Security from grid power interruptions and fluctuations
Telecom power solutions secure telecommunication services in case of grid power interruptions and fluctuations. Delta’s power systems are designed for wireless broadband access and fixed-line applications, as well as for Internet backbone and data centres.
We provide a broad range of power systems and global services to telecom operators, network manufacturers and integrators.
How does it work?
The essential parts of a system are rectifiers, batteries and a power system controller. In direct current (DC) power systems, a rectifier converts alternating current (AC) to DC and provides the power necessary to charge batteries. In AC power systems, an inverter converts DC into uninterruptible AC. A power system controller monitors and controls the entire system and site power infrastructure, maximizes battery life, supports energy and cost savings, and informs the operator of maintenance needs. The power system can be expanded with renewable energy sources, which creates major energy and operating cost savings. In regions with highly unstable AC mains conditions, additional AC line conditioning elements can be integrated into the system for optimal operation.
Delta’sInD, OutDand HelpD series are designed to complement each other. InD stands for indoor power systems, while OutD solutions are designed for demanding outdoor use. HelpD is our global service concept. Our CellD, MidD and CabD series are designed to fulfil all your power requirements.
- What is the function of SMPS in telecom?
A switched-mode power supply (SMPS) can be understood as an electronic circuit converting power with switching devices that turn on and off at high frequencies. They are also storage component like inductors or capacitors that supplies power when the switching as at its non-conduction state.
Switching power supplies offers high efficient and is broadly used in multiple electronics equipment such as computers and other sensitive equipment that require a stable & efficient supply of power.
A switched-mode power supply is also called a switch-mode power supply or switching-mode power supply.
- Why does Telecom use negative voltage?
There a various reason for using negative voltage such as: –
- There is more metal corrosion in positive voltage as compared to the negative voltage
- The negative voltage is safer for human bodies while doing telecom activities
- There are chances that thundering can cause positive voltage in the equipment circuit. Since negative voltage has a lack of electrons, it can neutralize the positive charge that can avoid producing heat.
- For long telephone lines, the negative voltage is safer while transmitting power
- A standard lead-acid battery has 6V, which corresponds to 8 which is considered a good standard. It is the highest, more safe that compromise voltage to pass over long wires. The negative voltage is used, so the current leaked due moisture does not electroplate away the copper, which is present in the cables.
- Why does Telecom use DC power?
Telecom passes signals of voices. If AC power is used, the voice line will have a disturbance that can disrupt the communication; on the other hand, there is no such limitation in DC power. DC power is not restricted to frequency variation or leading power factor. Also, DC power can be stored; thus, backup for telecom buses can be easily given by batteries directly without any power conversion loss.
- Why do we mostly use 48 volts in telecom companies?
It considered a “compromise voltage,” as this level of voltage is high sufficient to enable relatively low signals loss for transmission from a more considerable distance and still low enough from a safety perspective. Internationally level below or at 50V is considered to be safe.
Another advantage it offers is that when four 12V batteries are connected in series, it creates a backup power source of 48V DC that can be used in case of an electrical power outage. An essential trait of telecom power installation is that the polarity of the 48V DC source is set to be negative concerning ground. This convention gives the advantage to avoid corrosion and makes it safer for the human body to perform telecom maintenance activities. This also prevents metal from copper wire to migrate a cause of rapid corrosion.