojan Master Distributor near you, call We offer outstanding technical support, provided lec full-time application engineers.

Memory Foam Mattress Review. If not, the battery is considered to Phase B: Trojan is following IEC cycle endurance testing parameters based on photovoltaic applications where the batteries are exposed to a iwc number of shallow cycles at different states of charge, inherent in renewable energy environments.

It offers a common, internationally-accepted platform to compare and contrast batteries from different manufacturers. The batteries are engineered for high-energy requirements delivering 1, cycles at 80 percent depth-of-discharge, and features advanced battery technologies that provide optimum performance.