New products
NEW: For the German regulation "NELEV" and "EAAV"The grid decoupling relay UFR1002IP is the "big brother" of the UFR1001E and monitors voltage and frequency in three-phase and AC grids.With a color LCD display (German/English) and joystick, it is even easier to operate than the UFR1001E. Measured values and settings are clearly displayed. The device can be programmed, updates installed and the alarm memory read out via the integrated IP interface. The real-time clock (with power reserve) simplifies the traceability of the alarms. Up to 1,200 V can be monitored in conjunction with the VG1200 coupling device. The device has a two-channel, single-fault-safe design and thus meets the requirements of VDE-AR-N 4105:2018-11. The function of the connected switch is monitored. If monitoring is activated, the device does not switch on again if a switch-off error is detected.Limit values for different applications are preset. Where permitted, they can easily be changed. If the nominal voltage is changed, the device automatically adjusts the limit values. With the standby input, a remote shutdown can be implemented, e.g. with a ripple control receiver.Monitoring ofUnder/over voltage 15-520V (with ZIEHL VG1200 coupling device up to 1,200 V)Under/over frequency 45-65 HzVoltage quality (10-minute average)Vector shift 2-65°ROCOF, rate of change of frequency df/dt 0.100...5.000 Hz/sZero voltage U0 (ANSI 59v0)passive anti islanding protectionFeatures:single-fault-proof, with monitoring of connected switch (can be switched off when using the integrated switch of PV and battery convertersProgrammable restart attempts in the event of a switch-on error in the connected switchRelay K3 with programmable functions, including life contact, delayed switch-on signal for switches or error messagesResponse time adjustable 0.05 … 300,0 sSwitch-back time adjustable 0 … 6,000 sPreset according to VDE-AR-N 4105-2018-11 (Pr 1.02, Pr 1.08 + 1.09) and VDE-AR-N 4105-2011-08 (Pr 1.01)Preset according to VDE-AR-N 4110-2018-11 (Pr 1.11-1.14) and bdew guideline (Pr 1.03-1.06)automatic adjustment of the switching points when the nominal voltage is changedAlarm counter for 100 alarms (with trigger value, cause and date/time, time of restart)3 programmable digital inputsStandby counter and timer with standby on/off date/timeTest and simulation function with measurement of switch-off timesSealing option and code protection for settingsInterface ethernet TCP/IP, values available via modbus TCPSimple commissioning and programming thanks to preset basic programs and transmission via IP interfaceSupply voltage AC/DC 24-270 VHousing for DIN-rail-mount, 105 mm wide, mounting height 66 mmAccessory: Installation frame ER6 for panel mount
Zero Export Device and Energy Flow Relay, optimization of self-consumption of self generated energy.The successor model to our popular EFR4001IP: Relays for energy flow measurement type EFR4002IP monitor the current flow between public power grid and generating plant / consumer. Operation is made comfortably via integrated webserver or directly at the device. Measured values are displayed neatly arranged at device on monitor. When the own power plant generates more power than actually is consumed it often is more economical to consume the excess energy self. This is especially reasonable when the difference is high between the price you pay to the grid provider and the price the provider pays for fed in energy.Many areas suitable for photovoltaics could not be used so far, since only a limited amount of power can be fed in at the grid connection point. In Germany new standards VDE-AR-N 4105:2018-11 allow exceeding this value by up to 66.6% or more installed capacity. The prerequisite for this is that the overbuilt power is consumed and not fed into the grid. In order to still ensure the stability of the system, this can be monitored with EFR4002IP. The same applies to zero export, when no energy at all may be fed into the grid. In this case, the device can be used as an energy flow direction sensor (EnFluRi). The EFR4002IP has been optimized for these functions.Data exchange with PPC (Power Plant Controller) possible.Functions:Switching of up to 3 consumers: the largest consumer, ranked 1-2-3 or combination of 3 consumers (7 levels)Switch on and off points. At which energy flow consumers are switched on and off againSwitch on and off delay of consumers, minimum on time.Control of heat pumps (SG-ready), battery chargers, invertersFor the use of Rogowski coils, please have a look at our EFR4002IPRNEW:Can be used for medium-voltage applications Connection of earthed medium-voltage transformers and series connected measuring devicesFor the German regulation "NELEV" and "EAAV"Suitable current transformers:Current transormers scaleable up to 2.400 A, secondary 1 A or 5 A (for Pav,e min. class 1) for example ZIEHL Type AS or WSCompact CTM7, 64/1 A, Kl. 1, 0,5 VA
