M400

Electronic Current Burden (1A)

Electronic Current Burden M400 is used as a load in the secondary circuits of Current Transformers with secondary current 1 A during their verification and calibration

Description

FEATURES AND BENEFITS

Rated current – 1 A
Rated power range:
0,5 to 50 V·A, cosφ = 0,8 at 50 Hz
0; 0,5 to 50 V·A, cosφ = 1 at 50 Hz
Cable, contact and internal test set (Comparator) resistances are compensated by four-conductor connection
Non-breaking measuring circuit during switching of the burden
Possibility of using with automated CT calibration systems
Small size and low weight

APPLICATIONS

M400 is used by:

Manufacturers of Current Transformers
On-site testing of Current Transformers
Calibration Laboratories
Metrology Institutes

Technical specification

Name	Value
Rated current	1 A
Current range	1 … 150 %
Rated power for cosφ = 0,8	0,5; 0,75; 1; 1,25; 1,5; 1,75; 1,875; 2; 2,5; 3; 3,75; 4; 5; 6,25; 7,5; 10; 11,25; 12,5; 15; 20; 25; 30; 40; 45; 50 V·A
Rated power for cosφ = 1	0; 0,5; 0,75; 0,8; 1; 1,25; 1,5; 1,875; 2; 2,5; 3,75; 4; 5; 6; 7,5; 10; 12,5; 15; 30; 50* V·A
Active and reactive power errors	± 0,03·S** for 0,8 V·A < S < 50 V·A
	± 0,04·S for S = 0,75 V·A
	± 0,06·S for S = 0,5 V·A
	± 0,05 V·A for S = 0 V·A

* Burden power values are possible for 1 to 120 % of rated current
** Set burden power value

Power mains:
Rated voltage Rated freguency	220/230 V 50 Hz
Operating Temperature	0 … 40 °С
Relative Humidity	up to 80 % non-condensing
Size	230 × 130 × 300 mm
Weight	5 kg
Standards Safety EMC	EN 61010-1:2010 EN 61326-1:2013
Calibration Interval	2 years recommended