Products

YB27-12/0.4 prefabricated substation

Category:

Box-Type Substation

Tel:

+86-370-2020101

E-mail:

1074477171@qq.com

Inquiry

Introduction

Product overview

YB27-12/0.4 pre-installed substation is a domestic American box change. As an important power supply unit in the cable-based distribution network, the product is a complete set of pre-installed products integrating high-voltage control, protection, substation and distribution equipment, and is widely used in urban and rural distribution networks. The product will be high-voltage load switch, high-voltage fuse placed in the transformer oil, with the transformer body box or sub-box two structural forms. The oil tank adopts a fully sealed structure and is equipped with oil temperature gauge, oil level gauge, pressure gauge, pressure relief valve, oil drain valve and other components to monitor the operation of the transformer.

In order to make this product more suitable for the actual requirements of China's power grid, the company has introduced a plug-type dry fuse, the fuse does not affect the performance of the transformer oil. According to the complexity of low-voltage feed-out requirements, YBM-12/0.4 products are divided into standard, reinforced and integrated three shell forms, so that users and design units in the selection, to achieve more flexible, more economical.

Model and meaning

Use of environmental conditions

◆Ambient temperature: -30 ℃ ~ 40 ℃;

◆ Altitude: ≤ 1000m;

◆ Wind speed: equivalent to 34 m/s (not more than 700pa);

◆ Humidity: average daily relative humidity ≤ 95%, average monthly relative humidity ≤ 95%;

◆ Shockproof: horizontal acceleration is not more than 0.4 m/s, vertical acceleration is not more than 0.15 m/s²;

◆ Inclination of installation location:<3 °;

◆ Installation environment: the surrounding air is not obviously polluted by corrosive and flammable gases, and the installation site is not subject to severe vibration;

◆ When ordering this product beyond the provisions of the above conditions, you can negotiate with our company.

Main technical parameters

Product rated parameters

Rated voltage: 10KV/0.4KV high voltage switch thermal stability capacity: 20KA/26

Rated short-circuit breaking capacity of low-voltage main circuit switch: 35KA Rated voltage of high-voltage side: 10KV

High voltage side maximum voltage: 12KV low voltage distribution circuit switch rated short circuit breaking capacity: 35KA

Low voltage side rated voltage: 0.4KV high voltage load switch transfer current:>1500A

Rated frequency: 50Hz Noise level:<50dB Insulation level: (Table below)

Insulation level
Rated voltage (kV)	10			0.4
Rated voltage (kV)	Transformer	Switch to ground and interphase	Switch isolation break	0.4
Power frequency withstand voltage (kV)	35	42	48	2.5
Peak impulse withstand voltage (kV)	75	75	85	-

Performance level of S 9, S 1 0, S 1 1 series oil-immersed transformers for 1 0 k V preassembled transformer stations
Serial Number	Rated capacity (KVA)	Rated voltage		Pressure regulating range (%)	Connection Group Label	No-load current (%)		Loss (W)					Impedance Voltage (%)	Noise (dB)	temperature rise
		High pressure	Low pressure			No-load current (%)		No-load			Load
		(KV)	(KV)			S9	S10/S11	S9	S10	S11	S9	S10/S11
1	30	6 3 10	0.4 (0.69)	±5 (± 2 × 2.5)	Yyn0	2.2	2.0	130			600		4	55	Top oil temperature
2	50					2.0	1.8	170			870
3	63					1.9	1.5	200			1040
4	80					1.7	1.2	250			1250
5	100					1.6	1.1	290			1500
6	125					1.5	1.0	340	270		1800
7	160					1.4	1.0	400	310		2200
8	200					1.4	0.8	480	375		2600
9	250					1.2	0.8	560	455	400	3050	3000
10	315					1.1	0.7	670	540	475	3650	3600
11	400					1.0	0.7	800	650	570	4600	4200
12	500					1.0	0.6	960	775	680	5100	5000
13	630					0.9	0.6	1200	920	800	6200	6000	4.5
14	800					0.8	0.6	1400	1120	980	7500	7400
15	1000					0.7	0.5	1700	1320	1150	10300	9860
16	1250					0.6	0.5	1950	1560	1360	12800	12000
17	1600					0.6	0.5	2400	1880	1640	14500	14000

Note: a. According to customer requirements, the high voltage tap range of the transformer can be designed to be 2 × 2.5%.

B, according to customer requirements, the low voltage of the transformer can be designed to 0.69kV.

Performance parameter table of load switch
Rated current (A)	Rated voltage (KV)	Impulse withstand voltage (KV)	Power frequency resistance by voltage (1min.kV)	Rated short time withstand voltage (Note/)	Short circuit off Current (Ka)	Rated peak resistance Current (Ka)	Load operation Number of times	Mechanical operation Number of times
315	12	75	42	12.5/2	31.5	31.5	100	2000
630	12	75	42	16/4	40	40	100	3000