Current sensor KSOH-S 1082
Current sensors
KSOH-S 1082 current sensors are inductive current transformers with an integrated load. The voltage signal at the output is proportional to the primary current. As with current transformers, sensors based on the principle mentioned above, can only measure alternating current. The integrated, low load of inductive current sensors enables reduced core dimensions and thus overall smaller sizes. As with current transformers, saturation effects can also occur with these current sensors. Current sensors require no auxiliary power and are maintenance-free.
Current sensor MKSOH-S 1384
MKSOH-S 1384 3-phase current sensors are inductive current transformers with an integrated load. The voltage signal at the output is proportional to the primary current. As with current transformers, sensors based on the principle mentioned above, can only measure alternating current. The integrated, low load of inductive current sensors enables reduced core dimensions and thus overall smaller sizes. As with current transformers, saturation effects can also occur with these current sensors. Current sensors require no auxiliary power and are maintenance-free.
Voltage sensors
Voltage sensor GBERA
GBERA 12 | 24 | 36 are voltage sensors for DC, AC and mixed voltages in medium-voltage applications up to 36 kV. The GBERA 12 | 24 | 36 voltage sensors consist of a resistive voltage divider (R1, R2) that divides the primary voltage Up into a proportional secondary voltage Us. An electromagnetic shield ensures that the voltage sensor can be used even in environments with strong interference. Since there is no electrical isolation between the primary and the secondary side, a surge arrester protects the downstream devices.
The wide frequency range of up to 150 kHz of these sensors, makes them ideal for power quality measurements. Thus, they are used in engine test benches in combination with power analyzers. Protection functions can also be implemented. No auxiliary power is required. The primary connection can be outer cone type A, B, CB, or C according to EN 50181. The secondary connection is made of up to 10 meters of RG 58 C/U coaxial cable with BNC connector. These voltage sensors comply with the standard IEC 61869-11.
Voltage sensor GSER 3
GSER 3 is a voltage sensor for DC, AC and mixed voltages in medium-voltage applications up to 6 kV. The GSER 3 voltage sensor is a resistive-capacitive voltage divider with surge arrester. The GSER 3 consists of a voltage divider (R1, R2, C1, C2) that divides the primary voltage Up into a proportional secondary voltage Us. An electromagnetic shield ensures that the voltage sensor can be used even in environments with strong interference.
Its wide frequency range up to 150 kHz makes it ideal for power quality measurements. Thus, it is used in combination with power analyzers in engine test benches. No auxiliary power is required. The primary connection is made with 3 meters long high-voltage cable, unshielded. For the secondary connection a BNC socket is available, for connecting up to 10 m of RG 58 C/U 50 Ω coaxial cable (the cable not included). This voltage sensor complies with the standard IEC 61869-11.
Voltage sensor MGTK
MGTK 12 and MGTK 24 are voltage sensors for medium-voltage applications up to 24 kV, having an extended frequency range for power quality measurement, with special versions for power quality harmonic measurement up to 3 kHz or up to 20 kHz.
Their compact design makes these voltage sensors ideal for initial installation or retrofitting of secondary substations or switchgear. The voltage sensor is screwed into the back of the T-connector at the cable outlet, instead of the sealing plug. The voltage sensor cone complies with DIN EN 50181 type C1, so it is suitable for installation in T-connectors according to DIN EN 50181 Type C1 from various manufacturers such as Nexans, Cellpack, Südkabel, Prysmian, etc. These voltage sensors comply with the IEC 61819-11 standard
Voltage sensor MGTK-V
MGTK-V 12 | 17.5 | 24 are passive small signal voltage sensor, for indoor medium voltage applications up to 24 kV, having extended frequency range for power quality measurement, with special versions for power quality harmonic measurement up to 3 kHz or up to 20 kHz.
Their compact design makes these voltage sensors ideal for initial installation or retrofitting of secondary substations or switchgear. The voltage sensor is screwed into the back of the T-connector at the cable outlet, replacing the sealing plug. The voltage sensor cone complies with DIN EN 50181 type C1, so it is suitable for installation in T-connectors according to DIN EN 50181 Type C1 from various manufacturers such as Nexans, Cellpack, Südkabel, Prysmian, etc. These voltage sensors comply with the IEC 61819-11 standard.
