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L UNIT of HEATING SENGER COACH
AU SYSTEMS f
Electrical Automatical Heating system is generally used for passenger railway cars.
1-Heating System (1000 V)
It consists of following parts.
- Equipment panel
- Main switch
- Power contactor
- Main fuse
- Low voltage relay
- Distribution fuse
2. Heating System (1000-1500-3000V):
It consists of following parts.
- Equipment panel
- Main switch
- Power contactor
- Main fuse
- Electronic voltage sélection relay
- Distribution fuse
- Level changing motor
circuit breaker
Equipment Panel :
Main and Auxiliary Equipment panels are assembled under the passenger railway car. They have 4mm length and include stainless steel material. Protection class IP54 has a security System for touching, dust and water input. Main and auxiliary equipment panels are given to the railway car with cable connections made and ready to assembly. Opening of equipment panel's cover, under voltage is prevented with mechanic locking mechanism.
Main Switch :
Thèse switches are manufactured for
50kW heating power.
For 1000VAC, DC, 50 A
For 3000 VDC, 16.7 A
Main switch mechanism is a cam switch
with spring that has a 90° moment
breaking.
This mechanism locks the system when the cover is opened. Switching on is prevented by this way.
Power Contactor :
Power Contactor is used at every electric circuit for commanding heaters. This contactor is a magnetic polarized contactor.
Coil operating voltage is DC. Contactor is manufactured as C insulating class according to VDE 0110, and as D device group according to VDE 0660 standards. Operating coil is bridged with a diot and sériai connected résistance to have protection from over voltage.
Technical Spécification :
Operating Voltage Operating Current
3000 V AC/DC 6A
1000 V Under Voltage Relay :
Low voltage relay is operating between 450 V AC (600 V DC) and 1000 V AC (1200 V DC) (±%10). It directly gives contact output. This contact and high voltage is insulated from each other. This relay is towards to voltage at heating system. If the voltage is higher than 450V AC (600 V DC), operating command is issued and heaters switch on. If this voltage is lower than 300V AC (360 V DC) heaters are switch off.
Operating Field : 450-1000 V AC 600-1200 VDC Open-Close Capacity : 1 A at 24 V DC
Distribution Fuse :
Cylindrical fiberglass not flaming thermoset body is used at distribution fuses. There are connection terminais on the body and pure silver melting wire and quartz sand as arc extinguisher are inside of the product.
Operating Voltage : 3000 V AC/DC Operating Current : 6 A
Electronic Voltage Selectivity Relay : Operating Way :
High Voltage is divided on résistances and sent to four-measurement step. Thèse are
at AC 1000V, 1500V at DC 1500V, 3000V the steps. Also, there are two overload measurement levels instead of thèse four measurement levels (one AC, the other DC). If an overload is determined higher than 1850 V AC, 3750 V DC at both measurement levels, 3000 V position is selected and heaters are switch off. With the sign which is obtained from measurement rank, signal is given to the related transistor, and relay with having a time delay.
Operating Field : 650V AC - 1875V AC 1000V DC- 4000V DC
Operating Levels: 1000, 1500V AC 1500, 3000V DC
Battery Voltage : 24V DC (18-32V DC)
Level Changing Motor Circuit Breaker:
Level Changing Motor Circuit is manufactured for equipment panel with group of 8 and for auxiliary equipment panel with group of 6.Groups that are assembled on to the châssis are manufactured with transparent and not flaming material and contacts are seen easily. Level changing motor
circuit breaker has the contacts 1000,1500 and 3000V positions with the assistance of servomotors by receiving the signal from the electronic voltage selecting relay and transmit the electrical energy to the power contact.
Pic-1 Automatical Heating System for Passenger Railway Car
Type Using Class Nominal Power
FEC AC1 / DC1 16 kW 3000V AC/DC
Number of Contacts (Ad) : 1
Auxiliary Contact Coil Voltage Weight Insulation
1 NA/1 NK< 10A 24, 72, 120V DC 3,2 kg C group for VDE 0110
Pic- 2 Power Contactor
There are 8 contactors at equipment panel and there are 6 contactors at auxiliary equipment panel. Auxiliary equipment panel is manufactured according to orders.
Main Fuse :
Insulated body is manufactured with high ceramic dough, which has a mechanic résistance of main fuse. Cylindrical shaped ceramic body is equipped with covers and contact knives at both ends. Melting wire is pure silver.( it doesn't dépend on corrosion) Fuses have a normally delaying characteristic. Quartz sand is used as arc extinguishing material.
Fuses limit the short circuit current with a high measurement in a short circuit position and so, they protect the system against to thermal and dynamical forces. Main fuses are manufactured as knife fuses and fixed to equipment panel. Therefore, maintenance opérations of this product are made without voltage applied. When the cover is opened, fuses prevent the contact of the cover plate and human.
Pic- 3 Main fuse
Pic-4
Distrubtion fuse
22/1-
i^FEDERAL
