What is the current frequency of the battery cabinet

What are the frequency regimes of a battery?

There are three frequency regimes to consider when dealing with batteries: 1. Ultra low frequencies. These are frequencies measured in inverse hours or days. In this regime the battery acts like you would expect it to. At low frequency a battery will act like a current source plus resistance.

How many amps are in the battery meter?

The batteries in the cabinet are date coded for 2009 (which means they were probably replaced during the last inspection in December). The meter reading here is 2.878 Amps - that's the supervisory current for the main control and display module you're looking at. Testing was pretty easy here.

How does a battery work at low frequency?

In this regime the battery acts like you would expect it to. At low frequency a battery will act like a current source plus resistance. All of the energy transfer will be due to ion movement through the electrolyte and none will be due to surface charge or capacitive storage.

What is a low frequency battery?

At low frequency a battery will act like a current source plus resistance. All of the energy transfer will be due to ion movement through the electrolyte and none will be due to surface charge or capacitive storage. 2. Medium frequencies, 1kHz to 1 Hz you are dealing in the regime of ion movement.

How do I measure standby and alarm current?

Here’s the correct method for measuring standby and alarm current of a conventional (or addressable) fire alarm panel (with no EVCS system): Disconnect the jumper between the two batteries that normally form the 24VDC supply. The fire alarm system should annunciate a trouble condition. (This also happens to be part of the testing criteria!)