EARTHING SWITCH - Logytellogytel.es/wp-content/uploads/2013/01/earthing-switch.pdf · 2013. 11....
Transcript of EARTHING SWITCH - Logytellogytel.es/wp-content/uploads/2013/01/earthing-switch.pdf · 2013. 11....
EARTHING SWITCH “Innovation for sustainable railway”
LOGÍSTICA Y TELECOMUNICACIÓN S.L.
C/Varsovia, 6 Alcalá de Henares, 28805 Madrid (Spain)
Tel.: +34 918 87 12 60 Fax: +34 918 83 10 11
www.logytel.com
This equipment enable the remote earthing, allowing to improve the MTBF
(Mean Time Between Failures) with the guarantee of the earthing provided
and supervision.
Based on a request realize from Remote Control Center of Energy or CCO,
the equipment verifies whether the conditions for carrying out the earthing
and if the self-monitoring that is carried out is correct.
The earthing switch performs the connection of rail to the catenary and
thereafter to ground or to guard wire by means of an auxiliary contact.
Proper connection can be monitored with measurement of insulation from
the power substation. This system is specially designed for areas most
critical to security such as workshops, tunnels washing , etc.
The reestablishment can be effected in the same way, ensuring its position
although the replenishment of energy is monitored.
The main functions are:
• Monitoring of the union between the rail and the earthing
switch by means double connection.
• Communications with the Control Center for monitoring and
control.
• Measuring the voltage of catenary by means double
connection
• Monitoring switch position through an angular optical fiber
sensor.
The system as such is NOT a substitute to existing operating procedures
regarding grounding of power lines, is only intended as a support system
for the purpose of implementing this function, in order to minimize the
time for action, not constituting therefore sufficient reason to think about
the cancellation of the above procedures, but on the contrary, the support
in the same is needed to ensure the same safety in operations.
The system consists of the following elements:
Motor Drive System
It is the responsible of maneuver
the earthing switch, transmitting
the movement through the
rigging, also delivered through
the limit switch their position to
the controller.
It incorporates mechanical
locking articulated arm.
Motor controller and voltage comparator
CPU
Performs the control of the
entire system, obtains all the
information from the equipment
delivering it to the local
operating equipment for
monitoring, both manages and
evaluates the manoeuvres from
the local operating equipment.
It incorporates all the logic of
protection, self-monitoring and
blocking.
Analog inputs.
Angle gauge connection.
Recording data
Standard protocol for
communication
Simple addressing and unique
identification by means of serial
number unique.
EARTHING SWITCH “Innovation for sustainable railway”
LOGÍSTICA Y TELECOMUNICACIÓN S.L.
C/Varsovia, 6 Alcalá de Henares, 28805 Madrid (Spain)
Tel.: +34 918 87 12 60 Fax: +34 918 83 10 11
www.logytel.com
Transceiver power and Entrances
Provides the power to the
Transceiver of the angular
sensor and to the digital inputs
of the controller.
Voltage sensor
Realize the measure of the
catenary voltage and sends it via
4-20 mA current loop to the
controller-comparator voltage
for evaluation.
Earthing switch
SAC disconnector normalized standard of 3,150 A at 3.3 kVDC.
Additionally provides:
• Kit blade for grounding.
• Optical sensor angle in the blade (Isolator break monitoring).
Angular Sensor by F.O.
This sensor detects the position
of the mobile paddle of the
disconnector, is based on optical
fiber technology to give a level
of reflected power as a function
of angular movement of the
disconnector.