Prefabricated Substations

YBH Series Prefabricated Substation (Chinese Box Type)

YBH Series

Product Overview

Distinct from both American and European type compact substations, the Chinese type design incorporates their advantages while avoiding drawbacks. Its unique R-method high-voltage connection, is an industry-first innovation with independent Chinese intellectual property rights, with its remarkable features: safety, reliability, convenience, and environmental friendliness.

Widely adopted in 35kV power transformation and distribution systems for photovoltaic, wind power, and other renewable energy sectors, this solution redefines industry standards through technological differentiation.

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Product Features

1. Compact Structural Design

Adopting a modular integrated layout, it occupies 40% less floor area than traditional compact substations, ideal for space-constrained scenarios like urban centers and scenic areas.

2. High-Strength Protective Enclosure

Manufactured from premium steel with IP54 protection rating, it is impact-resistant and corrosion-proof, suitable for complex outdoor environments.

3. Easy Maintenance

With zoned layout of internal electrical components and reserved maintenance access, maintenance efficiency is improved by 50%.

4. Flexible Power Supply Solution

The high-voltage side supports multiple configurations such as ring main units/circuit breaker cabinets, adapting to different power demand scales.

5. Efficient Heat Dissipation System

Featuring intelligent temperature-controlled exhaust design, it operates stably in environments ranging from -25℃ to +40℃.

Operating Conditions

● Ambient Temperature: -25°C to +40°C

● Altitude: ≤2000m

● Relative Humidity: Daily average ≤95%, monthly average ≤90%

● Seismic Resistance: Horizontal acceleration 0.4m/s², vertical acceleration 0.15m/s²

● Installation Environment: Free from severe shocks, heavy pollution, chemical corrosion, conductive dust, or explosive hazards.

Note: In case of non-compliance with normal operating conditions, please consult our company for solutions.

Technical Specifications

Items	Unit	HV electrical equipments	Transformer	LV electrical equipments
Rated voltage	kV	6/10/35	6/0.4, 10/0.4	0.4
Rated capacity	kVA		50~6300
Rated current	A	200、400、630		100~3200
Rated short-circuit breaking current	A	Load switch: 400–600A		15~63kA
Rated short-circuit breaking current	kA	Combined switch: Dependent on the fuse		15~63kA
Rated short-time withstand current	kA	16,20(4s)		15(1s)
Rated short-time withstand current	kA	16,20(4s)		30(1s)
Rated peak withstand current	kA	31.5,50		30
Rated peak withstand current	kA	31.5,50		63
1-min power frequency withstand voltage	kV	Phase-to-ground & phase-to-phase: 32/42/95	25/35 (Oil type)	≤03,2
1-min power frequency withstand voltage	kV	Isolating break: 36/48/118	20/28 (Dry type)	>0.3,2.5
ightning impulse withstand voltage (peak value)	kV	Phase-to-ground & phase-to-phase: 60/75/180	60/75
ightning impulse withstand voltage (peak value)	kV	Isolating break: 70/85/185	60/75
Enclosure protection level			IP54
Noise level	dB		35