Goblin – Operational Manual
TRINITY
[4]
Introduction
The digital power meter GOBLIN is a micro-controller based unit which not only
measures a host of electrical parameters to display them on a 128 X 64 graphical
backlit LCD, but also acts as a comprehensive load managing device due to its four
numbers of output relay contacts. These outputs are individually field programmable
for both the parameter on which to generate alarm as well as the values on which to
activate alarm and deactivate it. In addition to this flexibility in terms of load
management, the meter also has two serial ports: USB data downloading using USB
data cable and Pen drive. In addition, RS485 supports MODBUS RTU protocol for
connections to EMS/SCADA.
The unit is meant for use in three phase four wire and three phase three wire
systems. The installation type, CT ratios and PT ratios are site selectable. The Load
Manager with its four relay contacts can be used as a Demand Controller. The
method of Demand calculation i.e. Sliding window or Fixed window can also be
selected at site.
GOBLIN is a versatile meter with a robust electrical load management system and
consists of all the features needed to implement. It can be configured to suit most
control and communication needs.
The Main features Available in this Model
Displays more than 20 Parameters
Demand and Maximum Demand
Four Relay contacts, individually field programmable, for alarm parameter as
well as on/off values
RS485 MODBUS-RTU Connectivity
Data downloading of logged data using USB port and Pen drive
Large 128 X 64 Backlit LC Display
On board 2 MB of non-volatile memory and data logging with field
programmable log duration
CT / PT Ratios field programmable
Odd Harmonic Analysis up to 15th for all voltages and currents, including
THD.
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