In order to achieve higher efficiencies and to reduce line losses, inverters with a higher output voltage than the usual 3AC 400 V are often used in large on-site generation systems.So that the grid and system protection can monitor this high voltage, it must be reduced. This is usually done with voltage converters. With the VG1200 coupling device, an ohmic voltage divider is available that takes on this task. In conjunction with the VG1200 coupling device, the UFR1002IP can measure voltages of up to 1200 V. The display in the UFR1002IP is scalable. This means that the voltages at the input of the VG1200 are displayed and the limits for protection against over- and undervoltage are set accordingly. Both devices together meet the requirements of VDE-AR-N 4110 (feeding into the medium-voltage grid).Measuring of voltage up to 1200 VMeasuring tolerance = 1,2% of nominal voltage (of UFR1002IP)No voltage converters requiredDisplay of the correct voltage on the UFR1002IP (scalable)No supply voltage requiredHousing V6, 105 mm wide
NEW: Our EFR4002IPR, specifically for the use of Rogowski coils Measuring input: 333mV for Rogowski coilsEnergy flow direction sensor and feed-in limitation, Trigger time less than 0.05sZero-Export device or Limiter less than 0.2 sPPC (Power Plant Controller) -compliant communication Zero Export Device and Energy Flow Relay, optimization of self-consumption of self generated energy.Our relays for energy flow measurement type EFR4002IPR monitor the current flow between public power grid and generating plant / consumer. Operation is made comfortably via integrated webserver or directly at the device. Measured values are displayed neatly arranged at device on monitor. When the own power plant generates more power than actually is consumed it often is more economical to consume the excess energy self. This is especially reasonable when the difference is high between the price you pay to the grid provider and the price the provider pays for fed in energy.Many areas suitable for photovoltaics could not be used so far, since only a limited amount of power can be fed in at the grid connection point. In Germany new standards VDE-AR-N 4105:2018-11 allow exceeding this value by up to 66.6% or more installed capacity. The prerequisite for this is that the overbuilt power is consumed and not fed into the grid. In order to still ensure the stability of the system, this can be monitored with EFR4002IPR. The same applies to zero export, when no energy at all may be fed into the grid. In this case, the device can be used as an energy flow direction sensor (EnFluRi). The EFR4002IPR has been optimized for these functions.Data exchange with PPC (Power Plant Controller) possible.Functions:Switching of up to 3 consumers: the largest consumer, ranked 1-2-3 or combination of 3 consumers (7 levels)Switch on and off points. At which energy flow consumers are switched on and off againSwitch on and off delay of consumers, minimum on time.Control of heat pumps (SG-ready), battery chargers, inverters
Relay for Voltage and Frequency UFR1002IP
NEW: For the German regulation "NELEV" and "EAAV"The grid decoupling relay UFR1002IP is the "big brother" of the UFR1001E and monitors voltage and frequency in three-phase and AC grids.With a color LCD display (German/English) and joystick, it is even easier to operate than the UFR1001E. Measured values and settings are clearly displayed. The device can be programmed, updates installed and the alarm memory read out via the integrated IP interface. The real-time clock (with power reserve) simplifies the traceability of the alarms. Up to 1,200 V can be monitored in conjunction with the VG1200 coupling device. The device has a two-channel, single-fault-safe design and thus meets the requirements of VDE-AR-N 