The CheckSystem 2.3 portable test system consists of an integrated three-phase current source and a three-phase electronic reference standard of accuracy class 0.2. Characteristic features of the CheckSystem 2.3 are its wide measuring range, high accuracy and high tolerance to unwanted external influences. The CheckSystem 2.3 allows the monitoring of meter installations as well as analysis of the local mains conditions.

MTE CheckSystem 2.3 Three Phase Test System with Reference 16 A

Quantity

General

Auxiliary supply:	Power may be taken from the auxiliary sup- ply or the measuring circuit at: 88 VACmin ... 264 VACmax / 47 … 63 Hz 125 VDCmin … 372 VDCmax Protection: up to 440VACmax
Voltages Operation	10 V … 300 V
Synchronisation	10 V … 300 V
Power consumption:	max.150 VA
Housing:	Hard Plastic
Dimensions:	W 273 x H 247 x D 178 mm
Weight:	approx. 6.2 kg (excl. accessories)
Operation temperature:	-10 °C ... +50 °C
Storage temperature:	-20 °C ... +60 °C
Relative humidity:	£ 85% at Ta £ 21°C
£ 95% at Ta £ 25°C, 30 days / year spread

Safety	CE certified
Isolation protection:	IEC 61010-1:2001
Measurement Category:	300V CAT III
Degree of protection:	IP-65 (housing closed)
IP-30 (housing open)

CURRENT SOURCE

Current Range	1 mA … 16 A
Output power	15 VA (per phase)
	Internal Ranges	Smax / Umax
1 mA … 6 mA	10 mVA / 1.67 V
6 mA … 60 mA	100 mVA / 1.67 V
60 mA … 0.6 A	1 VA / 1.67 V
0.6 A … 6 A	10 VA / 1.67 V
6 A … 16 A	15 VA / 0.94 V
Resolution	0.2 % of end of internal range
Accuracy	≤ 0.2 % of end of internal range
Distortion Factor	≤ 0.8 %
Stability	≤ 0.03 % (30 min.)
≤ 0.1 % (1 h)
Load Regulation	≤ 0.01 % (from 0 % … 100 % load)
Power Factor of Load	1 – 0.1 ind.
Bandwidth	30 Hz … 1 kHz (-3 dB)
Phase Angle	Range	Accuracy	Resolution
-180° ..+180°	± 0.2°	0.1°
Frequency	Range	Accuracy	Resolution
Mode Line (synch. to input voltage)	40 Hz-70 Hz
Mode NUM	40 Hz-70 Hz	± 0.01 Hz	0.01 Hz

REFERENCE STANDARD - Measurement Range

Measuring Quantity	Range	Input / Sensor
Voltage (phase - neutral)	10 V … 300 V	U1, U2, U3, N
Current	1 mA … 16 A	I1, I2, I3
10 mA … 120 A	UCT 120.3 CT 120A

REFERENCE STANDARD - Measurement Accuracy

Voltage / Current	£ ± E [%] 1 2
Measuring Quantity	Range	Class 0.2
Voltage (U1, U2, U3, N)	46 V … 300 V	0.2
10V … 46 V	1.0
Current direct (I1, I2, I3)	10 mA … 16 A	0.2
1 mA … 10 mA	0.2
Current CT 120 A UCT 120.3	100 mA … 120 A	0.2
10 mA … 100 mA	1.0