How to Connect the Various Cables of ETP4890-A2?

Huawei ETP4890-A2 is a box-type power system that supplies power for –48 V DC communications equipment. It uses 15 A or 30 A rectifiers and provides a maximum output current of 90 A. It can apply to Huawei transmission network, access network devices like OSN9800 OSN8000, MA5600T MA5800 or even core router ME60.

It Max supports three 30A rectifiers and one monitor module SMU01A, SMU01B and SMU01C, also can support battery. This article will describe how to connect ground cable, DC AC power cables to ETP4890-A2.

1, Connecting the Ground Cable

Below picture shows how to connect the ground cable (an M6 OT terminal is used for the cable).

2, (Optional) Installing Dry Contact Signal Cables

Step 1 Press the contact plate using a flat-head screwdriver to flip the metal spring inside each dry

contact.

Step 2 Connect the signal cables to the corresponding dry contacts.

Step 3 Put away the flat-head screwdriver and check that the signal cables are securely connected.

3, Connecting the Communications Cable

Connecting a Communications Cable to the SMU01A

Connect a communications cable to the COM port on the SMU01A when you use the Web UI, NetEco, or SNMP to remotely manage the power supply system

Connecting a Communications Cable to the SMU01B

Connect the COM port on the SMU01B to the corresponding serial port on the Huawei access network communications equipment using a communications cable when you use the U2000 network management system to remotely manage the power supply system.

4, Connecting Load Cables

Step 1 Open a load cable port using a flat-head screwdriver.

Step 2 Insert a load cable into the load cable port.

Step 3 Secure the load cable by drawing out the screwdriver.

5, Connecting the AC Input Power Cable

Connecting the 220 V AC Single-Phase AC Input Power Cables

Step 1 Remove the protective cover over AC input terminals.

Step 2 Connect the neutral wire (an M6 OT terminal is used for the cable) to the N wiring terminal.

Step 3 Connect the live wire (an M6 OT terminal is used for the cable) to the L2 wiring terminal.

Connecting 110 V AC Dual-Live Wire Input Power Cables

Step 1 Remove the protective cover over AC input terminals.

Step 2 Connect the L1 live wire (an M6 OT terminal is used for the cable) to the L2 wiring terminal.

Step 3 Connect the L2 live wire (an M6 OT terminal is used for the cable) to the N wiring terminal.

Connecting the 220/380 V AC Three-Phase AC Input Power Cables

Step 1 Remove the protective cover over AC input terminals.

Step 2 Loosen the screws of L1, L2, and L3 and remove the short-circuit busbar.

Step 3 Connect the neutral wire to the N wiring terminal.

Step 4 Connect the three live wires (M6 OT terminals are used for the cables) to the L1, L2, and L3 wiring terminals correspondingly.

Step 5 Remove the plastic baffles from the side of the protective cover by needle-nose pliers.

Note:

Install a circuit breaker for upper-level device to protect the power system.

Switch the corresponding circuit breaker for the upper-level device to OFF.

Huawei published many types AC/DC power converter for telecommunication equipment, ETP4830 ETP48100 ETP4860 ETP4890, power connection of each types is different, if you do not know how to install or how to connect these cables, you can contact us for guidance.