Satec EM920 Installation Manual User Manual

EM920 POWER QUALITY AND REVENUE METER Installation Manual BG0481 Rev. A1

Chapter 4 Chapter 2 Installation The eXpertmeter™ EM920 Socket meter is designed to mount into a standard meter socket. Follow the Installation s

Chapter 2 Installation 5 Mechanical Installation Refer to the figures provided in this section to properly perform the mechanical installation.

Chapter 6 Physical Description Device Structure Figure 3: EM920 internal structure Optional Modules location Figure 4: EM920 internal structure

Chapter 2 Installation 7 Meter External connections Figure 5:Meter Base – rear view

Chapter 8 Electrical Installation Before installing, ensure that all incoming power sources are shut OFF. Failure to observe this practice can re

Chapter 2 Installation 9 Figure 7: Four Wire WYE Connection No PTs Using 3CTs - Wiring Setup: 4Ln3 Figure 8:Four Wire WYE Connection Using 3 PTs

Chapter 10 Figure 9: Four Wire DELTA Connection Using no PTs and 3(4) CTs - Wiring Setup: 4LL3 Figure 10: Four Wire DELTA Connection Using 3 P

Chapter 2 Installation 11 Figure 11: Three Wire DELTA Connection Using no PTs and 2 CTs - Wiring Setup: 3OP3 Figure 12: Three Wire DELTA Connect

Chapter 12 Input / Output ports options Before I/O Module installation ensure that all incoming power sources are shut OFF. Failure to observe t

Chapter 2 Installation 13 Optional I/O modules 8DI The 8DI module consists of eight status inputs detection. To install the 8DI module follow instr

ii DANGER This symbol indicates the presence of dangerous voltage within and outside the product enclosure that may constitute a risk of electric s

Chapter 14 Relay Outputs (6RO – optional module) The 6RO module consists of: four FORM C (SSR) and two FORM A (EMR) relay outputs. To install the

Chapter 2 Installation 15 Figure 18: 4AO Connection It is recommended to connect unused Analog output channels to Common terminal. ⇒ The 4AO m

Chapter 16 Communications options The EM920 has several communication alternatives depending on your ordering preferences. All communications por

Chapter 2 Installation 17 USB Communication port (USB – on board) The EM920 provides a standard full speed USB DEVICE port. The USB DEVICE port co

Chapter 18 To install the GSM/GPRS module follow instructions: 1) Remove the plastic cover 2) Remove the body shield 3) Plug-in the module in

Chapter 2 Installation 19 Figure 23: ETHERNET module RS-485/232 Communication port (COM4 – ETH optional module) The RS-485/232 Communication port

Chapter 20 RS-232 mode In the RS-232 mode, the 485/232 wire must be tied to GND wire as shown in figure 25 Figure 25: Serial Communication Conne

Chapter 2 Installation 21 Auxiliary Power Supply AC/DC Auxiliary Power Supply The EM920 can be equipped with additional power supply to redundant t

Chapter 22 Chapter 3 Communications 1. Communications Computer Connections – RS-232 Figure 28: RS-232 Simple 3-wire Connection , 25

Appendix: Technical Specifications 23 Chapter 4 Replacing the Battery When the battery level drops below the minimum allowed threshold, the LCD gr

iii relief to reduce mechanical strain on the screw terminals, if necessary. 6. Only qualified personnel familiar with the instrument and its associa

Appendix: Technical Specifications 24 Appendix: Technical Specifications Inputs Ratings AC Voltage inputs Va, Vb, Vc and Vref - 50/60Hz High input

Appendix: Technical Specifications 25 Power Supply Power supply Supplied from Monitored Voltage inputs Three Phase PS, Rated Inputs 50/60 Hz 57.7

Appendix: Technical Specifications 26 SSR – 4 relays (FORM C) 0.15A @ 250V AC/DC Operation time Release time 1 ms 1 ms Insulation Dielectric with

Appendix: Technical Specifications 27 Communication ports COM1 Built-in Infra Red communication port DISPLAY unit RS232 communication, TTL level,

Appendix: Technical Specifications 28 Protocols MODBUS RTU/ASCII and DNP3.0 USB connector Cable terminated with USB type A Input Isolation 2500

Appendix: Technical Specifications 29 Standards Compliance EMC ANSI C12.1 Reference: IEC 61000 Surge – IEEE C62.41.2-2002  100kHz ring wave 

Appendix: Technical Specifications 30 Measurement Specifications Accuracy Parameter Full Scale @ Input Range % Reading % FS Conditions Range Voltag

Appendix: Technical Specifications 31 CT - primary current rating of external current transformer FSV - voltage full scale FSI - current full scale

iv Table of Contents Chapter 1 Introduction... 1 About This Manual...

v FIGURES Figure 1: Front view - Nameplate description... 3 Figure 2: EM920 - FORM 9S Dimensions...

vi TABLES Table 1: Wiring Configuration... 8 Table 2: 4AO – Output Curent s

Chapter 1 Introduction 1 Chapter 1 Introduction About This Manual This manual is intended to assist the user in the installation of the eXpertmeter™

2 Chapter 1 Introduction • Auxiliary power supply option – AC/DC and Low DC options are available • High resolution 4’ Graphic LCD display • Four

Chapter 1 Introduction 3 Socket Meter Overview Figure 1: Front view - Nameplate description