The current terminals are made in two sizes: The data transmission rate is fixed and default set to 9. The meaning of signal flags see item 2. Its primary function is to perform manual billing reset of the meter. Besides, a corresponding indicator L1, L2 or L3 is blinking indicating through which of the metering elements energy flows in reversed direction. 
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If there is no Reset pushbutton, meter functions that requests pressing it are disabled e. A customer can specify at which voltage combination applied at the tariff inputs a certain tariff is valid. Connect the meter in compliance with the metefview diagram which is stuck in the inner side of the terminal cover or printed on the meter name plate. Phase voltage test contacts 3.
In such a case the Reset pushbutton seal should be broken and the Reset pushbutton should be pressed before the meter parameters can be changed. Installation and Operating Instructions.
Data downloaded via optical port In this case pulse transmission at a distance of 1 km is made possible. Four decimals are displayed in the meter test mode if not requested less decimals to be displayed.
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Perform a meter billing reset press the orange pushbutton The class A pulses can be transferred to 0. MT - Electronic three-phase time-of-use electricity meters Due to indirect pressure to the conductors the terminal screws do not damage it.
No-power reading option Optionally, data can be displayed on the LCD in a no-power meter state by pressing the Scroll pushbutton. Display testing In case of the meter billing reset, the billing data are transferred from the registers for a current month to the registers for a previous month, the registers for demand in a current month are deleted, and the counter of performed billing resets is incremented by one.
Pulse emitting LED s 7. The size of data characters is 8 mm high and 4 mm width. On request, historical data for previous billing periods, besides data for a current billing period, can be also downloaded via the optical port and an interface if it is built-in.
Phase voltage test contacts 1. Then the meter waits for 2 sec.
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Deleting alarm flags by pushbuttons When a title Ad rESEt is displayed on the LCD, the orange pushbutton should be pressed in order to delete the displayed alarm flags e. This way it can measure the consumed electric energy and the energy delivered to the grid note: Energy data and demand can be displayed in data formats given in the table below.
However, the default data transmission rate is 9. The pushbutton functions and the meter modes are shown in the following flow-chart.
On request an extended plastic or metal top fixing element can be attached to the back side of the meter base. On request, the function of manual meter billing reset can be metetview.
When the indicators L1L2L3 blink, this indicates wrong phase sequence. Long - pressing longer than 2 sec.
Real-time clock A real-time clock is controlled with a They are organized as ring buffers so that after the th event the new event is registered as Detector of terminal cover opening 2. The Iskraemeoc s are used for testing the meter accuracy and indicating meter operation.
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Negligible effect of influence quantities and metervieq disturbances 2. Meter installation Registers of fraud energy The MT meters have four registers in which energy is separately registered during the meter tampering besides energy registered in the corresponding registers.
In this way registered energy is equal to the one actually consumed regardless of the meter connection. The MT electronic three-phase meters are designed for measurement and registration of active, reactive and apparent energy and demand in three-phase four-wire networks.
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