Power distribution boxes YPBV, YARV, YAVZ, YPBVU

YARP-11

Power boxes YARP-11 are designed for switching and protecting electrical circuits from overload currents and short-circuit currents. The series includes: YARP-11-31-54-UKHL3, YARP-11-35-54-UKHL3, YARP-11-37-54-UKHL3, YARP-11-39-54-UKHL3. 

Purpose:

Power boxes YARP-11 are designed for switching and protecting electrical circuits from overload currents and short-circuit currents. The series includes: YARP-11-31-54-UKHL3, YARP-11-35-54-UKHL3, YARP-11-37-54-UKHL3, YARP-11-39-54-UKHL3. 
Power boxes of the YARP-11 series are designed for switching and protecting electrical circuits from overload currents and short-circuit currents.
Main advantages:

• High quality;
• Degree of protection IP54.

Structure of the symbol:

YARP-11-XX-XX-XXXX

YARP  - a box with a switch and fuses

11  - conditional series number

XX  - conventional designation of the nominal current value:

31 - 100A;
35 - 250A;
37 - 400A;
39 - 630A.

XX  - protection level according to GOST 14254

ХХХХ  - conventional designation of climatic version and placement category according to GOST 15150

Technical characteristics of the YARP-11 boxes:

Schematic diagram of the power box:


Application areas  – mechanical engineering and fuel and energy complexes, energy enterprises, housing and utilities, railway transport, nuclear power plant facilities. Installed:
● Directly on building structures;
● In ground-based stationary complete devices;
● Input and distribution devices of residential, public and industrial buildings, distribution cabinets and points, transformer substations, control cabinets and boxes, nuclear power plant facilities.

Operating conditions:

• altitude above sea level no more than 2000 m
• in terms of the impact of climatic factors of the external environment - execution of UHL and T categories of placement 3 and 1 according to GOST 15150-69.
• in terms of the impact of mechanical factors – group of operating conditions M3 according to GOST 17516.1-90;
• degree of environmental pollution – 3. The environment must correspond to the design of the switchgear and control panel in terms of their degree of protection according to GOST 14255 and must not contain gases, liquids and dust in concentrations that disrupt the operation of the switchgear and control panel.
• continuous operating mode
• working position in space – vertical.
• The rated working current of boxes with protection class IP32 at an ambient temperature above 20 °C must be reduced by 5% for every 10 °C. The rated working current of boxes with protection class IP54 must be reduced by 20%.

Design:
NKU are stationary low-voltage complete devices consisting of a metal casing in which a mounting panel is installed. The devices are placed on the panel. The NKU design ensures that the switching device is interlocked with the drawer door in such a way that when the switching device is on, the drawer door cannot be opened without breaking the interlock. The switching device is switched on and off using a drive handle installed on the side wall of the casing. The
NKU must be operated in accordance with the requirements of the "Rules for the Technical Operation of Consumer Electrical Installations". Switching the NKU switching device on and off must be performed with the drawer door closed. The drawer casing must be grounded in accordance with the requirements of GOST 12.2.007.0-75.

Overall dimensions:


It is not allowed to lay wires and cables in UVN cabinets that do not belong to this cabinet. In exceptional cases, when fulfilling the requirement leads to a significant complication of installation or design, it is permissible to lay these wires and cables in pipes or boxes.