UNDC301 Data Concentrator Unit

Overview

The UNDC301 is a new-generation Data Concentrator Unit (DCU) with integrated metering functionality. It operates as both a DCU and a main meter, featuring a high-accuracy metering engine, flexible communication options, large storage capacity, massive device access support, and robust network management capabilities.

Seamlessly integrated with Goldcard Power’s AMI system and third-party management systems, it is suitable for conventional distribution stations and revenue metering scenarios that demand high measurement accuracy with standard CT already installed.

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Integrated Metering Function

Adopts Class 0.5S active and Class 1 reactive metering accuracy for transformer consumption measurement, as well as instantaneous, load profile, historical data records and load control.

Large Matrix LCD Display

The built-in large matrix LCD supports simultaneous display of multiple measurement data, parameters, status indicators and alphanumeric information, enabling visualization access on site.

Distribution Transformer Monitoring

Monitors power quality indicators including unbalance, overload, power outage, harmonics and THD, and supports non-technical line loss calculation for distribution transformers.

Technical Specification

DCU model	UNDC301
Operating Voltage	3×57.7/100V to 3×230/400V
Voltage range	0.5 Un ~ 1.2 Un
Current range	5(10)A，1(10)A
MTBF	0.2% of Ib
Frequency	50/60Hz±5%
Temperature Range:	-40 °C ~ +70 °C

Connection Type	3P4W
Wiring Connection	L1V1L1L2V2L2L3V3L3NN
Accuracy Class	Active: CL 0.5S/1.0 (IEC62053-21) Reactive: CL 1.0/2.0 (IEC62053-23)
Communication interface	Downlink: G3-PLC, BPLC, RF MESH, Wi-SUN, PLC&RF hybrid Uplink: GPRS/3G/4G/Ethernet/Optical fiber Local maintenance interfaces: Ethernet, WiFi
Degree of protection	IP54
Insulating class	Class II