Voltage Limiting Device

Saltek is an expert in surge protective devices spd and voltage limiting devices vld protecting infrastructure in all industrial areas including electric railway tramway or metro infrastructure.

Voltage limiting device.

In case of overvoltage the tvl limits the dangerous voltage to very low safe values. Lenoir elec is specialised in designing and manufacturing custom made off load switches bar contactors load break switches voltage limiting. They limit increased touch voltage caused by the rail potential during the train operation. In addition in case of faults e g.

Tvl railway voltage limiting devices. The lenoir elec psnp and pspl over voltage limiting devices can be used both in circuits supplied with direct current and in circuits supplied with alternating current. Description ce vld 70 ex voltage limiting device. The hvl 60 0 3 hybrid voltage limiter is a voltage limiting device vld used primarily in dc traction systems to protect against electric shock.

Voltage limiting devices are available for nominal triggering voltage 60 v and 120 v. If the transient is fast the damage may occur before the protection device has a chance to operate. Entec s voltage limiting device etovpd22 is used to prevent the over standard voltage that can potentially put operators and passengers in danger of high voltage. Surge protective and voltage limiting devices for railways.

Voltage limiting device hvl 60 0 3 product description. Devices type vld o are used in normal operation i e. Voltage limiting devices estra vguard. Sécheron s vguard voltage limiting device is built on proven technologies and meets the electrical safety and internal arc testing requirements in the en 50122 1 and en 50526 2 standards.

Impermissible touch voltages can occur in dc traction systems between track systems. Voltage and current limiting devices take a finite amount of time to respond. Accidental short circuits with the contact lines the tvl generates a durable conductive path between the overloaded area and the substation. 25 years of experience in our own development and manufacturing and wide application knowledge make us leaders in the field of.

Voltage limiting devices are used to prevent impermissible touch voltages in dc traction systems in normal operations and in fault conditions by bonding the return circuit of a dc railway system to the earthing system or to the exposed conductive parts. The function of. So voltage limiting devices type vld f are intended for the protection in case of faults for example short circuit of the electric traction system with exposed conductive part.