UNDC301 Data Concentrator Unit

Overview

The UNDC301 is a new-generation Data Concentrator Unit (DCU) with integrated metering functionality. It comes Rogowski coil and voltage clamp, operates as both a DCU and a main meter, and features an ultra-wide current measurement range, quick installation, 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 ideal for distribution transformer monitoring and line loss reduction, especially for heavy-load circuits, space-limited installation and on-site renovation projects.

Highlight

Detachable Rogowski Coils & Voltage Clamps

Four removable Rogowski coils and detachable voltage piercing clamps equipped with 4-pole fuses enable fast installation without busbar disconnection and reliable equipment operation.

Ultra-wide Current Measurement Range

Up to 3000A current coverage to suit various current specifications without component replacement, delivering outstanding universality for diverse field applications.

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