4105:2018-11. The function of the connected switch is monitored. If monitoring is activated, the device does not switch on again if a switch-off error is detected.Limit values for different applications are preset. Where permitted, they can easily be changed. If the nominal voltage is changed, the device automatically adjusts the limit values. With the standby input, a remote shutdown can be implemented, e.g. with a ripple control receiver.Monitoring ofUnder/over voltage 15-520V (with ZIEHL VG1200 coupling device up to 1,200 V)Under/over frequency 45-65 HzVoltage quality (10-minute average)Vector shift 2-65°ROCOF, rate of change of frequency df/dt 0.100...5.000 Hz/sZero voltage U0 (ANSI 59v0)passive anti islanding protectionFeatures:single-fault-proof, with monitoring of connected switch (can be switched off when using the integrated switch of PV and battery convertersProgrammable restart attempts in the event of a switch-on error in the connected switchRelay K3 with programmable functions, including life contact, delayed switch-on signal for switches or error messagesResponse time adjustable 0.05 … 300,0 sSwitch-back time adjustable 0 … 6,000 sPreset according to VDE-AR-N 4105-2018-11 (Pr 1.02, Pr 1.08 + 1.09) and VDE-AR-N 4105-2011-08 (Pr 1.01)Preset according to VDE-AR-N 4110-2018-11 (Pr 1.11-1.14) and bdew guideline (Pr 1.03-1.06)automatic adjustment of the switching points when the nominal voltage is changedAlarm counter for 100 alarms (with trigger value, cause and date/time, time of restart)3 programmable digital inputsStandby counter and timer with standby on/off date/timeTest and simulation function with measurement of switch-off timesSealing option and code protection for settingsInterface ethernet TCP/IP, values available via modbus TCPSimple commissioning and programming thanks to preset basic programs and transmission via IP interfaceSupply voltage AC/DC 24-270 VHousing for DIN-rail-mount, 105 mm wide, mounting height 66 mmAccessory: Installation frame ER6 for panel mount
Coupling Device for Voltage Type VG1200
In order to achieve higher efficiencies and to reduce line losses, inverters with a higher output voltage than the usual 3AC 400 V are often used in large on-site generation systems.So that the grid and system protection can monitor this high voltage, it must be reduced. This is usually done with voltage converters. With the VG1200 coupling device, an ohmic voltage divider is available that takes on this task. In conjunction with the VG1200 coupling device, the UFR1002IP can measure voltages of up to 1200 V. The display in the UFR1002IP is scalable. This means that the voltages at the input of the VG1200 are displayed and the limits for protection against over- and undervoltage are set accordingly. Both devices together meet the requirements of VDE-AR-N 4110 (feeding into the medium-voltage grid).Measuring of voltage up to 1200 VMeasuring tolerance = 1,2% of nominal voltage (of UFR1002IP)No voltage converters requiredDisplay of the correct voltage on the UFR1002IP (scalable)No supply voltage requiredHousing V6, 105 mm wide
Voltage and Frequency Relay Type UFR1001E
The grid- and plant protection device UFR1001E monitors voltage and frequency in plants for own generation of electricity. It complies with the requirements of VDE-AR-N 4120:2018-11, VDE-AR-N 4110:2018-11, VDE-AR-N 4105:2018-11, G98 and G99, ÖVE/ÖNORM E 8001-4-712:2009 and other standards for generators connected to the public grid.The UFR1001E is a dual-channel device and thus one-fault-proof. The function of the output-relays and of the connected switches can be monitored with feed-back contacts. When a connected switch does not switch off, the UFR does not switch on again. When a switch does not switch on it makes 2 restarts and thus improves availability of monitored plant.The limits are pre-set according to VDE-AR-N 4105-2011-08, VDE-AR-N 4105:2018-11 and other standards. They can be changed if required and be protected with a code and/or a seal.With a 2-step test both channels can be tested individually and the triggering time of connected switches is measured.The standby input allows a remote shutoff e.g. with a RCR.NEW: Our UFR1002IPWould you like to measure upt o 1,200 V?You need an interface (Modbus TCP)?You want a plain text LCD display?You need a seperate life contact?Then Take a look at the new UFR1002IP!
