Elektra Elektronik GmbH & Co. Störcontroller KG


EES is a German family owned company, combining technological expertise and innovation for over 40 years, providing high-value solutions for HV and MV substation applications.

About us

EES is a family owned mid-sized company, combining technological expertise and innovation for more than 40 years. We are providing high-value solutions in the range of fault annunciating and telecontrol systems. Today we are contributing with a comprehensive lineup to increase availability and operation reliability of countless energy generation and distribution plants all over the world. The latest product generation covers today's and future requirements in the field of substation automation with IEC 61850 and also offers links to superior SCADA systems over IEC 60870-5-104 or Modbus. Our products are based on recognized market standards. Adaption to process parameters onsite can be easily done e.g. by integrated web server. Reliable signal transmission on various media is also a core competence of EES. Furthermore, we secure the long-term availability of spare parts for our products.

Elektra Elektronik GmbH & Co. Störcontroller KG
Hummelbuehl 7 – 7/1
71522 Backnang

Phone: +49 7191 182-0
Fax: +49 7191 182-200
Internet: www.ees-annunciator.com

Contact person

Sascha Hahn
Product Manager
Phone: +49 7191 182-245

Products and services

EES offers products in the field of switchgear monitoring and fault annunciating ranging from simple devices with predefined settings up to a networkable systems with IEC 61850 and IEC 60870-5-104 multilink structures. Setting into operation and adjusting to parameters on site, DIP switches and easy of use browser based software are provided. Hereby standardized reporting procedures acc. to DIN 19235 or ISA, as well as individual sequences can be realized. Drop flap functionality suits the demand for displaying last states of a facility. Supervision relays monitor voltagelevels, as well as phase failures in networks. Moreover EES multiplexer systems convince by universal applicability, simple handling and low installation costs. The systems are compact and have high interference resistance for transmission of digital and analog I/O’s up to 20 Kilometers over arbitrary control lines or wireless. For reliable transmission and evaluation of the data telegrams secured protocols are used.

USM is top of the line series, with RGB Leds for 6 colours to represent the status of an input. Moreover analog cards are available providing the actual value on all protocol type e.g. IEC 61850, else signaling the under or overrun, in between or out of range of a threshold via the digital inputs. Voltage between 0 and +/- 10V or currents between 4…20mA can be applied. Additionally the USM can act as a watchdog for 3rd party devices via 61850.

Further reading

Window Annunciator Panel WAP

The WAP is the most advanced windows annunciator panel ever designed. In contrast to the mechanical adaption of windows sizes, this device delivers the easy setting up of windows by drag and drop via browser. Each window can be fully adapted in terms of width and height and colour. Repeat relays for each input, 3 common alarms and redundant power supply are available. For connection to IEC 61850, Ethernet or optical fibre sockets are provided and several devices can be connected via CAN-Bus.

Further reading

News & Innovations

Redundant monitoring system
Large distribution network operators or transport network operators often have the requirement to set up a 2nd reporting path in order to receive essential or important individual messages in a failure situation of the 1st reporting path via an independent communication channel. The terms often vary, but basically, it is a redundant, independent reporting system that can reliably transmit parallel messages to the control system using standardized protocols.

Based on the history, fault annunciating systems are suitable for this purpose, which with their robust technology can reliably indicate states and issue alarms. EES has been producing and selling annunciator systems with communication interfaces according to IEC 60870-5-101 and -104 for more than 10 years, and they are already available in the 3rd generation. In spring, the software generation 4.0 will be introduced, which has an even wider range of functions.

With the redundant alarm system, up to 100 USM alarm boxes of different sizes with 8 to 48 inputs can be networked, which in turn can be cascaded with up to 4 devices. Thus, thousands of messages can be mapped in the system, which are sent to a central EES frontend and are processed here, e.g. to form a targeted collective message logic and to forward parameterizable important individual and collective messages to the control system. All communication between the message boxes is based on the standardized IEC 60870-5-104 protocol and the transmission to the control level is also based on this protocol. Alternatively, a serial IEC-60870-5-101 interface is also available. At station level, communication can also take place via IEC 61850. All protocols can also be operated in parallel.

The alarm boxes meet the latest, stricter requirements for IT security according to the BDEW white paper, including certificate-secured encrypted parameterization files. An integrated firewall only allows the necessary data traffic via open ports, access to the settings, as well as to the available online monitor and the reporting book, takes place via a secure HTTPS encryption. In the future, encryption of the data traffic and the communication protocol will also be optionally possible in accordance with IEC 62351-5.

In order to keep the configuration of the large number of alarm boxes as low as possible, it is possible to do this centrally via the USS Frontend. This automatically distributes the relevant information and parameter sets to the connected alarm boxes. For this purpose, data point lists can be loaded via generated Excel files or individually adapted import tools and thus parameter sets can be generated.

The alarm boxes can be equipped with up to 2 Ethernet interfaces in order to physically separate the communication level from the parameterization/diagnosis level or to serve hosts in different networks.

Many years of successful use by numerous customers show that networkable annunciator systems can successfully fulfill the task and that development is far from being at an end. The clear and unambiguous display of fault conditions is nevertheless deliberately retained and serves to facilitate rapid troubleshooting in an increasingly complex network structure. Further reading
New addition to the WAP family!
The window fault annunciator WAP now offers up to 4,6, 8 or 24 alarms in an ultra-compact design that can clearly display the respective status through large backlit windows. To handle more messages, the WAPs are expandable. The window colors are freely configurable and different variants with supply and signal voltages of 24 - 220 V AC/DC are available. In addition to the proven fault indication functionality, numerous options such as redundant power supply, integrated 1:1 relays or various communication interfaces such as Modbus or IEC protocols, also with IEC61850 for connection to higher or lower-level systems, are available. Other options such as analog inputs, redundant power supply, etc. can be easily configured via a matrix.

New sizes. The fault annunciator is manufactured in two principal performance classes WAP-P and WAP-K, as well as in various sizes. These are the WAP 4 with four signal inputs, the WAP 6 with six signal inputs and the WAP 8 with eight signal inputs, as well as the standard model WAP 24 with 24 inputs.

IEC 61850. Communication via IEC 61850 can be activated for each USM by means of a software license key. Thus, using the USM as a "rag picker", single and double messages can be easily integrated into existing IEC 61850 structures in the switchgear.

Multilink. Each USM series annunciator can maintain up to four links simultaneously via the IEC 60870-5-101 or -104 protocols. Communication can take place both in parallel operation and in a redundancy group.

Analog cards with limit value monitoring. With the new analog cards, a maximum of 20 analog values can be processed in one device.
Voltage ranges between 0 V and +/- 10 V or currents between 0 (4)... 20 mA can be applied individually to each input. The highlight is that the values are available on all protocol types such as IEC 61850, 60870-5-104 or Modbus and, in addition, undercutting or exceeding of threshold values can be signaled via the digital inputs. In addition, monitoring between or out of range is possible. Further reading

Click here if you notice an image that violates copyright or privacy rights.

Get in contact

We only use functionally necessary cookies and the web analysis tool Matomo in order to optimally design and continuously improve our website for you. By continuing to use our website, you agree to this. Further information and an objection possibility can be found here: Data protection