Electrical Equipment & Supplies Electrical Instruments Panel Meters

SZ-03A-K8 Three Phase Reference Standard Meter 0.02% Accuracy 5-480V 10mA-120A Range

Name: SZ-03A-K8 Three Phase Reference Standard Meter 0.02% Accuracy 5-480V 10mA-120A Range
Brand: Guangzhou GENY Electric Co., Ltd

High-precision three-phase reference standard meter with 0.02% accuracy for voltage (5-480V) and current (10mA-120A) measurements. Features harmonic analysis, waveform display, RS232/RS485 interfaces, and CE certification. Ideal for calibration laboratories and electrical testing applications requiring exceptional accuracy and stability.

Origin China

Measured Signal Pulse Peak

Installation Direct Connected

Usage Multi-Functional Energy Meter, Watt-Hour Meter, Meter for Industry and Home Use, Standard Electric Energy Meter, Prepayment Meter, Reactive Energy Meter, Multi-rate Watt-hour Meters, Maximum Demand Meter

Place of Origin CHINA

Theory Electronic Meter

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Product Description

SZ-03A-K8 Three Phase Reference Standard Meter

Application Conditions

Parameter	Specification
Operating Temperature	-10°C to +40°C
Humidity	45% to 75%
Altitude	<2500m
Voltage Supply	220V±10%, 50/60Hz±2Hz
IP Class	IP30
Certification	CE Conform

Technical Specifications

Parameter	Range	Accuracy	Display Range
Test Voltage	5V-480V	±0.02%	5.000000V-480.000V
Test Current	10mA-120A	±0.02% (50mA-120A) ±0.05% (10mA-50mA)	1.000000A-120.0000A
Phase Angle	0°-360°	±0.05°	0.000001°-359.9999°
Frequency	45Hz-65Hz	-	45.000-65.000
Dimensions	432×131×470 mm (W×H×D)
Weight	16 kg

Power Measurement Accuracy

Parameter	Accuracy
Active Power	±0.02% (50mA-120A)
Reactive Power	±0.05% (50mA-120A)
Apparent Power	±0.05% (50mA-120A)

Pulse Specifications

Parameter	Specification
High Frequency Output	1×10⁹ (0A-1A) 1×10⁸ (1A-10A) 1×10⁷ (10A-120A)
Low Frequency Output	2×10-5×CH
Pulse Ratio	1:01
Output Level	5V
Input Level	24V
Input Frequency	500Hz (Max)

Advanced Features

High precision 0.02% accuracy with long-term stability
Synchronous measurement of multiple electrical parameters
Accurate phase angle measurement with direct reactive power calculation
Vector diagram visualization for comprehensive electrical analysis
Voltage and current waveform display for detailed monitoring
Harmonic analysis and display capabilities
RS232 and RS485 interfaces for computer integration
Simple calibration using only three energy constants
Error calculation with low-frequency pulse input

Technology Overview

The SZ-03A-K8 series utilizes advanced technologies including high-speed DSP, CPLD, MCU, and ADC with self-calibration capabilities. This enables high-speed AC signal sampling and specialized digital arithmetic processing, resulting in a simplified structure while maintaining exceptional 0.02% relative error accuracy.