M401

Electronic Current Burden (5A)

Electronic Current Burden M401 is is designed to provide a programmable burden in the secondary circuits of current transformers during verification, calibration, and testing. The device is intended for use with current transformers having a nominal secondary current of 5 A

Description

FEATURES AND BENEFITS

Wide range of burden values according to standards: IEC 61869-2, IEC 60044-1, IEEE C57.13
Rated current – 5 A
Rated power range: 0,5 to 50 VA, cos φ = 0,8 at 50 Hz 0; 0,5 to 50 VA, cos φ = 1 at 50 Hz
Input cable, contact and internal test set resistances are compensated by four-conductor connection
Non-breaking measuring circuit during switching of the burden
Possibility of using with automated current transformer calibration systems
Small size and low weight

VERSIONS

Electronic Current Burden М401 is available in two versions:

М401.1 allows current transformer calibration in secondary current range 1…120 % of rated current
М401.2 allows current transformer calibration in secondary current range 1…150 % of rated current

APPLICATIONS

Electronic Current Burden M401 is used by:

Manufacturers of Current Transformers
On-site testing of Current Transformers
Calibration laboratories
Metrology institutes

Technical specification

Specification	Value
Rated current	5 A
Current range	1…150 %
Rated power for cos φ = 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 VA
Rated power for cos φ = 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* VA
Active and reactive power errors	± 0,03·S** for 0,8 < S < 50 VA
	± 0,04·S for S = 0,75 VA
	± 0,06·S for S = 0,5 VA
	± 0,05 VA for S = 0 VA

* Burden power values are possible for 1 to 120 % of rated current.

** Setted 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 (W × H × D)	250 × 140 × 330 mm
Weight (Main unit)	5 kg
Standards Safety EMC	EN 61010-1:2010 EN 61326-1:2013