Zero Export Device Type EFR4002IP
Zero Export Device and Energy Flow Relay, optimization of self-consumption of self generated energy.The successor model to our popular EFR4001IP: Relays for energy flow measurement type EFR4002IP monitor the current flow between public power grid and generating plant / consumer. Operation is made comfortably via integrated webserver or directly at the device. Measured values are displayed neatly arranged at device on monitor. When the own power plant generates more power than actually is consumed it often is more economical to consume the excess energy self. This is especially reasonable when the difference is high between the price you pay to the grid provider and the price the provider pays for fed in energy.Many areas suitable for photovoltaics could not be used so far, since only a limited amount of power can be fed in at the grid connection point. In Germany new standards VDE-AR-N 4105:2018-11 allow exceeding this value by up to 66.6% or more installed capacity. The prerequisite for this is that the overbuilt power is consumed and not fed into the grid. In order to still ensure the stability of the system, this can be monitored with EFR4002IP. The same applies to zero export, when no energy at all may be fed into the grid. In this case, the device can be used as an energy flow direction sensor (EnFluRi). The EFR4002IP has been optimized for these functions.Data exchange with PPC (Power Plant Controller) possible.Functions:Switching of up to 3 consumers: the largest consumer, ranked 1-2-3 or combination of 3 consumers (7 levels)Switch on and off points. At which energy flow consumers are switched on and off againSwitch on and off delay of consumers, minimum on time.Control of heat pumps (SG-ready), battery chargers, invertersFor the use of Rogowski coils, please have a look at our EFR4002IPRNEW:Can be used for medium-voltage applications Connection of earthed medium-voltage transformers and series connected measuring devicesFor the German regulation "NELEV" and "EAAV"Suitable current transformers:Current transormers scaleable up to 2.400 A, secondary 1 A or 5 A (for Pav,e min. class 1) for example ZIEHL Type AS or WSCompact CTM7, 64/1 A, Kl. 1, 0,5 VA
Universal Measuring Transducer Type MU2000K
Measuring transducers MU2000K can measure DC- an AC-voltages up to 600 V and DC- and AC-currents 0-1/5 A.Preset measuring ranges can be selected. More measuring ranges (zero and full-scale) can be easily scaled. The output signals DC 0/2-10 V and 0/4-20 mA are insulated from measuring input and supply voltage. With its universal supply voltage AC/DC 24-240 V the measuring transducer can be connected to all common supply voltages.The MU2000K e.g. is suitable for measuring DC voltages and charging currents at batteries or for measuring AC voltages and currents in plants for own generation of energy.Changes from T236053 to T236056: Version with spring terminals RoHS/REACH compliantFurther information can be found in our customer information: "New terminals for K-type devices"Overview of functionsOutput signal 0-20mA and 0-10V or 4-20mA and 2-10VRated Supply Voltage AC/DC 24-240VInsulation between inputs, outputs and supply voltage (3-way isolator)InputsAC/DC 0 … 600 V (preset values: 0…30 V / 80…120 V / 0…150 V / 0…300 V / 0…600 V)AC/DC 0 … 5 A (preset values: 0…1 A / 0…5 A)In measuring ranges for AC also DC-signals can be measured. Negative signals will be measured as positive signals.Zeros and Full Scales for more measuring-ranges can be freely selected by the user. Discover the difference between our MU series! Type MU1000K MU1001K MU2000K Measuring values 0/4…20 mA, 0–10 V, PT100 0…±60/150/300 mV DC, 0…±10/300 V DC 0…30/150/300/600 V AC/DC, 0…1/5 A AC/DC Output signals 0/4…20 mA, 0/2–10 V 0/4…20 mA, 0/2–10 V 0/4…20 mA, 0/2–10 V Scaling adjustment 2 buttons: programs or signal calibration 2 buttons: programs or signal calibration 2 buttons: programs or signal calibration Display LEDs 1× Power, 3× Setting 1× Power, 3× Setting 1× Power, 3× Setting Test voltage between potentials 3540 V 3540 V 3540 V Input resolution 14 bit 14 bit 14 bit Output resolution 11.6 bit: < 3.1 mV; < 6.1 µA 11.6 bit: < 3.1 mV; < 6.1 µA 11.6 bit: < 3.1 mV; < 6.1 µA Housing type K K K Measuring time Voltage/current: < 20 ms;Temperature: < 350 ms < 20 ms Adjustable measurement time Main areas of application Signal isolation Signal conversion, voltage measurement Voltage and current measurement
Rogowski Coil NRCM
The NRCM Rogowski coils enable precise measurement of AC currents over a wide measuring range. The coil detects alternating currents non-invasively via the magnetic field around the conductor and converts this into a corresponding output voltage. Thanks to the bayonet lock, the coils can be easily retrofitted into existing installations. The Rogowski coil has an accuracy class 1 and a rated impulse withstand voltage of up to 4000 V.3 Rogowski coils are required to operate the EFR4002IPR.
