ZF28-40.5 SF6 gas insulated combination appliance

Rated voltage：40.5kV

Rated current：Feeder current: 1250, 2000, 2500, 3150A Main bus maximum current: 4000A

Rated short-time power frequency withstand voltage (1min, RMS)：95kV、118kV

Product introduction

ZF28-40.5kV GIS equipment is a new generation of medium voltage switchgear developed according to the requirements of medium voltage 40.5kV parameters on the basis of high voltage 126kV GIS product technology. This product can be applied to power system, power generation, rail transportation, petrochemical, metallurgy, mining, building materials and other large industrial users.

This product is specially optimized for the transformation needs of the old switch cabinet. The air cabinet with a common cabinet width of 1200mm~1680mm and a cabinet depth of 2800~3200mm can be quickly transformed without moving the foundation, changing the cable, and strengthening the load bearing. This product has obtained a full set of type test reports of Xi 'an high voltage electrical appliances, and passed the new product (technology) identification organized by China Machinery Industry Federation.

Product features and advantages

Fully enclosed, gas insulated structure, eliminate air insulated switchgear condensation, insulation deterioration discharge, hair touch hot and other problems;

Three-station isolation switch, equipped with electric mechanism and one-key sequential control function. Prevent the switch cabinet manual operation stuck, tipping injury risk;

Especially suitable for old air cabinet transformation, no need to redo the foundation, no need to replace the cable, no need to outage the whole station;

Equipped with self-energizing SF6 circuit breaker, cutting reactive load without interception, with West High Court C2 class back-to-back capacitor bank breaking report;

Keep the operating habits of the switchgear products, operation and maintenance personnel can quickly adapt to the use of new products;

In line with the trend of green environmental protection, to provide mixed gas product solutions;

Environmental protection solutions for SF6/N2 gas mixtures are available.

Product parameter

Serial number	Item		unit	Parameter value
1	Rated voltage		kV	40.5
2	Rated current		A	Feeder current：1250、2000、2500、3150
				Maximum current of main bus：4000
3	Rated short-time power frequency withstand voltage (1min, RMS)	Interphase, relative, vacuum fracture	kV	95
		Isolation fracture		118
4	Rated lightning impulse withstand voltage (peak)	相Interphase, relative, vacuum fracture	kV	185
		Isolation fracture		215
5	Rated short-circuit breaking current		kA	31.5
6	Rated short-time withstand current/rated short-circuit duration		kA/s	31.5/4
7	Rated peak withstand current		kA	82
8	Rated short circuit breaking current breaking times		次	≥20
9	Rated short circuit breaking current breaking times		/	C2
10	Mechanical life of circuit breaker		次	10000（M2）
11	Three-station switch mechanical life		次	≥3000
12	Mechanical life of the faulty ground switch		次	≥3000
13	Closing capability of the fault ground switch		次	2
14	SF6 year air leakage rate		%	≤0.1
15	Service life		years	≥40
16	Loss of operational continuity category		category	LSC2B
17	Rated frequency		Hz	50/60

Next: Model ZF28-363/420 Gas insulated metal enclosed switchgear

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