Overview
Combined control cabinets for heating substations (ЩУ-ЧЭ)
Combined control cabinets of the ЩУ-ЧЭ model are multifunctional electrical systems designed to provide comprehensive solutions for problems in the infrastructure of heating substations.
Main tasks of the equipment
The device performs three key functions:
- reception and distribution of electrical energy in the system;
- control and protection of asynchronous electric motors;
- monitoring and ensuring the safety of auxiliary equipment at the heating substation.
Control modes and regulation capabilities
The cabinet provides:
- local and remote control of electric motors of pumping groups;
- flexible Adjusting the motor speed using frequency converters allows for optimized pumping equipment operation.
Integration with automation systems
The ShchU-ChE is designed for use with external automated control systems for heating substations. Compatibility is supported with devices such as:
- Transformer;
- Sauter;
- MFK-1500; and similar devices.
Modular structure of the cabinet
The design of the ShchU-ChE is implemented according to the modular principle and includes three functionally separate groups of cabinets:
- Input panels(VRU-VP group):
- VP1;
- VP2;
- PPE.
- Purpose: providing input and primary distribution of electrical energy.
- Distribution panels(VRU-RP group):
- RShU1;
- RShU2.
- Purpose: Distribution of electrical energy to consumers within the system.
- Variable Frequency Drive Cabinet (ShAU-VFD Group):
- ShPCh.
- Purpose: Control of the rotation speed of electric motors using frequency regulation.
Those. information
VRU-VP Series Input Cabinets (VP1, VP2, PPE Models)
These cabinets are specialized electrical modules designed for integrated power supply management at a heating plant. Their key function is to ensure reliable reception, efficient distribution, and accurate metering of consumed electricity.
Cabinet Features
The VRU-VP design integrates the following key components:
- Input switches—serve for manual switching on/off of the power supply;
- Electricity meters— Record the volumes of active and reactive energy consumed;
- Control and measuring instruments include ammeters for monitoring current and voltmeters for monitoring network voltage.
Thus, VRU-VP cabinets form the basic energy metering and distribution unit, ensuring the safe and transparent operation of the heating plant`s electrical equipment.
VRU-RP Series Distribution Cabinets (Models RShU1, RShU2)
VRU-RP cabinets serve as a centralized distribution unit in the heating plant`s electrical system. Their main purpose is Proper distribution of electricity between all process consumers of the facility.
Design Features and Equipment
The VRU-RP cabinets include:
- input buses—enable the reception of electricity from the VRU-VP (VP1 and VP2) input cabinets, forming a continuous power supply circuit;
- electricity meters—record the energy consumption of the pumping equipment of the cold water supply system (CWS);
- circuit breakers— guarantee protection of circuits from overloads and short circuits;
- power control units(BNN, BNR, BRP, BPP) — Designed for efficient control of process equipment electric drives.
Thus, VRU-RP distribution cabinets are a key link in the power supply infrastructure of a heating plant, ensuring:
- reliable power transmission from input devices to end consumers;
- accurate metering of individual systems` energy consumption;
- equipment protection from abnormal operating conditions;
- centralized control of power electric drives using specialized control units.
ShAU-ChRP Series Variable Frequency Drive Cabinet (Model ShPCh)
The ShAU-ChRP cabinet is a specialized automation module designed for intelligent control of the electric drive of pumping equipment within a heating plant. Its key function is to implement frequency control and ensure a soft start of electric motors, which significantly improves the reliability and energy efficiency of the system.
Functional Equipment and Components
The cabinet design integrates the following technical solutions:
- frequency converter control units(models BPC, BRPC) — provide precise regulation of the electric motor speed by changing the supply voltage frequency;
- soft starters(model BUPP) — minimize inrush currents and mechanical loads when starting electric motors, extending the service life of the equipment;
- automatic transfer switch unit(BAVR) — Guarantees uninterrupted power supply to critical consumers during power outages;
- Circuit breakers — Provide protection for power supply circuits of first-reliability category process equipment.
First-category power supply facilities
Protected and controlled systems include:
- automation cabinets for various purposes;
- heat metering boards;
- evacuation lighting systems;
- water hardness monitors;
- insulation condition monitoring devices;
- other critical equipment requiring uninterruptible power supply.
Advantages of use
Using the SHAU-CHRP cabinet allows you to:
- optimize the energy consumption of pumping equipment;
- reduce mechanical loads on electric motors and pipelines;
- increase system reliability through soft start and power backup;
- ensure uninterrupted operation of critical heating plant systems.