Frequency- and Speed Relay Type FRMU1000 / FR1000
The FRMU1000 is a speed-monitor, a frequency-monitor and a measuring-transducer in one device.2 limits with 1 relay each can be programmed for under- or overspeed, under- or overfrequency or each monitoring of a range (min/max).The input for monitoring of speed can evaluate signals from proximity-sensors 2- or 3-wire, npn- or pnp. The display can be scaled. Thus the real speed of a shaft can be displayed, even though there are several pulses per revolution, e.g. from a cogwheel.Application as Frequency-RelayMonitoring of frequencies in mains 16 2/3 to 400 Hz on maintaining a range (min/max).Application as Speed-RelayMonitoring of overspeed or underspeed, each with pre-alarm and alarm, monitoring of maintaining a range (min/max) or monitoring of stop at machines and equipment, e.g. at conveyors, escalators or lifts or for monitoring of drive-belts.Applications as Measuring Transducer (FRMU only)In addition, the FRMU can be used as measuring-transducer to convert the input-signal into a standard-signal 0/4-20 mA or 0-10 V.
Zero Export Device Type EFR4002IPR
NEW: Our EFR4002IPR, specifically for the use of Rogowski coils Measuring input: 333mV for Rogowski coilsEnergy flow direction sensor and feed-in limitation, Trigger time less than 0.05sZero-Export device or Limiter less than 0.2 sPPC (Power Plant Controller) -compliant communication Zero Export Device and Energy Flow Relay, optimization of self-consumption of self generated energy.Our relays for energy flow measurement type EFR4002IPR monitor the current flow between public power grid and generating plant / consumer. Operation is made comfortably via integrated webserver or directly at the device. Measured values are displayed neatly arranged at device on monitor. When the own power plant generates more power than actually is consumed it often is more economical to consume the excess energy self. This is especially reasonable when the difference is high between the price you pay to the grid provider and the price the provider pays for fed in energy.Many areas suitable for photovoltaics could not be used so far, since only a limited amount of power can be fed in at the grid connection point. In Germany new standards VDE-AR-N 4105:2018-11 allow exceeding this value by up to 66.6% or more installed capacity. The prerequisite for this is that the overbuilt power is consumed and not fed into the grid. In order to still ensure the stability of the system, this can be monitored with EFR4002IPR. The same applies to zero export, when no energy at all may be fed into the grid. In this case, the device can be used as an energy flow direction sensor (EnFluRi). The EFR4002IPR has been optimized for these functions.Data exchange with PPC (Power Plant Controller) possible.Functions:Switching of up to 3 consumers: the largest consumer, ranked 1-2-3 or combination of 3 consumers (7 levels)Switch on and off points. At which energy flow consumers are switched on and off againSwitch on and off delay of consumers, minimum on time.Control of heat pumps (SG-ready), battery chargers, inverters
Current Transformer for AC-Current Type AS
For currents >5A current monitors require a current transformer with secondary 1 or 5 A and a rated capacity of 1.5 VA. The primary rated current must be appropriate to the max. expected current (fuse). Tube ore wound current transformers can be used.For primary rated currents of 60 to 500 A we recommend using AS tube current transformers, suitable for the Cu-rail of 30 x 10 mm or 2 x 20 x 10 mm or round conductor of 28 mm. The transformers have Class 1 accuracy and a voltage resistance of up to 800 V. When ordering, please indicate desired primary and secondary rated current.
Compact current transformer CTM7
The compact current transformer is especially suitable for use in tight space conditions. With its primary 64 A it matches perfectly the 63 A with which domestic connections are usually fused.The secondary 1 A are connected to EFR. The inputs of the EFR are preset for primary currents 60 A, changing is simple. A clip for mounting on DIN-rail is included. The transformers can be clicked together for saving space. For EFR three current transformers are required.
