Horstmann Fault Indicator

[Astrea Busbin]

Keywordfault: Directional short-circuit and earth fault indicators ensure that the fault area is safely and instantly identified. Another strong argument for using our products is that on-site indication and the remote signal to the control room work in parallel; if required, you can also switch remotely. We know that target-oriented activation and switching is the only guarantee for getting consumers their power back quickly.

The reliability of our directional short-circuit and earth fault indicators in continuous monitoring and thus in normal operation also speaks for our high level of technical expertise. Few products feature such high quality as ours. In addition to the provision of current and highly accurate measurements of the power and voltage, as a customer you also benefit from a wealth of other information from the distribution network. From the reliable transmission of simple station reports, such as door contacts or temperature alarms, to the submission of status information from the digital substations, we ensure transparency in the distribution network.

Our range of new concepts, including Predictive Maintenance, does more than just ensure that the existing medium voltage switchgear can be easily retrofitted and brought up to the latest technical standard using retrofit solutions. It is also representative of the added benefit you get from the technical skill and expertise in short-circuit and earth fault indicators that we can guarantee you here at Horstmann.

The indicator is provided with a self-adjusting load-dependent control of the trip current level. This function allows the indicator to continuously sample the load current on overhead lines and automatically set a corresponding trip value for fault detection as a function of the load current. The maximum load current sampled by the indicator, is kept in a memory for a period of at least 72 hours. Thus, the indicator is most favourably adapted to the network to be monitored, even if low load is currently present.

The indicator is provided with a built-in battery control. When the battery capacity decreases from a total indicating time of 500 hours to a residual time of 50 hours, the yellow LED of the display starts flashing for a period of 6 months.

The Navigator LM can differentiate between two subsequent short-circuit detections. Upon the detection of a first short-circuit, the LED indicator light starts flashing at equal rates. The detection of a second short-circuit (e. g. after an automatic re-closing) switches the LED to double flashing mode.

The Earth 4.0 is an earth fault indicator. It is designed to detect, locally indicate and remotely report earth fault currents in medium voltage distribution networks. A wired earth fault current transformer monitors the summation current of all three conductors.

The electronics of the display unit evaluates the measurements. When the fault sensitivity threshold is exceeded, a red LED will start flashing and a mechanical flag becomes visible. In addition to that, the remote indication contacts are energised.

ComPass A is a short circuit and earth fault alarm for medium voltage distribution grids with a direct earthed neutral system. Through the Modbus protocol, the device can be parameterized, reporting error events and sent measured data to the SCADA system. The product is compatible with RMU cabinets of brands such as: SafeRing of ABB; RM6 of Schneider; 8DJH, NXPLUS C of Siemens; XIRIA of EATON

ComPass Bs 2.0 is fault indicator for short-circuit and earth fault with directional current used in the medium voltage grid, the volte signal get by Wega1.2C, Wega2.2C. Through the Modbus protocol, the device can be parameterized, reporting error events and sent measured data to the SCADA system. The product is compatible with RMU cabinets of brands such as: SafeRing of ABB; RM6 of Schneider; 8DJH, NXPLUS C of Siemens; XIRIA of EATON

ComPass B is fault indicator for short-circuit and earth fault with directional current used in the medium voltage grid, the volte signal get by Wega1.2C, Wega2.2C Through the Modbus protocol, the device can be parameterized, reporting error events and sent measured data to the SCADA system. The product is compatible with RMU cabinets of brands such as: SafeRing of ABB; RM6 of Schneider; 8DJH, NXPLUS C of Siemens; XIRIA of EATON

ComPass B 2.0 is fault indicator for short-circuit and earth fault with directional current used in the medium voltage grid, the volte signal get by Wega1.2C, Wega2.2C. Through the Modbus protocol, the device can be parameterized, reporting error events and sent measured data to the SCADA system. The product is compatible with RMU cabinets of brands such as: SafeRing of ABB; RM6 of Schneider; 8DJH, NXPLUS C of Siemens; XIRIA of EATON

Westnetz was looking for a simple, safe and efficient solution to be able to locate faults and disconnect overhead lines much faster in the future. The network operator came across the digital overhead line short-circuit indicator Smart Navigator 2.0 from Horstmann. The robust and compact measuring device is mounted at strategic locations in the overhead line network, and continuously and reliably monitors them. It measures the current, load flow direction and conductor temperature. Faults and other information are transmitted to the control centre and help to identify problems quickly and clearly. In addition, faults are displayed on-site via an ultra-bright LED on the Smart Navigator 2.0. To test the performance of the Smart Navigator in practice, Westnetz conducted a test phase lasting several months in three regional networks with increased local fault occurrence probability.

