CET Electric Technology
I
Table of Contents
Chapter 1 Introduction...................................................................................................................... 1
1.1 Overview............................................................................................................................. 1
1.2 Features .............................................................................................................................. 1
1.3 PMC-352-C’s application in a wireless IoT based EMS using LoRa network............................2
1.4 Getting more information....................................................................................................2
Chapter 2 Installation........................................................................................................................ 3
2.1 Appearance......................................................................................................................... 3
2.1.1 Main Unit..................................................................................................................3
2.1.2 LED Indicator.............................................................................................................3
2.1.3 Split-Core CT Appearances & Specifications ...............................................................4
2.1.4 Antenna Appearances & Specifications......................................................................4
2.1.5 Connecting Cable (For 800A/40mA and 1600A/40mA SCCT only)...............................4
2.2 Dimensions.......................................................................................................................... 5
2.2.1 Unit Dimensions........................................................................................................5
2.2.2 Terminal Dimensions.................................................................................................5
2.2.3 CT Dimensions ..........................................................................................................6
2.2.4 NTC Dimensions........................................................................................................7
2.3 Mounting ............................................................................................................................7
2.4 Wiring Mode ....................................................................................................................... 8
2.5 SCCT Installation................................................................................................................ 10
2.5.1 Wiring for 5A/2mA, 100A/40mA, 200A/40mA or 400A/40mA SCCT .........................10
2.5.2 Wiring for 800A/40mA or 1600A/40mA SCCT ..........................................................10
2.6 LoRa Antenna Installation .................................................................................................. 11
2.7 RS-485 Wiring.................................................................................................................... 11
2.8 Digital Input Wiring............................................................................................................ 12
2.9 NTC Input Wiring ............................................................................................................... 12
2.10 Power Supply Wiring........................................................................................................ 12
Chapter 3 Applications.................................................................................................................... 13
3.1 Inputs................................................................................................................................ 13
3.1.1 Digital Inputs...........................................................................................................13
3.1.2 NTC Temperature Input ...........................................................................................13
3.2 Power and Energy.............................................................................................................. 13
3.2.1 Basic Measurements...............................................................................................13
3.2.2 Energy Measurements ............................................................................................13
3.2.3 Demand Measurements..........................................................................................14
3.3 Power Quality.................................................................................................................... 14
3.3.1 Phase Angles...........................................................................................................14
3.3.2 Unbalance...............................................................................................................14
3.3.3 Harmonics...............................................................................................................14
3.4 Setpoints........................................................................................................................... 15
3.5 SOE Log............................................................................................................................. 17
3.6 Diagnostics........................................................................................................................ 17
3.6.1 Voltage Phase Loss..................................................................................................17
3.6.2 Current Phase Loss..................................................................................................18
Chapter 4 Modbus Register Map..................................................................................................... 19
4.1 Basic Measurements.......................................................................................................... 19
4.2 Energy Measurements....................................................................................................... 20
4.2.1 3-Phase Energy Measurements ...............................................................................21
4.2.2 Phase A (L1) Energy Measurements.........................................................................21
4.2.3 Phase B (L2) Energy Measurements.........................................................................21
4.2.4 Phase C (L3) Energy Measurements.........................................................................21
4.3 DI Pulse Counter................................................................................................................ 22
4.4 User-defined Data Map...................................................................................................... 22
4.5 Harmonic Measurements................................................................................................... 22
