Features:
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 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 RS485 port. RS485 supports MODBUS RTU protocol for connections to EMS/SCADA.
The unit is meant for use in three phase four wire / 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, fixed window can be selected at site.
GOBLIN is a versatile meter, with all the features needed to implement a robust electrical load management system. It can be configured to suit most control and communication needs.
Technical Specifications:
| Type | Name | Statistics |
| Input | Three Phases and Neutral of a 3P4W system / Three Phases of a 3P3W system | |
| Voltage | Direct Voltage Input : up to 500V L-L & 300V L-N, PT Ratio : Site Selectable, Burden : 0.5VA | |
| Current | Secondary Current Input : 5A or 1A (Site Selectable), CT Ratio : Site Selectable, Range of Reading : 5-5000A, Burden : < 1.0VA, Overload : 5A CT -> 6A RMS Continuous & : 1A CT -> 1.2A RMS Continuous | |
| Power Supply | Auxiliary Supply : 90 - 480 VAC, 50-60 Hz | |
| Output | Relay | Four. Individually Field Programmable: Switching Voltage : Max. 250 VAC, Switching Power : Max. 1000W, Expected Mechanical Life : >10 x 106 switching operations, Expected Electrical Life @(Load = 200VA, Cosφ = 0.5) : >4 x 106 switching operations |
| Basic Measurement | Voltage (VLL, VLN) | VL-N Accuracy : 0.5% of Reading, VL-L Accuracy : 1.0% of Reading |
| Current (Amps, I(RYB)) | Accuracy: 0.25% of Reading | |
| Line Frequency | 45 to 55 Hz, Accuracy: 0.3% of Reading | |
| Power Merasurement | Active Power (P) | Accuracy: 0.5% of Reading(For IPFI>0.5) |
| Reactive Power (Q) | Accuracy: 1.5% of Reading, (Between 0.5 Lag to 0.8 Lead) | |
| Apparent Power (S) | Accuracy: 0.5% of Reading | |
| Power Factor | For Individual phases and System: PF Accuracy : 0.5% of Reading (IPFI≥0.5), Range of Reading : 0.05 to 1.00 Lag/Lead | |
| Energy Measurement | Total Active Energy (KWh) | Range of Reading: 0 to 9999999.9 KWh, Accuracy: Class 0.5 as per IS14697 |
| Total Apparent Energy (KVAh) | Range of Reading: 0 to 9999999.9 KVAh, Accuracy: Class 0.5 as per IS14697 | |
| Total Reactive Energy (KVARh) | Range of Reading: 0 to 9999999.9 KVARh, Accuracy: Class 1.0 | |
| Power Quality Measurement | 3rd to 15th Harmonics(Odd) for all Voltages with THD | |
| 3rd to 15th Harmonics(Odd) for all Currents with THD | ||
| Demand Measurement | Active Power (KW) Demand - Sliding & Fixed, Selectable | |
| Apparent Power (KVA) Demand - Sliding & Fixed, Selectable | ||
| Dimensions & MISC | Bezel | 144 X 144 mm |
| Panel Cutout | 138 X 138 mm | |
| Depth of Installation | 55 mm | |
| Display | 128 X 64 Graphical LCD | |
| Operating Temperature | 10°C to 50°C | |
| Weight | 0.65 Kgs (Approx.) | |
| Operating Current Range | 0.4% to 120% of CT primary | |
| Communication | RS485 | Modbus-RTU protocol |
| Data Logging Buffer | 2 MB, Non-volatile memory, Can hold 19691 records | |
| Logging Duration | Site selectable from 1 minute to 60 minutes | |
| USB (Pen Drive) | For downloading logged data | |
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