XNKBS01 Outdoor Packaged Sub-Section Post

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Sub-section post takes the switching function, to distribute power and link the power source and distribution network. It is the extension of power source busbar, which increases the number of power source. The application of sub-section post solves several problems, such as lack of outgoing lines of substation and restriction of outgoing line corridor. It reduces the investment and upgrades the structure of power grid.

Product introduction

Working Conditions:
1. Altitude: ≤1000m
2. Maximum ambient temperature: + 40℃
3. Minimum ambient temperature: -25℃
4. Maximum daily temperature difference: 25K
5. Indoor humidity: daily average ≤95%, monthly average ≤90%
6. Earthquake resistance: horizontal acceleration 0.2g, vertical acceleration 0.1g, applied simultaneously; using resonance, sine and beat wave test method; exciting 5 times every 2s, 5 waves per time, safety factor ≥1.67
7. No gas, vapor, chemical deposit, dust or pollution that might affect the insulation of load switch; no explosive or corrosive medium
8. Applicable for unearthed system, or 10kV system earthed through low resistance or arc suppression coil

Technical Parameters:

No.	Items		Units	Values
				Load Switch	Combined Devices
1	Rated Voltage		kV	12
2	Rated Frequency		Hz	50
3	Rated Current		A	630	200
4	Rated Load Breaking Current		A	630	630
5	Rated Short Time Withstand Current (Valid Value)		kA	20kA
6	Rated Short Circuit Duration Time		s	3s
7	Rated Peak Withstand Current		kA	50 / 63
8	Closed Loop Breaking Current		A	630
9	Rated Cable Charging Breaking Current		A	25
10	Rated No-Load Transformer Breaking Current		A	16
11	Rated Breaking Transfer Current		A		1750
12	Prospective Short Circuit Breaking Current of Fuse Protector (Valid Value)		kA		63
13	Earthing Switch Short Time Withstand Current /Duration Time		kA	25kA/1s
14	Rated Current Breaking Times		Number of Times	≥200
15	Mechanical Life		Number of Times	≥2000
16	Annual Leak Rate of SF6 Gas			≤1%
17	1min Power Frequency Withstand Voltage (Valid Value)	Breaking	kV	48
		Phase to Phase	kV	42
		Phase to Ground	kV	42
	Lightning Impulse Withstand Voltage (Peak Value)	Breaking	kV	85
		Phase to Phase	kV	75
		Phase to Ground	kV	75
18	Spring Operating Mechanism			Manual, or upgraded to electric
19	Operating Voltage		V	DC 48V/ AC 220V
21	External Insulation Creepage Distance		mm/kV	≥20
22	Non-Simultaneity While Opening		ms	<5
23	Non-Simultaneity While Closing		ms	<5
24	Major Loop Resistance		uΩ	<140
25	IP Code of Cabinet Shell			IP4X