Voltage sensors for outdoor applications
Outdoor voltage sensor GSER(F) 16
The GSER(F) 16 outdoor voltage sensor measures DC, AC and mixed voltages in medium voltage applications up to 36 kV. The GSER 16(F) outdoor voltage sensor consists of a resistive voltage divider (R1, R2) that divides the primary voltage Up into a proportional secondary voltage Us. An electromagnetic shield ensures that the voltage sensor can be used even in environments with strong interference. Since there is no electrical isolation between the primary and secondary side, a surge arrester protects the downstream devices.
The GSER(F) 16 outdoor voltage sensor has the creepage distance 572 mm and the installation height 340 mm. It can be used, for example, in SVC, STATCOM and frequency converter systems. Its wide frequency range of up to 150 kHz makes it ideal for power quality measurements. Thus, it is used in combination with power analyzers in engine test benches. Protection functions can also be implemented. No auxiliary power is required. This voltage sensor complies with the IEC 61869-11 standard.
Outdoor voltage sensor GSER(F) 52
The GSER(F) 52 outdoor voltage sensor measures DC, AC and mixed voltages in medium voltage applications up to 52 kV. The GSER(F) 52 outdoor voltage sensor consists of a resistive voltage divider (R1, R2) that divides the primary voltage Up into a proportional secondary voltage Us. An electromagnetic shield ensures that the voltage sensor can be used even in environments with strong interference. Since there is no electrical isolation between the primary and secondary side, a surge arrester protects the downstream devices.
The GSER(F) 52 outdoor voltage sensor has the creepage distance 1433 mm and the installation height 683 mm. Its wide frequency range of up to 150 kHz makes it ideal for power quality measurements. It can be used, for example, in SVC, STATCOM and frequency converter systems. Thus, it is used in combination with power analyzers in engine test benches. Protection functions can also be implemented. No auxiliary power is required. This voltage sensor complies with the IEC 61869-11 standard.
Outdoor voltage sensor GSR
The GSR 27 | 38 are voltage sensor for indoor and outdoor applications up to 38 kV. The GSR voltage sensor is based on the principle of a resistive voltage divider and is primarily used as a signal generator for electronic signaling and protection devices in medium-voltage electrical networks.
The insulator housing is fully encapsulated in a cast resin for outdoor use. A key advantage of this lightweight, compact design is the linear and saturation-free transmission behavior across the entire voltage range. Ferroresonance phenomena are eliminated due to the design, which uses no ferromagnetic material.
The output voltages can be customized for specific applications upon customer request. The standardized output voltage of the sensor can also be calibrated using the customer's receiving devices. This voltage sensor complies with the IEC 61869-11 standard.
Combined sensors
The ABS 12 | 17.5 | 24 | 36 are combined sensors for installation in air-insulated switchgear, that combine current and voltage measurement functions, as well as voltage display in conjunction with an electronic protection relay.
The combined sensors ABS 12 | 17.5 | 24 | 36 are equipped as standard with a double-shielded cable and coaxial connector with gold-plated contact pins for the voltage signals. The coupling electrode for the voltage display is located on the right side next to the fully shielded secondary terminal area. The switch for the individual current measuring ranges is located under the mounting cover of the cable glands. Both the current and the voltage output can be operated continuously open or short-circuited. These combined sensors comply with the standard IEC 61869-10/-11.
Electronic voltage and current sensors
Electronic voltage sensor EGIW x64
The EGIW x64 electronic voltage sensor measures DC, AC, and mixed voltage with up to nine voltage sensors for applications such as power quality analysis and protection purposes. This electronic voltage sensor is used in medium voltage systems, such as static VAR converters and frequency converter systems. It complies with the standards IEC 61869-6 / IEC 60044-7.
