What are flooded lead acid batteries?
Batteries that are filled with a liquid electrolyte and the cells are vented to atmospheric pressure through a vent cap.
What are good batteries for a substation?
Both Lead-Acid and Ni-Cad batteries are used in substation applications.
What are stationary batteries?
A stationary battery is a battery system that is permanently installed in a fixed racking system for providing DC power to equipment in the event of an AC electrical failure. Typically these systems are 120 VDC.
What are valve regulated batteries?
A sealed battery which has a pressure relief valve capable of opening to relieve over pressure due to overcharging.
What battery requires hydrogen monitoring?
Any system or set of batteries that are going to be on continuous charge in any unmanned area for a period of time.
What do you sense in a battery room?
Temperature and hydrogen concentration are typically what are monitored.
What electrolyte is used in maintenance-free lead batteries?
H2SO4 – Diluted sulfuric acid.
What gases will the batteries emit?
During charge, both Oxygen and Hydrogen are released from the plates. In addition, Hydrogen Sulfide can be produced during overcharging or gassing and forming charges of batteries.
If a battery is subjected to contaminated electrolyte, it may also produce chlorine gas, arsenic or other hazardous gases due to the contaminants.
What is a battery jar monobloc?
“Monobloc” is a term used to describe a number of battery cells formed into a single molded case. Examples are 3 cells in a 6 volt battery or 6 cells in a 12 volt car battery.
What is a battery load bank?
A resistive device which can be connected to an individual battery, and/or entire battery system, and draws a load current from the battery.
What is a charge rectifier?
A Charger / Rectifier is any electronic device or component that is used to convert AC single or 3 phase electricity into a constant regulated DC voltage.
What is a DC plant?
DC Plant refers to a Battery System installed in a fixed location. It is comprised of the Battery, Charger, Isolation Breakers, and other controls needed to operate the system.
What is a hydrogen gas detector?
An electronic device mounted at the highest point in a battery room that will monitor the percentage of Hydrogen gas volume in the air surrounding the detector.
What is a rod or plate in a battery?
A plate in the battery is where the active materials are manufactured which react with the electrolyte to form the chemical reactions for charge and discharge.
What is a three phase battery?
There is no such thing as a three phase battery. “3-phase” is a reference to three phase AC power.
What is best way to monitor hydrogen gas in a storage area?
Install H2 detectors.
What is DC upgrade and battery bank replacement?
Replacement of a battery system with either new batteries or batteries rated for new requirements.
What are fiber nickel cadmium batteries?
Nickel Cadmium (Ni-Cd) batteries constructed with fiber plate technology.
What is inside a nickel wet cell battery?
Plates are made of Nickel and Cadmium. An electrolyte of Potassium Hydroxide is used.
What is “pocket plate”?
Active material of battery plates is pocketed.
What is sealed maintenance-free nickel cadmium battery?
A Ni-Cd battery that is not vented and uses the principles of recombination like VRLA batteries do.
What is a storage battery?
Any battery that is used for storing DC energy as a reserve source of power.
What is the main purpose of a standby battery system?
To provide DC voltage and current to load equipment during a loss of normal AC power sources.
What are tubular batteries?
Plate construction is formed of tubes filled with active material. The tubular shapes give an increased surface area which allows more acid contact area and higher ratings for the same size battery.
What are two-tier battery racks?
A rack system where batteries are installed in two separate rows, one atop the other separated by space for maintenance of the lower row.
What is a load test on a battery?
A specific current is drawn from the battery to determine if it will supply its rated capacity.