The installation and commissioning of Smart Navigator 2.0 is particularly straightforward. The devices are self-powered and can be hooked into the overhead line with the help of an insulating pole when live working so that the overhead line does not need to be disconnected. They are powered using energy harvesting from the overhead line load current. The dynamic adaptation to load conditions means that a conductor current of 5 A is sufficient for the supply. Software updates and configuration adjustments are possible through an LTE connection via remote maintenance from the control centre. The long service life further increases the cost-effectiveness of the monitoring systems, a service life of 20 years can be expected with one battery change.

A great willingness to innovate and invest helped Horstmann GmbH to evolve into a business now active worldwide. Its research and development department, with over 25 employees, works continuously to improve existing products and develop new ones to meet requirements in rapidly changing networks. New and refined products and system solutions are tested for durability under the most extreme climatic conditions on a multitude of state-of-the-art testing and measuring devices.

Alongside short-circuit and earth fault indicators and voltage detecting systems, also the earthing devices for medium voltage are part of the portfolio. The product range is rounded off by remote monitoring solutions. As a result, Horstmann GmbH offers its clients, not just products, but system solutions too.

Overhead line fault indicator NAVIGATOR-LM Version C Designed to detect short circuits for overhead lines up to 160kV, indicate fault with high intensity LEDs and send signals to RTU cabinets on nearby power poles for transmission to Scada.

The underground cable indicator Alpha E is designed to detect and display local and remote short-circuit in the medium voltage grid The product is compatible with RMU cabinets of brands such as: SafeRing of ABB; RM6 of Schneider; 8DJ, 8DH, SIMOSEC of Siemens; SVS, XIRIA of EATON

CComPass B is a Directional short-circuit and earth fault indicator for medium voltage distribution with a earthed & Isolated earthed neutral system Through the Modbus protocol, the device can be send reporting error events and measured data to the SCADA system. The product is compatible with RMU cabinets of brands such as: SafeRing of ABB; RM6 of Schneider; 8DJH, NXPLUS C of Siemens; XIRIA of EATON

The underground cable indicator Sigma F+E 2.0 is designed to detect and display local and remote short-circuit and earth fault in the medium voltage grid The product is compatible with RMU cabinets of brands such as: SafeRing of ABB; RM6 of Schneider; 8DJH, NXPLUS C of Siemens; XIRIA of EATON

The underground cable indicator Sigma F+E 3 20.0 is designed to detect and display local and remote short-circuit and earth fault in the medium voltage grid The product is compatible with RMU cabinets of brands such as: SafeRing of ABB; RM6 of Schneider; 8DJH, NXPLUS C of Siemens; XIRIA of EATON

The WEGA 1.2C voltage indicator is based on the principle of cascading capacitors from high voltage to 110Vac for the purpose of display phase status, testing for ComPass B. The display on the front panel of the WEGA 1.2C allows all parameter settings compliance with standards.

The WEGA 2.2C voltage indicator is based on the principle of cascading capacitors from high voltage to 110Vac for the purpose of display phase status, testing ComPass B. The display on the front panel of WEGA 2.2C allows all parameter settings check for compliance with standards.

A fault indicator is a mechanism that conveys an indication of a fault, or absence of it, in a system. For example, the purpose of the engine-check light commonly found on the dashboard of motor vehicles is to indicate whether or not there is a fault with the engine.

In electric power distribution networks, a fault indicator is a device which provides visual or remote indication of a fault on the electric power system. Also called a faulted circuit indicator (FCI),[1] the device is used in electric power distribution networks as a means of automatically detecting and identifying faults to reduce outage time.

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