• Integration of high accurate reference meter and reliable power source
• Eligible to calibrate indicating meter, electrical transducer, energy meter, RTU and so on
• Accuracy: U, I, P, kWh: ±0.05%; Q, kvarh : ±0.1%
• U, I, P stability: 0.01%RG/3min; Distortion of AC Voltage and AC Current: ≤ 0.2%
• Measurement Scope:
  AC Voltage: 300mV~1000V (Single phase), 57.7V~660V (3 phase)
  AC Current: 2mA~30A (Single phase), 0.2A~30A (3 Phase)
  DC Voltage: 75mV~750V; DC Current: 100μA~30A
• Export 2nd-63rd harmonics, and measure & analyze the harmonics
• With relay output and pulse output, MTS-122 remotely controls tests of indication and information response time
• Modular design with 8” color TFT screen and user-friendly interface, easy to operate
• Automatic Calibration System can be customized according to customer’s requirements
• Exchange the testing settings and testing records thru USB
• Remotely updating online, easily achieve software updating
• With connectors of RS-232, RS-485, I/O, Ethernet, USB and WiFi, convenient for PC operation, firmware update and remote diagnosis.
• Self-protection, alarm and display overload location for output overload, Voltage short-circuit, Current open-circuit
• Self-diagnosis for amplifier failure and internal module communication failure
• Test energy meters with the accuracy of Class 0.2 and below (Class 0.05 equipment)

AC large Voltage output:
Range:                 (L1) 30V, 100V, 300V, 660V, 1000V;
                            (L2 &L3) 30V, 100V, 300V, 660V;
Adjusting range:  (0~120) %RG, RG refers to range, similarly hereafter; L1 1000V: (0~100) %RG;
Adjusting degree: 0.01%RG, 0.1%RG, 1%RG, and 10% RG
Stability:                0.01%/2min (Class 0.05), 0.02%/2min (Class 0.1)
Distortion:              ≤0.2% (Non capacitive load);
Max output load:   30V and upper gears; 20VA each phase;
Measurement accuracy: 0.05%RG (Class 0.05); 0.1%RG (Class 0.1)

AC small Voltage output:
Range: L1: 75mV, 300mV, 750mV, 3V, 7.5V;
Adjusting range: (0~120) %RG, RG refers to range;
Adjusting range: 0.01%RG, 0.1%RG, 1%RG, and 10% RG for option;
Stability: 0.02%/2min;
Distortion: ≤0.2% (Non capacitive load);
Max output load: ≥25mA;
Measurement accuracy: 0.1%RG;

AC Current output:
Range: (L1) 2mA, 2mA,10mA, 50mA, 200mA, 500mA, 2A, 5A, 10A, 30A;
(L2 & L3) 200mA, 500mA, 2A, 5A, 10A, 30A;
Adjusting range: (0~120) %RG, RG refers to range, similarly hereafter;
Adjusting degree: 0.01%RG, 0.1%RG, 1%RG, and 10% RG for option;
Stability: 0.01%/2min (Class 0.05), 0.02%/2min (Class 0.1)
Distortion: ≤0.2% (Non capacitive load);
Max output load: 20VA (30A gear); 50mA and below gear: ≥15V;
Measurement accuracy: 200mA and above gears: 0.05%RG (Class 0.05); 0.1%RG (Class 0.1);
                                             50mA and below gears: 0.1%RG (Class 0.1);

Power output
Power output stability: 0.01%/2min (Class 0.05), 0.02%/2min (Class 0.1)
Active/reactive power measurement accuracy: 0.05%RG;

Phase output
Output adjusting range: 0°~360°;
Output adjusting degree: 10°, 1°, 0.1°, 0.01° for option;
Resolution: 0.01°;
Measurement accuracy: 0.05°.

Power factor output:
Adjusting range: -1 ~ 0 ~ +1;
Measuring resolution: 0.0001;
Measurement accuracy: 0.0005

Frequency output
Adjusting range: 40Hz ~70Hz;
Output adjusting degree: 1Hz, 0.1Hz, 0.01Hz, 0.001Hz for option;
Resolution: 0.001Hz;
Accuracy: 0.002 Hz.

Harmonic setting
Harmonic times: 2^nd ~63^rd;
Harmonic content: 0~40%
Harmonic phase: 0°~359.99°
Harmonic set error: 2^nd ~31^st times: ≤±0.1%，32^nd ~63^rd times: ≤±0.2%；

DC Voltage output
Range: 100mV, 300 mV, 1V, 5V, 20V, 100V, 300V, 1000V;
Adjusting range: (0~120) %RG; 1000V: (0~100) %RG
Adjusting degree: 0.01%RG, 0.1%RG, 1%RG, and 10% RG;
Stability: 0.01%/2min (Class 0.05), 0.02%/2min (Class 0.1)
Output load: ≥50mA;
Measurement accuracy: 0.05%RG (Class 0.05); 0.1%RG (Class 0.1)
Ripple content: no more than 1%. 

DC Current output
Range: 100μA, 300μA, 1mA, 3mA, 10mA, 30mA, 100mA, 300mA, 1A, 5A, 10A, 25A, 30A;
Adjusting range: (0~120) %RG;
Adjusting degree: 0.01%RG, 0.1%RG, 1%RG, and 10% RG;
Stability: 0.01%/2min (Class 0.05), 0.02%/2min (Class 0.1)
Output load: 25A: 25VA; 5~10A: 2V; 1A and lower gear ≥30V;
Measurement accuracy: 0.05%RG (Class 0.05); 0.1%RG (Class 0.1)
Ripple content: no more than 1%. 

DC input Voltage measurement
Range: ±10V;
Measuring range: (0-150) %RG;
Basic error limit: 0.02%RG
Ripple measuring error: (5%RD + 0.1%), RD refer to ripple measured value;
Resolution: 0.001%RG.

DC input Current measurement
Range: ±20mA;
Measuring range: (0-150) %RG;
Basic error limit: ±0.02%RG
Ripple measuring error: ± (5%RD + 0.1%), RD refer to ripple measured value;
Resolution: 0.001%RG.

Energy error measurement:
Active energy basic error limit:
0.05%RD (Voltage 15V~660V, Current 0.05A~36A, PF≥0.5);
0.1%RD (Voltage 15V~660V, Current 0.02A~0.05A, PF=1);
Reactive energy basic error limit:
0.1%RD (Voltage 15V~660V, Current 0.05A~36A, PF≥0.5);
0.2%RD (Voltage 15V~660V, Current 0.02A~0.05A, PF=1);

Other parameters:
Power supply:  90-265VAC/DC
Power frequency: 50Hz~60Hz
Power consumption: 50VA~1000VA
Working environment: 20℃~30℃，Humidity: RH≤85%
Storage environment: -20℃~50℃
Size: 600(L)× 440 (W)× 176(H)mm
Weight: 30kg

MTS-122 contains 2 models with different accuracy below:
MTS-122C, Accuracy  Class: 0.05
MTS-122B , Accuracy  Class:  0.1