CURRENT-VIEWING RESISTORS WSM Type

WSM-type AC/DC current-Viewing resistors are designed for precise measurement of pulsed ac- and dc currents, for instance in industrial drives, pulsed welders and plasma physics apparatuses. Moreover, they are employed in short-circuit test facilities, measurement of start currents of fuel engines etc.

PARTNER:

HILO-TEST

MARKETS:

Components ,

TEST STANDARDS:

IEC 62475 ,

Data Sheet

Dimensions

SPECIFICATIONS

CURRENT-VIEWING RESISTORS

Type WSM

WSM-type AC/DC current-Viewing resistors are designed for precise measurement of pulsed ac- and dc currents, for instance in industrial drives, pulsed welders and plasma physics apparatuses. Moreover, they are employed in a short-circuit test facilities, measurement of start currents of fuel engines etc.

Compared with other methods, WSM-type current-viewing resistors possess high bandwidth, from dc to the specified upper-frequency limit. They avoid auxiliary electronics and do not require auxiliary power. Their high electromagnetic compatibility (EMC) and robust mechanical design permit careless utilization in adverse environments.

Active parts possess rotational symmetry which, combined with a magnetic guard-ring design permits deployment of the total skin-effect limited bandwidth. The performance features result from high-precision turned and milled parts, antimagnetic nuts and bolts, vacuum brazing, laser welding etc.

TYPE		Current rating rms peak		Nominal resistanc e	Power	Impulse- load- integral	Band- width 1)	Weight
WSM15000		15 kA	150 kA	4 µW	900 W	12*109 A2s	30 kHz	62 kg
WSM10000		10 kA	100 kA	6 µW	600 W	5.0*109 A2s	30 kHz	25 kg
WSM 6000		6 kA	100 kA	10 µW	360 W	1.6*109 A2s	55 kHz	13 kg
WSM 4000		4 kA	60 kA	15 µW	240 W	5.8*108 A2s	60 kHz	9 kg
WSM 2500		2.5 kA	60 kA	24 µW	150 W	3.2*108 A2s	120 kHz	6 kg
WSM 1500		1.5 kA	60 kA	40 µW	90 W	1.0*108 A2s	200 kHz	3.3 kg
WSM 1000		1.0 kA	60 kA	60 µW	60 W	4.4*107 A2s	200 kHz	1.7 kg
WSM	600	600 A	40 kA	100 µW	36 W	1.5*107 A2s	500 kHz	1.5 kg
WSM	400	400 A	40 kA	150 µW	24 W	6.7*10 6A2s	1.5 MHz	1.5 kg
WSM	250	250 A	20 kA	240 µW	15 W	2.7*106 A2s	1.5 MHz	1.5 kg
WSM	150	150 A	10 kA	0.4 mW	9.0 W	3.6*106 A2s	1.5 MHz	1.2 kg
WSM	100	100 A	10 kA	0.6 mW	6.0 W	1.6*106 A2s	800 kHz	1.2 kg