Xrnt-40.5q Current Limiting Fuse For Protection Of Transformer Of Wind Power Station

XRNT-40.5 full range high voltage current limiting fuse is for transformer protection, it suitable for power system of rated AC frequency 50HZ, rated voltage 40.5KV . As a power transformer and other power equipment overload and short circuit protection element. They are mainly installed in the American box transformer oil, with the transformer, load switch box,  and will not produce any pollution to the transformer oil. The backup melt inside the fuse will break the short-circuit current when the short-circuit current passes through the fuse. The overload melt and backup melt are installed in series in the fuse casing inside the high voltage current limiting fuse. When the overload current exceeds the specified value for a certain time, the overload melt inside the fuse is melted and the circuit is cut off. The product is widely used in wind power generation, solar power generation, tidal power generation and other equipment distribution protection, this fuses can be equipped with fuses action trigger device, for the control system to break the circuit or send fuses and other indicating signals. The product is convenient to replace the fuse, the time current characteristic curve is stable, the error is only plus or minus 10%, the current limiting characteristic is remarkable, the minimum breaking current is 2 times of the rated melt current, the maximum breaking short-circuit current capacity can reach 31.5KV. 

1. Working conditions :
a, The ambient temperature is not higher than +40 degrees Celsius and not lower than -40 degrees Celsius.
b, Elevation between 1000m and 4000m, as shown in below table .

Model number	Product applicable altitude (m)	A	B
XRNT-40.5Q/(25-63)-31.5-1	2000 meters or less	1200	1290
XRNT-40.5Q(25-63)-31.5-2	2000 meters - 3000 meters	1300	1390
XRNT-40.5Q(25-63)-31.5-3	3000 meters - 4500 meters	1400	1490

c, The relative humidity should not be more than 90% of the daily average.
d, The surrounding air should be free from corrosive gas or flammable gas pollution.
e, The fuse outer barrel can withstand the leakage of transformer oil at 105 degrees Celsius for a long time.
2. The fuse rated current and transformer capacity can be selected according to the below table :

Transformer capacity (kVA)	Fuse model number	Rated current  of fuse (A)
1000	XRNT-40.5/ XRNT-31.5 (X is Altitude code)	31.5
1250		40
1600		50
2000		63
2350		80
2500		100

3. See below table for the insulation level of fuses:
 

Rated current (KV)	Rated peak lightning impact withstand voltage (positive and negative) KV		Rated 1 min power frequency withstand voltage (effective value) KV
40.5	To the ground and Interphase	Fracture	To the ground and Interphase	Fracture
	190	220	95	110

4. Fuse structure:

1.Are you manufacture?
We are a professional factory with more than 10 years of experience,Our projects supplied to Airprot/Subway/Railway/power station.

2.What is your technical advantages?
Our engineers worked in the power distribution industry field for 20~30 years.In particular, in non-standard customization of electric field, High altitude, non-standard voltage frequency field.

3.What is your price advantages?
we have 5 branch factories for electric components,all raw materials are one stop shopping,so we can save the value for you!

4.How about your quality advantage?
We are 100% guarantee the quality for 3 years.

5.How about your delivery time?
The delivery time with 7-10 working days after get your deposit. Our factory is located in Xi'an , China. In terms of quality and strength, we are both ahead of the market .

6.We can accept payment way:

TT/LC/DP /STS ORDER