Alstom RPH3/PS125b Controlled Switching Device,CT1VT220/TCR

This new Alstom Grids point-on-wave switching controller, RPH 3.

offers an electronic alternative to conventional solutions with increased security

and protection of the electrical equipment.

It can be used for configuration, monitoring, data logging and diagnostics.

It provides a more reliable way of stopping transient over voltages from damaging networks than traditional devices.

Traditionally, circuit breakers have been equipped with closing resistors to

minimize the level of over voltage generated during closing or re-closing operations.

This solution is expensive because a lot of equipment has to be installed and secondly

it is inherently less reliable since its mechanical parts can be affected by external

disturbance such as severe climatic conditions.

RPH 3 reduces the stress create by switching operations caused by lightning strikes and transient surges.

It is suitable for protecting circuit breakers and transmission circuits from 362 kV power networks

and above and can be applied to closing and auto-reclosing of

uncompensated or shuntcompensated transmission lines as well as

dual switching of high voltage lines and transformers.

RPH 3 uses sophisticated algorithms and fast digital signal processing

to close contacts in under a millisecond, when the voltage across the breaker is close to zero.

It increases reliability, requires less maintenance, is very easy to install and is smart grid ready

(fully IEC 61850 compliant) with its integrated web server.

RPH 3 fully supports the optimization of the customers network design,

operation and maintenance and reduces the total cost of ownership.