Bus Bar Channel Manufacturer: Bus Bar Channel Parameters and Technical Requirements

1. Dense busway performance parameters and requirements

1.1 Busbar Structure Type - Compact Busbar - Voltage Class: 380V - Voltage Withstand Level: 690V

1.2 Busbar System — AC TN-C System

1.3 Protection Level: IP55 - Rated Frequency: 50HZ - Rated Insulation Voltage: 660AC - Insulation Resistance: ≥20MΩ

1.4 The busway must be at least N-phase capacity, with the PE line requiring not less than 50% of the phase capacity. Aluminum conductor sheath may be used for grounding, but it must be removable.

The shell design with 50% of the cross-section in phase wire.

The 1.5 busway must ensure long-term stable operation under rated current.

The current density must not exceed 2A/MM at 1.6.

2

The 1.7 grounding system employs an advanced overall grounding wire design. The grounding wire encloses both the phase wire and the neutral wire, completely isolating the directly charged parts. Simultaneously, it blocks the magnetic circuit around the busbar, ensuring that the busway槽 has grounding properties, a lower inductive reactance, and enhanced harmonic resistance.

1.8 Conductor Material

2 Hardness HB ≥ 65.

The entire surface of the copper busbar must be tin-plated.

1.8.3 The material, cross-section, and manufacturing process of the neutral line are the same as those of the phase line. The equivalent cross-section of the neutral line should be equal to the equivalent cross-section of the phase line. 1.8.4 Equivalent cross-section of the grounding conductor

The cross-section should not be less than half of the phase line equivalent cross-sectional conductor to be grounded.

Insulation Material: 1.9

On September 1st, 1.9.1 Bus Insulation Medium Selection: Flame-retardant materials are used, achieving an insulation grade and heat resistance grade of A or above, capable of withstanding high temperatures up to 150℃ and low temperatures down to -60℃, and not releasing toxic gases during a fire.

The 1.9.2 insulation material utilizes a process of fully wrapping each phase copper busbar, resulting in an insulation aging life of over 30 years.

On September 1st, 2023, our product maintains its flexibility and dielectric strength under long-term exposure to environmental temperatures ranging from -5°C to 40°C without aging. The dielectric strength is ≥80KV/mm, and the tensile strength...

Bidder shall provide all relevant inspection reports for the insulating material.

1.10 Shell Material:

To ensure the strength, rigidity, and heat dissipation of the busbar channel, the outer side panels of the busbar channel system are equipped with heat-dissipating shells. Appropriate reports must be provided.

October 2nd: The new model adopts a fully enclosed design, featuring a compact structure, flexible configuration, and the ability to withstand internal and external force impacts.

The outer surface of the 10.3 groove should undergo anodizing treatment to achieve excellent corrosion resistance.

11. Other Performance Requirements

The connection requirements for solid copper conductors between busbars and transformers utilize soft connections, while the connection between low-voltage panels and busbars employ hard connections.

11.2 The busbar joints should be tin-plated or silver-plated to ensure good electrical contact performance. The contact between the joint conductors must be tin-to-tin to maintain low contact resistance.

November 3rd: Dense busbars must include solutions to prevent eddy currents and thermal stability issues caused by electromagnetic induction. Additionally, measures to reduce eddy current or hysteresis losses must be explained.

2. Corporate Qualifications and Relevant Testing Requirements

2.1 Manufacturers must provide samples of the straight sections and the first section of the connectors. The samples provided must match the actual products supplied.

2.2 Technical Qualification Documents Required by Manufacturers

Factory registered capital: 5 million RMB and above.

2.2.2 Qualification certificates and production licenses for dense low-voltage busbars.

2.2.3 Quality Certification System: Certified under the ISO 9001:2000 quality certification system or equivalent qualification.

2.3 At the rated current, the busbar trunking temperature rise must meet the requirements listed below, and a detailed temperature rise test report must be provided.

2.3.1 Under rated load condition, the temperature rise at any point within the busbar shall not exceed 55℃.

2.3.2 The shell temperature rise under rated load condition is ≤50℃

2.3.3 No point of the joint shall have a temperature rise of ≤55℃ under rated load conditions.

2.4 The over-short circuit current capacity of the busbars must meet the design requirements. Straight sections, elbows, expansion joints, etc., must pass a 7500V DC or 3750V AC high-voltage test before shipment.

2.5 Other inspection reports and technical documents. The products tested for the following certificates are supplied by the manufacturers for this bidding project.

① Verification of dielectric properties at the temperature rise limit ② Verification of short-circuit withstand strength ③ Verification of the effectiveness of the protective circuit ④ Verification of electrical clearances and creepage distances ⑤ Verification of the protection rating ⑥ Verification of resistance, reactance, and impedance ⑦ Structural strength verification

2.5.2 Temperature Rise Test Report

2.5.3 Copper Purity Test Report

2.5.4 Manufacturers must ensure the integrity, rationality, and advancedness of the entire equipment set.

Manufacturers must consider the significant diurnal temperature variations in the northwestern region; thus, a completely sealed busway must be used to prevent condensation-induced short circuit accidents.

On February 6th, manufacturers must guarantee the authenticity of the certificates and related technical documents provided. The owner reserves the right to request the original documents for verification. The owner has the right to send the products supplied by the manufacturer to a testing institution for inspection. If the products fail to meet the aforementioned requirements, the owner has the right to demand an unconditional return of the goods, and all losses incurred as a result shall be borne by the supplier.

2.7 Vendors must provide relevant performance proof from three or more domestic well-known steel enterprises, including original contracts, contract execution investigation contacts, and product operation investigation contacts.