Moxa PT-G7728 Modular Layer 2 Managed Switch

What the PT-G7728 does on the plant network

PT-G7728 is listed by Moxa as: Layer 2 modular managed Ethernet switch with 2 100/1000BaseSFP and 2 10/100/1000BaseT(X), 6 slots for Ethernet modules and 2 slots for power modules, for a maximum of 28G ports total. A modular Layer 2 rackmount managed switch with six slots for Ethernet modules and two for power modules, up to 28 gigabit ports in total, with hardware IEEE 1588v2 PTP.

On the datasheet side, the power input is With PWR-HV-P48 installed:; 110/220 VDC/VAC for the switch system; 48 VDC for PoE system (53 to 57 VDC is recommended for PoE+ devices); ; With PWR-LV-P48 installed:; 24/48 VDC for the switch system; 48 VDC for PoE system (53 to 57 VDC is recommended for PoE+ devices); ; With PWR-HV-NP installed:; 110/220 VDC/VAC for the switch system; ; With PWR-LV-NP installed:; 24/48 VDC for the switch system; operating temperature is -40 to 85°C (-40 to 185°F); dimensions are 443 x 44 x 280 mm (17.44 x 1.73 x 11.02 in); weight is 3080 g (6.8 lb); the enclosure is rated IP30.

Standards and approvals printed for this model include railway standard EN 50121-4; safety standard IEC 62368-1; UL 62368-1. Approvals can differ between variants of a series, so check the one on the exact order code.

Technical specifications

Where it fits and what to check

It is aimed at substation-class networks and large industrial cores where the interface mix and power redundancy are configured by module; check the datasheet for the specific standards it lists.

On the practical side, mounting is listed as 19-inch rack mounting; the stated MTBF is 583,604 hrs; the warranty period is 5 years. Treat the MTBF as a manufacturer prediction under its stated method, not a guarantee for your site.

Before ordering, confirm the line modules, power modules and SFPs you need, since the interface and power modules are chosen separately (see the datasheet ordering section). Seven Star LLC is an independent supplier in Muscat and quotes against the exact code you give us.

Related MOXA products: Moxa EDS-G508E 8-Port Managed Ethernet Switch, Moxa ICS-G7528A 28-Port Gigabit Rackmount Managed Switch, Moxa EDS-G512E-4GSFP 12-Port Full Gigabit Managed Switch, Moxa EDS-2008-EL 8-Port Fast Ethernet Unmanaged Switch, Moxa EDS-405A-PTP 5-Port Managed Switch with PTP and Moxa ICS-G7826A-20GSFP-2XG-HV-HV-T L3 Gigabit Managed Switch.

Features for substation automation

Moxa’s datasheet lists several functions aimed at power utility networks:

• IEC 61850-3 Edition 2 Class 2 compliance for EMC, plus IEEE 1613, so the switch can be installed in substation control rooms and relay panels.
• PRP (IEC 62439-3 Clause 4) and HSR (Clause 5) interface modules for zero-recovery-time redundancy.
• IEEE 1588 hardware time stamps, supporting the IEEE C37.238 and IEC 61850-9-3 power profiles for precise time synchronisation of protection relays and merging units.
• GOOSE Check for easier troubleshooting of GOOSE messages.
• A built-in MMS server based on the IEC 61850-90-4 switch data model, so power SCADA can monitor the switch like any other IED.

Immunity levels and reliability

EMS test levels include IEC 61000-4-2 ESD (8 kV contact, 15 kV air), IEC 61000-4-3 radiated immunity of 20 V/m from 80 MHz to 1 GHz, and 4 kV EFT and surge on both power and signal lines. The switch also meets EN 50121-4 for railway use. Moxa states an MTBF of 583,604 hours (Telcordia) and a 5-year warranty. Interface and power modules are hot-swappable, and power modules are available for 24/48 V DC and 110/220 V AC/DC supplies.

Documents and quotation

The Moxa datasheet for this family (moxa-pt-g7728-series-datasheet-v2.4) is attached to this page. Request a quotation with the exact order code, quantity and delivery location, and we will respond with availability.

More products in this range: Industrial Communications.