QUICK START MANUAL
STER PMU Quick Start Manual rev. 1.0.982 Studio Elektronike Rijeka d.o.o. Janka Polid Kamova 19 HR-51000 Rijeka, Croatia Tel: +385 (0) 51 218-430 Fax: +385 (0) 51 218-270 Web: www.ster.hr www.wamster.net E-mail: ster@ster.hr info@wamster.
Document Revisions Record Revision DESCRIPTION OF CHANGE APPROVED BY DATE APPROVED 1.0.885 Initial publication DB 2011-10-31 1.0.
STER PMU Quick Start Manual Table of Contents 1 Introduction ..................................................................................................................................................... 5 1.1 Main Features .............................................................................................................................................. 5 1.2 Safety considerations .........................................................................................................
STER PMU Quick Start Manual Table of Contents 5 Instrument maintenance ................................................................................................................................ 29 5.1 Changing batteries ..................................................................................................................................... 29 5.2 Safety considerations ......................................................................................................................
STER PMU Quick Start Manual Introduction 1 Introduction STER PMU is a handheld synchrophasor measurement unit, equipped with a rechargeable battery pack, GPS for time source, GPRS modem or Serial to Ethernet converter for remote data reporting, and SD card slot for local storage of 5 months of synchrophasor measurements. It is designed to provide an easy to setup solution for remote measurement and data acquisition.
STER PMU Quick Start Manual 1.2 Introduction SAFETY CONSIDERATIONS To ensure operator safety while using the STER PMU instruments and to minimize the risk of damage to the instrument, please note the following general warnings: The instrument is designed to ensure maximum operator safety.
STER PMU Quick Start Manual Description 2 Description 2.1 FRONT PANEL 1 2 3 4 7 5 6 Figure 2.1: Front panel Front panel layout: 1 LCD Graphic display with LED backlight, 320 x 200 pixels. 2 F1 – F4 Soft function keys. Their function is indicated for each screen separately, at the bottom of the LCD display. 3 ARROW keys Move cursor and select parameters. 4 ENTER key Confirms new settings, step into submenu. 5 ESC key Exits any procedure, exit from submenu.
STER PMU Quick Start Manual 2.2 Description CONNECTOR PANEL 1 IN Warning! I3 C I2 B I1 A 2 N Use safety test leads only! L1 A L3C B Max. permissible voltage between voltage input terminals and ground is 1000 VRMS. L2 Max. permissible voltage between voltage input terminals is 1730 VRMS Figure 2.2: Top connector panel Top connector panel layout: 1 CURRENT TERMINALS Clamp-on current transformers (I1, I2, I3, IN ) input terminals.
STER PMU Quick Start Manual 2.3 Description BOTTOM VIEW 2 MI 2792 CAT III 1000V IP40 1 Figure 2.4: Bottom view Bottom view layout: 1 Battery compartment To replace the batteries, unscrew the lid screw using a large screwdriver or a coin. Refer to the Instrument maintenance chapter for details. 2 Serial number label Device serial number. Warning! Refer to the Instrument maintenance chapter for details about replacing the batteries.
STER PMU Quick Start Manual Description Voltage measurement cable, black 1 Voltage measurement cable, green 1 USB to female DB9 cable 1 Male DB9 to male DB9 cable 1 12 V / 1.
STER PMU Quick Start Manual Getting started 3 Getting started 3.1 CONFIGURING THE SERIAL TO ETHERNET CONVERTER If GPRS modem is used for remote communication, STER PMU device automatically configures all necessary parameters. In that case, you can skip this chapter and continue powering on the device. For the SENA PS110 Serial to Ethernet converter, it is important to manually configure its IP address to match the appropriate LAN subnet before connecting it.
STER PMU Quick Start Manual Getting started SENA PS110 AC/DC adaptor Figure 3.1: Powering on the PS110 modem To reset all settings to their defaults, press the factory reset switch located on the bottom side of the device and hold it for at least 5 seconds. 3.1.2 CONFIGURING THE SENA PS110 USING A SERIAL CABLE To configure the SENA PS110 through a serial port, a PC with a serial RS232 COM port and a terminal application must be available.
STER PMU Quick Start Manual Getting started Figure 3.4: HyperTerminal serial connection settings dialog 6. 7. 8. Open the connection. Direct the input to the console, and press the ENTER key to check if the device is communicating. Device should respond with a ProSeries login prompt. Enter username and password to log into the device. The factory default user settings are as follows: Login Password root root Figure 3.5: HyperTerminal serial connection settings dialog 9.
