Standards

NB/T 11387-2023 Measurement and evaluation of vibration for screw expansion machine

Publish Date: 2023-12-28

NB/T 42057-2023 Low-voltage Static Var Generator (LVSVG)

This standard specifies the model naming and product classification of low-voltage stationary reactive power generators, their operating conditions, electrical wiring and component equipment, technical requirements, test methods, inspection rules, as well as requirements for marking, nameplates, packaging, transportation, and storage. It is applicable to low-voltage stationary reactive power generators used in AC power systems with a nominal voltage of 1,000 V (1,140 V) and below, and a frequency of 50 Hz, which are designed to improve power factor and power quality.

Publish Date: 2023-12-28

NB/T 11386-2023 Screw Expansion Machine, Rotor Dynamic Balancing

Publish Date: 2023-12-28

NB/T 11397-2023 Joint grate biomass boiler technical specifications

This document specifies the models and parameters of co-firing biomass boilers, general requirements, performance, safety, environmental protection and energy-saving requirements, technical requirements, feeding systems, other requirements, auxiliary machinery and accessories, safety protection and control, painting, packaging and accompanying documents, boiler installation acceptance and commissioning, as well as quality responsibilities. This document is applicable to co-firing steam or hot water boilers that burn pure solid biomass fuel with a rated evaporation capacity of 35t/h to 220t/h or a rated thermal power of 29MW to 168MW, using water as the working medium. Other capacity co-firing biomass boilers can refer to this standard for implementation.

Publish Date: 2023-12-28

NB/T 11385-2023 Screw Expansion Machine Pressure-bearing Component Hydraulic Test Technical Specification

Publish Date: 2023-12-28

NB/T 11396-2023 Biomass gasification multi-combination fluidized bed gasifier technical specifications

This document specifies the requirements for the design, manufacture, inspection, testing, installation, and factory data of biomass gasification cogeneration fluidized bed gasifiers. This document is applicable to biomass gasification cogeneration fluidized bed gasifiers with a single-machine processing capacity of not less than 0.5t/h for agricultural and forestry biomass raw materials (hereinafter referred to as "biomass raw materials").

Publish Date: 2023-12-28

NB/T 11395-2023 The technical specifications for fixed bed gasifier multi-gasification plant based on biomass gasification are as follows

This document specifies the requirements for the design, manufacture, inspection, testing, installation, and factory data of fixed-bed gasifiers for biomass gasification and cogeneration. This document is applicable to fixed-bed gasifiers for biomass gasification and cogeneration with a single-machine processing capacity of not less than 0.5t/h for agricultural and forestry biomass raw materials (hereinafter referred to as "biomass raw materials").

Publish Date: 2023-12-28

NB/T 11394-2023 High-altitude environment for a 27.5kV system air gap altitude correction

This document specifies the altitude correction method for air gaps in 27.5 kV ground power supply systems in plateau environments. This document is applicable to the altitude correction method for air gaps in 27.5 kV ground power supply systems in areas with altitudes ranging from 1,000 m to 5,500 m. The 35 kV system can be referenced for implementation.

Publish Date: 2023-12-28

NB/T 11393-2023 High-altitude power equipment laser charging rust removal technology guidelines

This document specifies the technical requirements for laser charged rust removal operations, clarifies the conditions restricting laser charged rust removal, proposes requirements for laser charged rust removal equipment, describes the preparation for rust removal and the rust removal methods, and stipulates the rust removal effect and safety measures. This document is applicable to laser charged rust removal operations for power equipment with an AC rated voltage of 3.6kV to 126kV in areas with an altitude of 1000m to 5000m.

Publish Date: 2023-12-28

NB/T 11392-2023 Photovoltaic Inverter High Accelerated Life Test Technical Specification

This document specifies the general requirements and test contents for high-accelerated life testing of photovoltaic inverters, including low-temperature step-stress testing, high-temperature step-stress testing, rapid temperature cycling testing, vibration step-stress testing, and combined rapid temperature cycling and vibration step-stress testing. This document is applicable to high-accelerated life testing during the R&D, design, and/or trial production phases of photovoltaic inverters. For high-accelerated life testing of photovoltaic inverter components, this document can be used as a reference for implementation.

Publish Date: 2023-12-28

NB/T 47033-2023 Thermal Condensation and Pressure Reduction Device

This document applies to steam-operated steam temperature reducing and pressure reducing devices, steam temperature reducing devices, and pressure reducing devices (hereinafter referred to as "devices"). The parameters of the imported steam are as follows: the working pressure is not more than 35 MPa, and the working temperature is not more than 625 °C.

Publish Date: 2023-12-28

NB/T 47029-2023 Aluminum and aluminum alloys forged parts used in pressure vessels

This document is applicable to aluminum and aluminum alloy forgings used in pressure vessels with a design pressure not exceeding 16 MPa.

Publish Date: 2023-12-28