Basic Info.
Model NO.
XRNM3A- (3.6~12)/ -50
Specification
silver, ceram
Product Description
This product applies to the indoor AC 50 ~ 60Hz system with the rated voltage of 3.6~12kV, and may be used along with other protective devices (such as the switch, vacuum contactor, etc.) as short-circuit and overload protection element for the high-voltage motor and other power equipment.
Model
International model XRNM3A- (3.6~12)/ -50
Equivalent model
BS standard:
Basic parameters as per DIN standard
Product Model | Equivalent Model | Rated Voltage (kV) | Rated Current of Fuse Element (A) | Standard Size | Rated Breaking Current (kA) |
φA(mm) | L(mm) |
XRNM3A-7.2 | WDLDJ | 7.2 | 25, 31.5, 40, 50, 63 | φ51 | 292 | 50 |
WELDJ | 63, 80, 100 | φ66 |
WFLDJ | 125, 160 | φ76 |
WXLDJ | 160, 200, 224, 250, 315 | φ88 |
WFMDJ | 25, 31.5, 40, 50, 63, 80, 100, 125, 160 | φ76 | 442 |
WKMDJ | 200, 224, 250, 315 | φ76 |
XRNM3A-12 | WDLDJ |
12 | 20, 25, 31.5, 40, 50 | φ51 | 292 |
50 |
WELDJ | 50, 63, 80 | φ66 |
WFLDJ | 80, 100, 125 | φ76 |
WXLDJ | 160, 200 | φ88 |
WFMDJ | 25, 31.5, 40, 50, 63, 80, 100 | φ76 | 442 |
WKMDJ | 125, 160 | φ76 |
WXMDJ | 200, 224 | φ88 |
Outline dimensions as per DIN standard
Fig. 1 Outline drawing of XRNM3A fuse link
(1)Bus fuse
Model | Equivalent model | Rated Voltage (kV) | Rated Current of Fuse Link (A) | Main Dimensions (mm) | Rated Breaking Current (kA) |
A | B | C | D |
XRNM3A-3.6 | WDF.0 | 3.6 | 50, 63, 80, 100, 125 | 377 | 254 | 305 | Φ51 | 50 |
WFF.0 | 125, 160, 200 | Φ76 |
WKF.0 | 250, 315, 355, 400 |
XRNM3A-7.2 | WFF.0 | 7.2 | 25, 31.5, 40, 50, 63, 80, 100, 125, 160 | 486 | 403 | 454 | Φ76 | 50 |
WKN.0 | 200, 224, 250, 315, 355 |
XRNM3A-12 | WKX.0 | 12 | 25, 31.5, 40, 50, 63, 80, 100, 125, 160, 200, 224 | 683 | 600 | 650 | Φ76 | 50 |
Note: The above-mentioned are the rated parameters of single tube, and higher rated current value may be obtained through the parallel connection of fixed structure.
Outline drawing of bus fuse
Basic outline parameters of plug-in fuse
in mm
Size code Model | A | B | C | D | E | F | G |
WDF*0 | 390 | 312 | 80 | 140 | 246 | 254 | φ51 |
WEF*0 | φ76 |
WKF*0 |
WFN*0 | 500 | 461 | 150 | 160 | 266 | 403 |
WKN*0 |
WFX*0 | 690 | 659 | 350 | 160 | 268 | 600 |
Outline drawing of plug-in fuse
Main technical data:
The fuse under specified operating conditions is able to reliably break any fault current from the minimum breaking current (1.6~3) ln to the rated breaking current 50kA.
Time - current characteristic curve is as shown in Fig. 4, Fig. 5 and Fig. 6.
Current limiting characteristic curve is as shown in Fig. 7.
Rational use of fuse
The rated current of the fuse for direct start shall be selected according to the following formula
Iy=NInδ
Where,
In- full load current of motor
δ- Coefficient of colligation as shown in the following table
N- Ratio of starting current to full load current, generally N = 6
Iy-Current value during start-up
Starting Frequency n/h | 2 | 4 | 8 | 16 |
δ | 1.7 | 1.9 | 2.1 | 2.3 |
The point corresponding to ly value at the starting shall be plotted on the time - current characteristic curve, and the curve corresponding to the point or the curve on the right side of point means the fuse's curve. The rated current of fuse shall be greater than 1.3 times the full load current of motor.
Address:
No. 2055, Shanglinyuan 5th Road, High-Tech Zone, Xi′an City, Shaanxi Rovince, Xi′an, Shaanxi, China
Business Type:
Manufacturer/Factory
Business Range:
Electrical & Electronics, Security & Protection, Service, Tools & Hardware
Management System Certification:
ISO 9001
Company Introduction:
Founded on March 7, 1998, Shaanxi Zhenli Electric Power Technology Co., Ltd. (formerly known as Xi′an Zhenli Fuse Co., Ltd. ) was located in F4-402 Lutong Industrial Park, East Section of Kuangshan Road, East Er′huan, Xi′an with the industrial plants covering 1771.08 square meters. As the company business gradually expanded, it was moved to No 2055, Shanglinyuan No. 5 Road, High-tech District, Xi′an in 2017, with three self-built standard plants covering 20847.26 square meters and a total of 80 staff including 8 research staff, 6 professionals and 6 product designers. As required by High-tech District of Xi′an, the company was restructured into Xi′an Xiangyuan Zhenli Electric Co., Ltd., a high-tech enterprise specialized in research and development, production and sales of indoor and outdoor fuses whose production scale and technical level lead the industry in China. So far, the number of fuses running in the power grid in the world is more than 3 million and the company has rich experience of line operation. Its products cover the voltage within 3.6~40.5kV and the current within 0.2A~315A. Its main products belong to new-energy wind-photovoltaic power hybrid power generation system strongly supported and developed by the nation. Currently, its main clients are Schneider, ABB, TBEA, Shandong Taikai, Jiangsu Huapeng and other Top 500 enterprises in the world and listed companies in China. The products are sold as far away as Portugal, Thailand, Mexico, Pakistan and other countries.