Product Description

This pre-installed substation uses a channel steel base, angle steel cabinet frame, and a unique honeycomb double-layer (composite panel) cabinet body. The exterior is solid, with excellent thermal insulation, heat dissipation, ventilation, an attractive appearance, and high protection levels.

Available exterior materials include stainless steel, aluminum-zinc steel plate, aluminum alloy, cold-rolled steel plate, and color steel plate, with intermediate flame-retardant insulation materials. Multiple styles are available, including ventilated, villa, and compact types.

Product Model and Implication

YB □ — □ — 12/0.4 (□) / □ — □ │ │ │ │ │ └── Transformer rated capacity (kVA) │ │ │ │ └────── High-voltage switchgear operating mechanism type (T-welding mechanism; S-manual mechanism) │ │ │ └────────── High-voltage switchgear main switch type (F-load switch; F.R-load switch + fuse) │ │ └────────────────── Rated voltage │ └────────────────────── Design serial number └────────────────────────── Structural feature (P-Pin shape; M-Mu shape)

Service Environmental Conditions

Altitude: 1000m and below;
Ambient temperature: -25℃~+40℃, 24-hour average temperature ≤35℃;
Wind speed: ≤35m/s;
Air humidity: ≤90% (+25℃);
Seismic acceleration: ≤0.4m/s²; vertical acceleration ≤0.2m/s²;
Installation site: No conductive dust, no corrosive, flammable, or explosive substances harmful to metals and insulation; no severe vibration, vertical inclination ≤3%;
Note: For special installation conditions, please consult and resolve with the supplier when placing an order.

Ordering Instructions

When placing an order, please provide the following information:

Primary line diagram (including cabinet capacity, circuit breakers, disconnectors, transformers, and other specifications and parameters);
When used in special environments, please specify at the time of order placement;
Sign a technical agreement as a supplement to the sales contract. All user requirements must be listed in the order and technical agreement;
The types and quantities of spare parts and accessories exceeding standard accessories shall be specified in the agreement.

Technical Parameters

No.	Item	Unit	High-voltage electrical apparatus	Transformer	Low-voltage electrical apparatus
1	Rated voltage	kV	7.2/12	6/0.4; 10/0.4	0.4
2	Rated capacity	kVA	—	Mu shape: 200~2500 / Pin shape: 50~800 / Dry-type: 50~800	Max 1250
3	Rated current	A	200~630	144/3600	100~3000
4	Rated breaking current	kA	Load switch 400~630A / Combined current depends on fuse	—	15~63
5	Rated short-time withstand current (1s)	kA	20×(2) / 12.5×(4)	—	15×1 / 30×1
6	Rated peak withstand current	kA	31.5; 50	—	30 / 63
7	Rated closing current	kA	31.5; 50	—	—
8	Power frequency withstand voltage	kV	Phase to earth/phase to phase 30/42 / Isolating clearance 34/48	Oil-immersed: 35/5min / Dry-type: 28/5min	≤300V: ≤2kV / >300V and ≤600V: 300/600V between 2.5kV/2.5kV
9	Lightning impulse withstand voltage	kV	Phase to earth/phase to phase 60/75 / Isolating clearance 75/85	75	—
10	Noise level	dB	—	Oil-immersed: <55 / Dry-type: Below 65	—
11	Protection grade	—	—	IP23D	—
12	Outline dimension	mm	According to the plan and selected high and low voltage switchgear and transformer, select the outline dimension of different sizes

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