DC switchgears 600...3300 V

Up-to-date technologies are applied in our advanced DC switchgears series to provide more convenient and cost-effective application, easy installation and maintenance.

Compact and reliable switchgear ensures uninterruptible power supply of traction network as well as personnel safety.

Main specific features:

application of maintenance-free components, produced by the global manufacturers, with high switching capacity, high dynamic resistance to short-circuit currents and large mechanical resource;
electromechanical interlockings and protections guarantee high safety level for maintenance staff;
unilateral maintenance ensures significant reduction of traction substation area;
easy access to the components when carrying out routine maintenance;
dust and moisture resistance (protection level IP 43);
switchgears passed type tests in IPH Institut test center (Berlin, Germany) and meet IEC 61992-6 and EN 50123-6 standard requirements;
total automation, human factor is excluded from switchgear real time control processes;
built-in microprocessor traction network protection and monitoring system SMTN-3 meets EN/IEC 60255-1 standard requirements.

reliability, safety and maintainability

components with improved characteristics of leading world (global) manufacturers

meeting international and European standards requirements

reduced overall dimensions

intelligent control, protection and diagnostics system

Key benefits:

substation space saving and decrease of expenses on capital construction due to overall dimensions reduction;
high reliability level;
maintainability and personnel safety;
time and cost reduction on technical maintenance during the whole lifetime period;
long lifetime (30 years);
built-in microprocessor-based traction network protection and monitoring system.

Application area:

metro, city electric transport and railways traction substations with rated voltage 600..3300 V DC;
departmental industrial and iron and steel plants, mining and processing plants railways traction substations with rated voltage 1650..3300 V DC.

INTELLIGENT CONTROL
RELIABLE HIGH-SPEED CIRCUIT BREAKER
UNIQUE DISCONNECTOR
DESIGN FEATURES
ADDITIONAL BENEFITS

DC switchgears are equipped with microprocessor control and diagnostics system with displaying information on the visualization panel. The control system is based on SOTA^® controller (by PLUTON), that meets a series of standards for PLC — IEC 61131 and provides support of the IEC 61850 protocol.

Due to application of visualization panel, the required information is displayed in convenient intuitive form and switching units control is performed via touch to the touch screen.

Control system provides:

complete automation of cubicle control;
cubicle condition monitoring with equipment self-diagnostics function;
cubicle events logging at traction substation;
data transfer to the upper control level;
traction network protection.

Modern visualization panel with colored LCD provides:

easy switching devices control, trolley rolling in and out control using a touch screen;
quick displaying of switching elements condition, trolley position, current and voltage values, messages history, trends, settings, traction network monitoring system screens;
control mode selection (manual, remote, program).

Sécheron UR type high-speed circuit breakers with improved operational characteristics are applied in DC switchgears:

design providing minimum maintenance;
high switching capacity;
longtime mechanical durability;
minimum tripping time;
automatic setting of contact tightness;
long lifetime;
insulation material wiping under arc;
smooth tripping setting adjustment;
high mechanical resistance.

EST, EDT disconnectors manufactured by Elpro (Germany) are applied for electric power circuit switching.

Applied disconnectors have a unique crimp-type contact system design with double gap and wiping contacts, geared by a small-sized servo drive.

Disconnectors are classified as maintenance-free components, with a number of cycles before maintenance — 30 000 cycles (or 20 years).

Disconnectors are equipped with noiseless economic electric drive, capacity 18 W. Application of electric drives controlled with automation system reduces risk of disconnectors and bearing insulation damage in case of false staff operation with undue exertion.

Switchgear components are mounted in separate compartments:

automatics and control compartment;
compartment with high speed circuit breaker;
power busbars and cables compartment.

High-, and low-voltage compartments are separated from each other providing operational reliability, equipment maintenance and operation safety.

Rigid foundation
Cubicles have rigid foundation providing design stability and excluding necessity of deepening in substation floor.

Maintainability
Withdrawable trolley allows quick inspection of equipment. Withdrawable trolley has three positions: operation, control and maintenance. Unilateral maintenance provides easy access to all components of the cubicle and maintenance safety.

Additional options

In addition to innovative traction network protection and monitoring system SMTN-3/SOTA line test device (short circuit test device) and cable monitoring system that allows determining internal and external cable insulation resistance value in real-time and provides emergency prevention in case of insulation characteristics degradation are built into switchgears.

Environmental compatibility
PLUTON uses materials with minimal impact on the environment in its production. The materials are safe not only during operation but also at the end of product life.

Vast application experience
More than 900 DC switchgears manufactured by PLUTON are successfully applied at traction substations in Ukraine, Sweden, the Republic of Kazakhstan, the Republic of Tajikistan, and South Korea.