STER PMU Quick Start Manual Getting started Enter Network configuration menu from the main menu by typing 1 and pressing Enter. Then, enter the IP configuration submenu. The following menu items should appear: Figure 3.
STER PMU Quick Start Manual Getting started Figure 3.10: Serial port configuration overview In the serial port configuration overview select the ordinal number of the serial port to configure. On a PS110, there will only be a single port shown. Press 1 and Enter to configure the port, then enter the Host mode configuration menu. 11.1.
STER PMU Quick Start Manual Getting started Figure 3.12: Serial port parameters 12. Save and apply changes by entering the save command, followed by the apply command. The device will save new configuration settings in the non-volatile memory and apply them. 13. Finally, exit from the text-driven configuration menu interface by entering the exit command. Figure 3.13: Save, apply and exit to finish configuration 14.
STER PMU Quick Start Manual 3.2 Getting started CABLING AND CONNECTING THE DEVICE 3.2.1 CONNECTING THE POWER SUPPLY AND POWERING ON STER PMU devices are shipped with batteries partially charged and ready for use. Batteries must be inserted according to procedure described in chapter 5.1 Changing batteries. Device can operate on fully charged batteries for up to 4 hours before shutting down. If the device does not power on after pressing the ON-OFF key, batteries may need recharging.
STER PMU Quick Start Manual Getting started It is presumed that configuration of the modem has been completed before continuing with this chapter. If not, please refer to chapter 3.1 Configuring the Serial to Ethernet converter. Check that the Data/Console switch at the PS110 device is switched to Data mode before continuing. First, connect the GPS receiver by plugging the PS2 connector into the middle PS2 socket at the side panel of the STER PMU device.
STER PMU Quick Start Manual 3.3 Getting started CONFIGURING THE DEVICE FOR FIRST USE 3.3.1 MAIN SCREEN After powering on, main device screen is shown: 1 2 3 4 6 5 Figure 3.
STER PMU Quick Start Manual Getting started Figure 3.18: Accessing the SETUP menu There are 3 setup menu items in the SETUP menu: MEASUREMENT SETUP: used for configuring voltage and current measurement ratios, COMMUNICATION SETUP: used for configuring the modem, SYSTEM SETUP: advanced system settings. To configure the modem: Press the Down key ( Then press Enter ( ) to select the COMMUNICATION SETUP menu item, ) to enter this screen. 3.3.3 COMMUNICATION SETUP MENU Figure 3.
STER PMU Quick Start Manual Getting started For detailed help on using the online web interface, please consult Chapter 6: Using the Wamster web interface. 3.3.5 POWERING OFF In order to power off the STER PMU device, serial communication needs to be disabled first. Communication can be disabled by pressing in COMMUNICATION SETUP menu, while the communication is active. After the communication is stopped, instrument can be turned off by pressing (I/O) key.
STER PMU Quick Start Manual Working with the instrument 4 Working with the instrument 4.1 CHANGING MEASUREMENT SETTINGS In most cases, it is recommended to configure connection settings in the instrument before actually connecting the cables to the grid, to minimize the amount of inconsistent synchrophasor measurements in your database. Also, it is recommended to manually stop the remote data connection while doing such changes. 4.1.
STER PMU Quick Start Manual Working with the instrument Table 4.3: 4W measurement ranges Range name Peak (V) Meas. type VT connection Power system 150 V 235 direct / indirect YES LV / MV / HV 300 V 500 direct NO LV 1000 V 2205 direct NO LV Table 4.4: 3W measurement ranges Range name Peak (V) Meas.
STER PMU Quick Start Manual Using the up ( ) and down ( Working with the instrument ) keys select the Current range menu item, and then use left ( ) and right ( ) keys to select one of the two ranges: 5 A (100% input range) or 0,5 A (10 % input range) Installed current transformers on the field are usually over-dimensioned for a possibility to add new loads in future. In that case current in primary transformer can be less than 10% of rated transformer current.
STER PMU Quick Start Manual Working with the instrument 4.4.2 CONNECTING CURRENT TERMINALS IN,I3,I2,I1 Connect the four current clamp connectors to the top 4 current terminals. IN I3 C I2 B I1 A Always connect the cables to the device before mounting the clamps. In case of usage of non-clamp-on sensors like A1037, connection to secondary CT circuits must be performed with extreme care. N L1 A L3C B L2 Figure 4.9: Current terminals 4.5 WIRING CONFIGURATIONS 4.5.
