• High stability, low waveform distortion;
• 8 inch color touch screen, interface friendly, easy to operate;
• Equipped with RS232, Ethernet, and WiFi interface, SPS-331 can either support stand-alone operation, PC control or handy wireless terminal control;
• Communicate with tested meter thru RS485;
• Customize and develop the automatically adjustment and calibration system;
• Self-protection, alarming and displaying overload location for equipment output overload, Voltage short-circuit, Current open-circuit;
• Automatically detect, diagnose and alarm for failure.
• Remotely updating online, easily achieve software updating;
• Supports calibration at users’ side.

AC voltage output
AC large voltage output
Range: (Phase A) 30V, 100V, 300V, 660V, 1000V
(Phase B, C) 30V, 100V, 300V, 660V
Adjustment range: (0~120) %RG, RG refers to range, similarly hereafter; Phase A 1000V: (0~100) %RG
Adjustment resolution: 0.01%RG, 0.1%RG, 1%RG, 10%RG for option
Stability: 0.005%/1min (0.05 class), 0.01%/1min (class 0.1)
Distortion: ≤0.1% (Non-capacitive load)
Output maximum load: 25VA each phase (resistive load)
Accuracy: 0.05%RG (0.05 class), 0.1%RG (class 0.1)

AC small voltage output
Range: phase A: 75mV, 300mV, 750mV, 3V, 7.5V
Adjustment range: (0~120) %RG, RG refers to range, similarly hereafter
Adjustment resolution: 0.01%RG, 0.1%RG, 1%RG, 10%RG for option
Stability: 0.005%/1min (0.05 class), 0.01%/1min (class 0.1)
Distortion: ≤0.1% (Non-capacitive load)
Output maximum load: ≥ 25mA
Accuracy: 0.1%RG (class 0.1)

AC current output
Range: phase A: 500uA, 2mA, 10mA, 50mA, 0.2A, 0.5A, 2A, 5A, 10A, 30A\
Phase B, C: 0.2A, 0.5A, 2A, 5A, 10A, 30A
Adjustment range: (0~120) %RG, RG refers to range, similarly hereafter
Adjustment resolution: 0.01%RG, 0.1%RG, 1%RG, 10%RG for option
Stability: 0.005%/1min (0.05 class), 0.01%/1min (class 0.1)
Distortion: ≤0.1% (Non-capacitive load)
Output maximum load: 25VA each phase (resistive load)
Measurement accuracy: 200mA and above ranges: 0.05%RG (Class 0.05); 0.1%RG (Class 0.1)
                                       50mA and below ranges: 0.1%RG (Class 0.1)
Power output
Power output stability: 0.01%/2min (class 0.5), 0.02%/2min (class 0.1)
Active, reactive power measurement accuracy: 0.05%RG (class 0.5), 0.1%RG (class 0.1)

Phase angle output
Output adjustment range: 0°~360°
Output adjustment resolution: 10°, 1°, 0.1°, or 0.01°
Resolution: 0.01°
Accuracy: 0.05°

Power factor output
Adjustment range: -1 ~ 0 ~ +1
Measurement resolution: 0.0001
Accuracy: 0.0005

Frequency output
Adjustment range: 40Hz ~70Hz
Output adjustment resolution: 1Hz, 0.1Hz, 0.01Hz, 0.001Hz for option
Resolution: 0.001Hz
Accuracy: 0.001 Hz

Harmonic setup
Harmonic order: 2^nd ~63^rd
Harmonic amplitude: 0~40%
Harmonic angle: 0°~359.99°
Harmonic setup error: 2^nd ~31^st: ≤±0.1%; 32^nd ~63^rd≤±0.2%

DC voltage output
Range (4 lines): 100mV, 300 mV, 1V, 5V, 20V, 100V, 300V, 1000V
Adjustment range: (0~120) %RG; 1000V: (0~110) %RG
Adjustment resolution: 0.01%RG, 0.1%RG, 1%RG, 10%RG
Stability: 0.005%/1min (class 0.05), 0.01%/1min (class 0.1)
Ripple amplitude: ≤1%RG (Non-capacitive load)
Output load: 20V and above ranges: ≥10mA; 5V and below ranges: ≥25mA
Accuracy: 0.05%RG (class 0.05), 0.1%RG (class 0.1)

DC current output
Range: 1mA, 3mA, 10mA, 30mA, 100mA, 300mA, 1A, 5A, 10A, 15A, 25A
Adjustment range: (0~120) %RG
Adjustment resolution: 0.01%RG, 0.1%RG, 1%RG, 10%RG
Stability: 0.005%/1min (0.05 class), 0.01%/1min (class 0.1)
Ripple amplitude: ≤1%RG
Output load: 25A: 25VA，other ranges ≥ 2V; 300mA and below ranges ≥25V
Accuracy: 10mA and above ranges: 0.05%RG (class 0.05), 0.1%RG (class 0.1)
1mA, 3mA range: 0.1%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)

General parameters
Power supply:                90~265VAC/DC
Frequency:                     50Hz~60Hz
Consumption:                 50VA~1000VA
Environment condition:   20℃~30℃，relative humidity≤85%
Storage environment:    -20℃~50℃
Size:                               600mm (L) × 440mm (W) × 176mm (H)
Weight:                           28Kg

SPS-331 contains 2 models with different accuracy below:

SPS-331C, Accuracy Class: 0.05

SPS-331B, Accuracy Class: 0.1