DE2622577A1 - Maximum indication electricity meter - has kilowatt-hour meter, maximum indicator, current supply, controlled display elements and data output - Google Patents

Abstract

The maximum indication electricity meter described comprises a kilowatt-hour meter (KW), a maximum indicator (MW), an electrical supply (SV), control devices for the display elements (AZ) and for a data output (DA), and a receiver of circulating commands (RE). These are integrated with a common housing. A time-base device is associated with the max indicator (MW) and is used to establish temporal interruption points. A battery constantly charged by the automatic line to an approx. max. capacity, is associated with the electrical current supply (SV). Alternatively, a memory, independent of the supply voltage, is used to memorise the measurement state at the time of a voltage drop. Cumulative counters fitted with stepping motors, or similar devices, act as display devices (AZ) to memorise the maxima.

Description

Electronic multiple counter

The invention relates to an electronic multiple counter for detection the energy consumption of a large number of consumers.

In places where energy consumers are locally close together, such as B. in multi-storey residential buildings, each consumer is a separate one Energy consumption meter assigned. When doing this besides the normal household electricity meters more complex meters for individual customers, e.g. B. Maximum counter, are required, or Darife are to be switched over by clock control, this is the case for everyone to provide such a device for individual such customers.

This allocation process for energy consumption meters is complex and uneconomical.

The invention is based on the object of a more economical solution to accomplish.

This object is achieved by the invention set out in the claims solved, which is shown for example with reference to the drawing.

A central electronic kilowatt hour meter EZ is both input and as well as on the output side by electronic switches with any number connected by current transformers and display devices KA1 ... KAn, MA1 ... MAn. As a current transformer Ferrite shell-core current transformers with or without electronic error compensation are preferred used. For each energy consumer per connected network phase R, S, T is a Provide current transformers. The electronic switch, a multiplex switch, gropes the current transformers and display devices assigned to each energy consumer in a cyclical sequence Kr ..., MA ... from.

A multiplex channel is used to continuously check that it is working properly provided as a calibration channel through which an alarm signal is triggered in the event of a fault will. This alarm signal can be sent internally to an administrative body or via a Pipeline F are transmitted to the energy producer.

Counters Kr ... and / or maximum counters are used as display devices MA ... intended for roller counters with stepper motors, stepping mechanisms (e.g. telephone charge meter) and / or electronic memories with numeric display are usable. These display devices are preferably arranged centrally, so that a quick and easy reading is possible.

One not shown, in addition to the central electronic kilowatt hour meter EZ controlled data recording device with integrated microcomputer permitted the recording of maxima, overconsumption and exceeding of specified power limit values in multiplex operation. You can set up a shutdown device for loads when exceeded be assigned to benefit limits.

In addition, the data recording device can be connected via the trunk line F are queried and over the same trunk line F are by means of only one ripple control receiver or all tariff changes can be controlled with just one time switch.

Another advantage of the invention is that it can be easily expanded of the system for new customers. There is only relief the programming of the central electronic kilowatt hour meter EZ and the The addition of current transformers and the corresponding display devices is required.

With long supply lines between the central kilowatt-hour meter EZ and energy consumers are expediently small cross-section sensing lines from the place of power consumption to the kilowatt hour meter EZ. L. e e r e i t e

Claims (4)

Claims: 1) Electronic multiple counter for recording the Energy consumption of a large number of customers, characterized in that a central electronic kilowatt hour meter (EZ) by means of a multiplex switch and any number of display devices (kr ..., MA ...) with them assigned current transformers cyclically for the calculation, storage and display of the respective energy consumption scans, for constant monitoring of the proper Multiplex operation a nultiplex channel is used as a calibration channel, via a long-distance line (F) Tariff switchover by only one ripple control receiver or only one time switch and that by means of an additional data recording device integrated microcomputer consumption maxima, excess consumption and excesses calculated and stored for each energy consumer will. 2) Electronic multiple counter according to claim 1, characterized in that that the central electronic kilowatt hour meter (EZ) and, if applicable assigned data recording device via the Pern line (F) from the electricity supply company can be read and controlled remotely. 3) Electronic multiple counter according to claim 1, characterized in that that there is a current transformer for the energy consumers per connected phase (R, S, D) Ferrite shell core current transformers with or without electronic error compensation are provided. 4) Electronic multiple counter according to claim 1, characterized in that that as display devices (es ..., MA ...) roller counters with stepper motors, Stepper mechanisms and electronic memory with numeric display can be used.