The EGIW x64 voltage sensor converts the primary voltage Up into a low voltage, which is digitized in the electronics and transmitted to the receiver via an optical transmission path. On the secondary side, the received optical data is converted into an analog voltage corresponding to the high voltage on the primary side divided by the transmission ratio. Due to the optical transmission, a high degree of galvanic isolation is achieved between the primary and secondary sides, making the system highly resistant to strong electromagnetic influences and interference. An additional power supply (Ua) is required for the transmitting and receiving electronics. The system includes a monitoring function that detects power supply errors and transmission errors. These errors are indicated by the relay status and LEDs.
The available versions are:
EGIW 964 with GSER 16 ... 36 kV
EGIW 1064 with GSER 52 ... 72.5 kV
EGIW 1164 with GSER 3 ... 6 kV
EGIW 1264 with GBERA 12 … 36 kV
Electronic voltage sensor EGIW x85
The EGIW x85 electronic voltage sensor measures DC, AC, and mixed voltages with up to nine voltage sensors, for example, for power quality analysis and protection purposes. Its application area is medium voltage systems that require galvanic isolation between the primary and secondary voltages. The EGIW x85 sensor is an alternative to conventional voltage transformers when the primary voltage contains DC components and/or higher frequencies. It complies with the standard IEC 60044-7.
The EGIW x85 sensor consists of a passive low-power voltage converter (passive LPVT) and an isolation amplifier. The voltage divider inside the passive LPVT converts the primary voltage Up into a low voltage, which is digitized within the electronics. After galvanic isolation, the digital signal is converted back into the analog secondary voltage Us. An auxiliary power supply Ua is required for the operation of the electronics. The isolation amplifier provides isolation between both the primary and secondary voltages, as well as between the auxiliary power supply and all other connections, thereby amplifying the performance of the passive LPVT.
The available versions are:
EGIW 985 with GSER 16 ... 36 kV
EGIW 1085 with GSER 52 ... 72.5 kV
EGIW 1185 with GSER 3 ... 6 kV
EGIW 1285 with GBERA 12 ... 36 kV
Electronic voltage sensor EVBA x06
The EVBA x06 electronic voltage sensor measures DC, AC, and mixed voltages with high accuracy, for example, for engines management and power quality measurements. Its application area is medium-voltage systems where the voltage divider must be independent of the connected load. The EVBA x06 is an alternative to conventional voltage transformers when the primary voltage contains DC components and/or higher frequencies. It complies with the standard IEC 60044-7.
The EVBA x06 sensor consists of a passive low-power system, a voltage converter (passive LPVT), and a buffer amplifier. The voltage divider inside the passive LPVT transforms the primary voltage Up to a low voltage, which is processed in the electronics. An auxiliary power supply Ua is required for the operation of the electronics. Various protective devices ensure that high voltages cannot damage the electronics and secondary equipment, as there is no galvanic isolation between the primary and secondary side. The buffer amplifier makes the passive LPVT independent of the connected load and allows the output signal to be fed into more than one secondary system, thus expanding the performance of the passive LPVT.
The available versions are:
EVBA 006 stand-alone electronics
EVBA 906 with GSER 16 ... 36 kV
EVBA 1006 with GSER 52 ... 72.5 kV
EVBA 1106 with GSER 3 ... 6 kV
EVBA 1206 with GBERA 12 ... 36 kV
Electronic current sensor EMVI 7xx
The EMVI 7xx electronic current sensor directly measures alternating and mixed current for measurement, power quality analysis and protection purposes. Its application areas include high, medium and low voltage systems, such as static VAR compensators, substations, DC links and HVDC systems. The EMVI 7xx is an alternative to conventional current transformers when the primary current contains DC components and/or higher frequencies.
The EMVI 7xx is a current measuring system based on the zero-flux principle. The magnetic field generated by the primary current Ip is compensated by an opposing field of the secondary current Is. An electronic circuit detects the residual field and minimizes it by adjusting the secondary current Is. The secondary current is therefore an exact replica of the primary current. To obtain the secondary voltage Us, a differential amplifier measures the voltage across a high-precision, long-term stable shunt located in the secondary control circuit.
The control unit consists of a magnetic modulator and demodulator circuit, a power amplifier and an output. The operating point of the measuring device is set by the monitoring unit. If the primary current is outside the range and core saturation occurs, the operating point is automatically restored as soon as the current returns to the measurable range.