Universal Voltage Relay Type SW32V
The SW32V voltage relay is a high-quality voltage monitor with a large measurement range for monitoring direct, alternating and three-phase networks for overvoltage and/or undervoltage. In three-phase current networks, phase symmetry and phase sequence can be monitored in addition.The limits are set in volts. That allows using the unit with various rated voltages.The digital display is used to display the measurements and to precisely set limits, response times and functions.Summary of the functionsFor use as a voltage monitor in energy generation and distribution plants, especially in-plant systems such as PV plants or combined heat and power plants. Voltage monitoring in machines and plants to prevent errors, damage or failures in sensitive equipment or devices.Voltage monitoring in direct current networks DC 10.0…600 VVoltage monitoring in alternating current networks AC 15.0…480 VVoltage monitoring in three-phase current networks with//without N up to 3AC 830 VPreset programs for grid- and plant protection according to VDE-AR-N 4110:2018-11Asymmetrical and phase sequence monitoring connectableReal root mean square measurement (for AC, both half waves)2 Alarms/output relays, 1 each change-over contactAlarm and reset delay for every limit value can be individually setSetting of limits and hysteresis in voltsMeasurement value simulation to check the settingsCode lock can be enabledControl voltage AC/DC 24-270 VDistributor housing for panel mounting, 4 TE (70 mm), front-to-back size 55 mmMounting on 35 mm mounting rails DIN EN 60715
Current Transformers for AC-Current Type WS
For currents >5A current monitors require a current transformer with secondary 1 or 5 A and a rated capacity of min. 1,5 VA. The primary rated current must be appropriate to the max. expected current (fuse). Tube or wound current transformers can be used. We recommend the use of WS tube current transformers for primary rated currents of 5 to 30 A.The transformers have a class 1 accuracy and a voltage resistance of up to 800 V.When ordering, please indicate desired primary and secondary rated current.
Current-Relay Type SolarYes
The SolarYes monitors outputs of inverters in PV-systems. Its output-relays (2 potential-free contacts) switch, when there has been no current during the last 24 hours in one of up to 8 monitored lines. Thus the failure of an inverter or a fuse is detected and reported. The operator can initiate repair immediately and saves downtime.The SolarYes is a simple, easily understandable and economical solution, that protects PV-systemsfrom downtimes.The device is mounted in a switch cabinet or a distribution box. The current is measured contactless with simple and solid current transformers, that are mounted over the line at any position, e.g. near the fuses. A subsequent installation in an existent system is possible. Over the course of 24 hours occurring minimal currents (at night there can be wattles currents, caused by interference suppression capacitors in the inverter) are automatically measured and faded out in the evaluation.The minimum response limit of 0,3 A allows measuring of low current-levels. The limit can de reduced by leading the monitored line multiple times through the transformer (Ø 11 mm). In case of false alarms, e.g. with snow on the solar modules, the monitoring interval can be extended to up to 8 days or the alarm can be suppressed with a switch.The 2 output-relays can switch alarm-lamps or electroacoustic transducers. The connection of an alarm system or another monitoring unit also is possible.Inputs8 inputs for current transformers STWA1 or STWA1H (max. 100 A)Not connected inputs disconnectibleSensitivity adjustable AC 0,3…2,4 A (lower values by leading the monitored line multiple times through the transformer)Autocalibration of inputsEnable-inputDisplays and Controls8 LEDs for inputs8 LEDs for alarms4 LEDs for display of state and programming2 LEDs for relays1 LED enable-input3 pushbuttonsOther features:2 change-over contacts, nc and no individually programmableAutocalibration for easy startupPower-saving (Eco-Mode), disconnectiblePower consumption <0,5 W, <1,2 VAUniversal supply-voltage AC/DC 24-240 VHousing for DIN-rail mount, 70 mm, mounting height 55 mmAccessory: Front mounting kit type ER4
Current transformer KBR 18S
The split core current transformer KBR18S is especially suitable for being subsequently mounted in existing facilities. With its primary 60 A it matches perfectly the 63 A with which domestic connections are usually fused. The secondary 1 A are connected to EFR. The inputs of the EFR are preset for this value. A clip for mounting on DIN-rail is included.For EFR three current transformers are required.
