A term used in electronics, audio, and electrical circuitry. Impedance is the general term for the ratio of voltage to current; it is measured in Ohms and is affected by both inductance and reactance in a circuit. It is similar to electrical resistance, in that it is a measure of the opposition to the flow of electricity. Impedance is meaningful only for alternating current (AC) circuits, and as a factor, changes value as the frequency of the electricity changes.
Provides durable casing to protect an FTTx/Telecom unit. Features vary by model.
Prolongs unit life with rugged casing made of impact-resistant material for maximum durability.
The voltage range when a UPS operates within normal mode and does not require battery power.
The isolation transformer eliminates the physical path that electrical current can flow between two systems, yet still allowing them to exchange power.
A measure of electrical energy. One joule is defined as the energy needed to pass one ampere of current through one ohm of resistance.
Enable the unit to be mounted on a wall, under a desk, and in other configurations to optimize space and keep power cords out of the way.
One thousand volt-amperes. Common measurement of equipment capacity. An approximation of available power in an AC system that does not take power factor into account.
Protects the sealed lead-acid batteries and prolongs battery life.
Light to signal a model’s operational status. Indicators vary by product line and model.
Covers defects in materials and workmanship in the product under normal use and conditions. See warranty for details.
Exists when a line interactive UPS has an autotransformer that regulates low voltages (e.g., brownouts) and over voltages (e.g., spikes) without having to switch to battery.
