high voltage limit current fuse for protection electrical motor(england bs standard)
Categories:High Series
□The product can be used in indoor Ac system of 50Hz and rated voltage 3.6kV and 7.2KV 12Kv. When used together with other protection facilitles(such as switches and vauum contactors),it works to protect high-volttage motor and other electric facilities from overloading and circrit break.
◆Type instruction
◆Basic parameters
Foreign TYPE
Rated voltage KV
Rated break current KA
Rated current of the fuse (A)
Rated current of the fuse link (A)
Major dimensions
A
B
C
D
XRNM1-3.6
WDF.0
3.6
50
125
63,100,125
337 (390)
254 (312)
305 (340)
51
WFF.0
200
125,160,200
76
WKF.0
400
250,315,355,400
XRNM1-7.2
WFF.0
7.2
160
25,31.5,40,50,63, 80,100,125,160
486 (500)
403 (461)
454 (150)
76
WKN.0
12
315
200,224,250,315
Note:1.The aboveid rated parameters for single pipe,the fuses can be parallel connected by fixed structure to geta high rated current. 2.Sizes in the bracket are for inserting fuses.
◆Installation Dimensios
Chat1 Busbar fuse lnstallation Dimensions
Chat2 Inserting fuse Installation Dimensions
◆Main technical characteristics
1.In required working conditions,the fuse can break any fault current between the minimum break current 1.6-3 and the rated break current. 2.See Chart 3 for time-current property.The section above the minimum break current is by dotted line. 3.See Chart 4 for current limn property. 4.See Chart 5 for l2t property.
◆Basic parameters
Type
UN(KV)
IN(A)
d×L(mm)
A(mm)
C(mm)
KA
国外参考型号
XRNM1
3.6
50
Φ51×254标准尺寸
337
305
63
WDFHO
63
80
100
125
160
Φ76×254标准尺寸
WKFHO
200
224
50
250
315
355
400
7.2
25
Φ76×403标准尺寸
486
454
63
WFNHO
31.5
40
50
63
80
100
125
160
200
50
WDNHO
224
250
Φ76×403 Φ88×403
315
12
25
Φ76×403标准尺寸
486
454
63
31.5
40
50
63
80
100
125
160
50
200
224
□These devices are suitable for a.c.50Hz,rated voltage 3.6kv.7.2kv,12kv power systems and they canbe used with other protection electric apparatus(such asload switch,vacuum contactor)as portectionof trans for mer power equipment against overloads or short-circuits.