Fitur dan Keunggulan Produk Megger Sverker 780 Relay Test Sets
Jual Megger Sverker 780 Relay Test Sets
Artikel ini akan mengulas tentang fitur dan keunggulan produk Megger Sverker 780
Fitur dan Keunggulan Megger Sverker 780 Relay Test Sets:
1. Set of resistorsFine regulation of current andvoltage thanks to the built-inset of resistors.
2.Start and stop conditionsThe timer’s start and stopinputs respond to changes,voltage or contact closing/openings. The timer’s startinput is also used whentesting auto-reclosing relays,to synchronize two or moreSVERKER units and to startgeneration with an externalsignal.
3.DisplayPresents time, current, voltageand other entities. Also usedto make settings, after youenter the setting mode bypressing button markedMODE.
4.Freeze function (HOLD)This makes it possible tomeasure voltages andcurrent as short as a quarterof a mains-voltage periodby immobilizing the readingon the display. Voltage andcurrent readings are frozenwhen the timer stops. If thetimer does not stop, thereading present when thecurrent was interrupted isfrozen on the display.
5. Make/break contactChanges state automatically when a test is started. Can be used (for example) to synchronize two or more SVERKER units, other external equipment or to switch the voltage applied to the protective relay equipment back and forth between non-faulty and faulty.
6. Ammeter and voltmeter Current and voltage are measured by the built-in ammeter and voltmeter. Resistance, impedance, phase angle, power and power factor can also be measured. Readings appear on the display. These instruments can also be used to take measurements in external circuits. The voltmeter can also be used as a 2nd ammeter (when testing differential relays for example, using CSU20A). Current and voltage can be displayed either as amperes and volts or as percentages of a given current or voltage (the present settings of the protective relay equipment for example).
7. Current source Provides 0-250 A AC, 0-250 V AC or 0-300 V DC, depending on the output hat is being used. Settings are made using the main knob. The readings of current, voltage and other entities appear on the display. The start switch is used to turn the current source on and off. When time is being measured, this is done in synchronization with the timer.
8. Auxiliary voltage sourceProvides 20-220 V DC in two ranges. Equipped with overload protection and separated from the other outputs. Used frequently to supply the object being tested.
9. Status indicatorThe timer’s start and stop inputs are each equipped with indicator lamps which, when lighted, indicate a closed circuit (useful for detecting contact closings/openings) or the presence of voltage. These indicator lamps make it possible (for example) to check circuits before starting a measurement cycle.
10. Timer inputsThe timer has separate start and stop inputs, and it can be used to measure both external cycles and sequences initiated by SVERKER. The measured time appears on the display. Each input can be set to respond to the presence or absence of voltage (AC or DC) at a contact.
11. Start switchControls the turning on and off of the current source and timer. Can be set to one of four states. ON+TIME. Starts generation and timing simultaneously. Used to test over… relays (…means current, voltage or some other entity). Generation continues a) until the protective relay equipment operates and stops the timer or b) until the maximum time expires or the start switch is released if time-limited generation has been selected. OFF. Turns off the current source, whereupon generation is interrupted. ON. Turns on the current source in the generating state. OFF+TIME. Interrupts generation and starts the timer simultaneously. Used when testing under …relays (…means current, voltage or some other entity). The timer is stopped when the protective relay equipment operates. When automatic reclosing is to be tested, SVERKER can be set so that new generation will start when the timer’s start input is activated by the closing command.
12. Computer communication interface USBSVERKER is equipped with a serial port for communication with personal computers and the PC software SVERKER Win.
13. Tripping indicator Lights when a stop condition is fulfilled to indicate operation of the protective relay equipment. If the test being conducted incorporates timing, this indicator starts to blink when relay operation occurs.
14. Main knobUsed to set current output from the current source.
15. AC voltage sourceSince the AC voltage source is separated from other outputs, it is set independently of the current source. The AC voltage source is intended primarily for the relay protection equipment’s voltage input.
Jual Megger Sverker 780
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