Auxiliary Power Distribution Panel

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The Auxiliary Power Distribution Panel (APDP) is designed to supply power to internal consumers (lighting, ventilation, heating, automation systems, etc.) within transformer substations, distribution points, switchgear assemblies, and other power facilities/industrial plants.

Functional Composition:

  • AC power distribution circuits;
  • Circuit breaker status signaling circuits;
  • Circuit breaker control circuits;
  • Voltage monitoring circuits;
  • Control circuit power supply;
  • Automatic Transfer Switch (ATS) circuits;
  • Voltage/current measurement circuits;
  • Lighting circuits.

Structural Composition:

  • Panel 1: Incoming device + Bus Section 1 with outgoing feeders; 
  • Panel 2: Incoming device + Bus Section 2 with outgoing feeders;
  • Sectional Panel: Sectional circuit breaker + Bus Sections 1/2 control;
  • Cable compartments for Bus Sections 1/2.

 

 

 

 

 

 

 

 

 

 

 

Functions:

  • Power input and bus sectioning;
  • Automatic backup transfer (mechanical/electrical interlocks); 
  • Motor control and protection; 
  • Soft-start and frequency regulation; 
  • Lighting control;
  • Electric heater control; 
  • Electrical parameter measurement; 
  • Short-circuit/overload protection; 
  • Automation signal monitoring/alarming; 
  • Visual/audible alarms; 
  • SCADA integration; 
  • Local/remote control. 

 Advantages:

  • Enhanced Safety: Arc-resistant design with interlock protection against switching errors.
  • High Reliability: Modern switching devices/materials ensure durability (Manufacturer: Infraenergo).
  • User-Friendly: Easy cable access + customizable configurations.

 
Technical specifications
 
Parameter Value
Current Type & Frequency
 AC, 50Hz
Rated Current
 Up to 630A
Busbar Current Rating
 Up to 1000A
Main Circuit Operating Voltage 
 400V, AC
Auxiliary Circuit Voltage
 220V, AC
Main Circuit Insulation Voltage
 500V
Auxiliary Circuit Insulation Voltage
 500V
Incoming Breaker Breaking Capacity 
 Icu=65 kA
Busbar Short-Circuit Withstand  
 Icw=65kA 1s
Protection Rating (IP)
 Up to IP54
Bus Sectioning Form 
 Up to 4b
Earthing System TN-С, TN-C-S
Internal Separation  Type 1
Functional Unit Connection  Type    FFF

Design:

Construction: Powder-coated steel frame with front-access doors. Grounding: PE busbar installed at the panel base. Cabling: Top-entry cable connections.

Compliance:

  • ST RK GOST R 51321.1-2010 (IEC 60439-1:2004);
  • TR CU 004/2011 (Low-Voltage Equipment Safety);
  • GOST 12.2.007.0, GOST R IEC 536.