STER PMU Quick Start Manual Working with the instrument IN I3 C I2 B I1 A N L1 A L3C B L2 Figure 4.11: Wiring configuration for a 3-phase 4-wire system Note that for direct measurement of currents at LV systems, xxxA/1V clamp-on current sensors have to be used. 3-WIRE (3W) 3-PHASE SYSTEM To configure the instrument for 3-wire (3W) measurements, start by entering the MEASUREMENT SETUP menu as described before (see Fig. 4.1).
STER PMU Quick Start Manual Working with the instrument IN I3 C I2 B I1 A N L1 A L3C B L2 Figure 4.13: Wiring configuration for a 3-phase 3-wire system 4.5.2 CONNECTING TO MID- AND HIGH-VOLTAGE POWER SYSTEMS In systems where voltage is measured at the secondary side of a MV/HV voltage transformer, the instrument voltage range should be set to 150 V and scaling factor of that voltage transformer ratio has to be entered in order to ensure correct measurement.
STER PMU Quick Start Manual 4.6 Working with the instrument SYNCHRONIZATION Synchronization input channel is used as a frequency measurement reference. Depending on the wiring configuration, it can be either U1 or U12. This parameter can also be modified in the MEASUREMENT SETUP screen. 4.7 FREQUENCY Depending on the grid frequency, it is possible to select 50Hz or 60Hz as the frequency for measurements. Different reporting speed will also depend on this setting.
STER PMU Quick Start Manual Instrument maintenance 5 Instrument maintenance 5.1 CHANGING BATTERIES STER PMU uses six rechargeable NiMh batteries, type HR 6 (size AA) for battery backup. Make sure that the power supply adapter/charger and measurement leads are disconnected and the instrument is switched off before opening the device. Turn the device upside down as shown on the picture below to keep the batteries from falling out after the lid is opened.
STER PMU Quick Start Manual 5.3 Instrument maintenance BATTERIES Instrument contains rechargeable NiMh batteries. These batteries should only be replaced with the same type as defined on the battery placement label or in this manual. If it is necessary to replace batteries, all six have to be replaced. Ensure that the batteries are inserted with the correct polarity; incorrect polarity can damage the batteries and/or the instrument.
STER PMU Quick Start Manual 5.6 Instrument maintenance PERIODIC CALIBRATION To ensure correct measurement, it is essential that the instrument is regularly calibrated. If used continuously on a daily basis, a six-month calibration period is recommended, otherwise annual calibration is sufficient. Contact your distributor for calibration details. 5.7 SERVICE For other repairs, either under or outside of warranty, please contact your distributor for further information. 5.
STER PMU Quick Start Manual Using the Wamster web interface 6 Using the Wamster web interface After the device has connected to the server, it can be monitored and managed through the Wamster web interface. Wamster web interface provides a simple way to monitor and configure your device, as well as download (export) measured data from the cloud storage. 6.
STER PMU Quick Start Manual Using the Wamster web interface 2 1 Figure 6.2: User area: 1. navigation menu, 2. login status with a Logout link To log out, click the Logout link button in the upper right corner of the web page. 6.3 OVERVIEW First navigation item and the default page after logging in is the Overview page, which shows a general overview of your devices. Statuses and management options for individual devices registered under your username can be seen, as shown on the figure: Figure 6.
STER PMU Quick Start Manual Using the Wamster web interface 1 2 3 Figure 6.
STER PMU Quick Start Manual 6.4 Using the Wamster web interface DEVICE COMPARATION To compare measurements of your devices, use the Compare page, accessible from the navigation menu: Figure 6.6: Measurement comparison page allows real-time and historical comparison Left part of the page shows a map with geographical locations of your instruments (as reported by their GPS devices).
STER PMU Quick Start Manual Using the Wamster web interface 6.4.2 SWITCHING BETWEEN REAL-TIME AND HISTORICAL VIEWS By default, Compare page shows real-time relative measurements for currently connected devices. In order to freeze the comparison at a specific moment in time, it is necessary to switch from Real-time to Historical view using the right panel on the Compare page: Figure 6.
STER PMU Quick Start Manual Using the Wamster web interface On the left side of the page, there is panel for creating new export requests, which allows you to specify the time range for export, export resolution in frames per seconds, and individual devices for which the measurements should be exported. If the export resolution is higher than the default reporting resolution for a given device, you can also specify whether the server should request these "missing" frames from each device, or not.
STER PMU Quick Start Manual Using the Wamster web interface Figure 6.11: If the remote instrument is in a different menu than the one shown on the web page, remote status will change to "NOT SYNCHRONIZED" Note that "SYNCHRONIZED" status does not necessarily mean that remote instrument screen is showing exactly the same contents as the web page, it only indicates that the same submenu is selected as currently shown.
