mpec SA380-IT, Руководство пользователя

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monitored circuit are active in the event of transient earth faults.
Fault contact open Fault contact closed
SA380-IT powered down SA380-IT powered and fault free
Hardware fault
Earth fault
2.9.2 Auxiliary Power Supply
A external power supply is provided to power external sensors or equipment. The specification is:
5 Volts
1 Watt
Galvanically isolated from all other circuits except for RS485.
2.9.3 Serial RS485 Data Port
A serial RS485 port is provided to allow serial data communications between the SA380-IT and another device.
These features are yet to be implemented in software, but are envisioned to facilitate the following:
Connection to MPEC SA380TX data loggers
Connection to smaller down-stream earth continuity or earth leakage testers and sensors.
2.9.4 GSM & Ethernet Connection
The SA380-IT features an internal GPRS modem with factory fitted SIM, and an Ethernet controller. Configuration of the SA380-IT and
reporting of data is possible using both interfaces.
Both communication bearers allows continuous reporting of all measured values to an Enterprise Asset Management System (EAMS).
Operation and configuration of these Enterprise asset management systems is beyond the scope of this user guide.
On-site configuration via Apple devices, such as iPhone or iPad, is supported via a "Lightning to Ethernet" cable connected between Apple
device and SA380-IT.
A custom App named " " is available from the Apple AppStore that supports this cable. (See section 4.3.1 for details). SA380-IT
Configuration and interrogation is explored in depth in section 4.4.
2.11) Data Acquisition
The SA380-IT processes data before display to the user and transmission to an Enterprise Asset Management System. (EAMS)
The following quantities are sampled and sent back to the EAMS:
Name Quantity: Units: Notes
Monitored Circuit Voltage U
m
V Reported for all five circuits
Resistance to Earth (Negative Leg)
R
N
k Reported for all five circuits
Enterprise asset management systems can be be utilised to monitor long term asset trends and forewarn of asset failure. Presently
two such systems are supported:
Product Vendor Web-Link
Centrix MPEC Centrix Documentation
Network Rail Intelligent Infrastructure Network Rail / Thales http://www.networkrailconsulting.com/s
ervice/remote-condition-monitoring
The Lightning to Ethernet Cable (MPEC part number SA380-IT-LE) is sold as a separate accessory and is not normally included
with the device (see section 6.3).