The ETP4890-A2 is a box-type power system that supplies power for –48 VDC communications equipment. It uses 15 A or 30 A rectifiers and provides a maximum output current of 90 A.

2. System Features

Supports a wide voltage range of 85 V AC to 300 V AC.
Provides comprehensive battery management.
The SMU01A communicates with Huawei Network Ecosystem (NetEco) and third-party network management systems (NMSs) over various security protocols, such as the Simple Network Management Protocol (SNMP) and Hypertext Transfer Protocol Secure (HTTPS), featuring flexible networking. It provides WebUI and implements remote unattended management.
The SMU01B supports Huawei master/slave protocols and access network point-to-point protocols, which allows Huawei access network communications equipment to connect to the U2000.
Displays information on a liquid crystal display (LCD) and provides buttons for

operations.
Supports electronic labels.
Rectifiers and the site monitoring unit (SMU) are hot-swappable.
Allows high-efficiency and standard-efficiency rectifiers with the same capacity to coexist.
The rectifier power factor is 0.99.

3.System Configuration

Item	Configurations
PDU	AC input	220 V AC single-phase (default mode) 110 V AC dual-live wire 220/380 V AC three-phase, four-wire
	DC power distribution	Battery circuit breaker	One 1-pole 80 A circuit breaker
		Load circuit breaker	Two 1-pole 40 A circuit breakers, one 1-pole 30 A circuit breaker, and one 1-pole 10 A circuit breaker
SMU	The following SMUs are supported: l One SMU01A l One SMU01B l One SMU01C
Rectifier	The following rectifiers are supported: l Two to three R4830G1s l Two to three R4830N2s l Two to three R4815G1s l Two to three R4815N1s NOTE l The R4830G1 and R4830N2 can be installed together. l The R4815G1 and R4815N1 can be installed together.