|
|
|
|
|
|
Reliable fire and system protection:
Differential current monitor type B with pre-warning function, measuring range from10 mA to 3 A.
Early detection of insulation faults can prevent failure of complete electrical plants. Fault current monitoring by measuring differential current is the ideal method for this application. The monitoring requirement for today’s supply systems get more and more complex. Electronic control of drives, switched power supplies and chargers or fluorescent lamps with electronic ballast units can create DC fault currents in the case of earth faults. Standard differential current monitors do not detect this type of faults.
Type B differential current monitor DOLD varimeter IP5883 detects DC and AC fault currents in grounded voltage systems. The measurement is done by an external current transformer.
Contrary to RCD units, IP5883 does not disconnect the mains immediately but signals the fault. The unit includes an easy to read LED bar indicating the fault current and LEDs for operation, pre-alarm and alarm. The measuring range is 10 mA to 3 A. Additional features: broken wire detection, adjustable pre-alarm and test function. This varimeter offers advanced information for specific and cost effective maintenance BEFORE the plant breaks down.
|
|
|
|
|
|
The RCMS system consists of one or several RCMS460-D / -L or RCMS490-D / -L residual current evaluators, which are able to detect and evaluate fault, residual and operating currents in earthed power supplies via the associated measuring current transformers. The maximum voltage of the system to be monitored depends on the nominal insulation voltage of the measuring current transformers used in case of busbar systems, or on the cables or conductors that are routed through.
Closed W...AB series measuring current transformers are required to measure AC /DC sensitive residual currents (0...2000 Hz). Six W...AB series measuring current transformers require one AN420 power supply unit. W... (closed), WR... (rectangular) and WS... (split-core) series measuring current transformers are used for alternating and pulsating currents (42...2000 Hz).
The measuring current transformer series can be used in any combination with the measuring channels of the evaluators. Each RCMS460-D / -L and RCMS490-D / -L utilizes 12 measuring channels. Up to 90 RCMS evaluators can be connected via a BMS bus (RS-485 interface with BMS protocol), thereby up to 1080 measuring channels (sub-circuits) can be monitored.
If this product is to be used for personnel, fire or plant protection, the frequency response can be set accordingly. The measured currents can be analyzed for harmonics.
|
|
|
|
|
|
The AC and pulsed DC sensitive residual current monitor RCMA420-D (Type A) from Bender is designed for fault and residual current monitoring in earthed power supply systems (TN and TT systems) where an alarm is to be activated in the event of a fault, but disconnection must be prevented. In addition, the device can be used to monitor the current in single conductors, such as PE conductors, N-PE connections and PE-PAS connections. Due to the use of measuring current transformers, the device is nearly independent of the load current and the nominal voltage of the system.
The response value can be adjusted in the range of 10...500 mA. When the prewarning level is reached (50% to 100% of the response value), an alarm message is generated. This information achieved sufficiently well in advance can avoid unexpected disconnections and costly downtimes.
Typical application fields are: Residual current monitoring in earthed two, three or four conductor systems; construction site equipment; current monitoring of single conductors de-energized under normal conditions; socket-outlet circuits for devices which are operated unattended for a long time and which may not fail; alarm systems; safety devices.
|
|
* The only two-in-one current/voltage detector designed for electrical testing
* Non-Contact AC Voltage detection
from 12V to 600VAC
* Non-Contact AC Current detection
from 200mA to 1000A
* Sensitivity adjustments to increase or
reduce sensor trigger threshold
* Current sensor detects current flow through shielded wires, conduit, and metal circuit breaker/junction boxes
|
|
* Non-contact AC Current range
is from 200mA to 1000A
* Locates current flow even where
voltage detectors cannot work
* Detects through shielded wires, conduit, and metal circuit breaker or junction boxes
* Sensitivity adjustment for locating wires/conduit through walls
* Audible and visible indication
|
|
| ... products without technical information |
| |
Terasaki offers a cost effective solution for the measurement ofthe main
electrical parameters in electrical distribution networks.
The selection of the parameters to be measured can be easily visualised with the help of a clear and concise LED display.
Simple to set up with programmable CT. ratio from the front of the meter-Available in panel mounted and DIN rail mounted versions.
The fourth display allows simultaneous reading of two different parameters
Monitors the cubicle temperature
TheTEMM range offers a comprehensive selection of multifunction
meters to suit any application.
|
|
MV substation control unit
Description
Easergy T200I integrates within a single unit, all functions to remote control an MV substation:
Management of 1 to 16 switchgear/circuit breaker
Uninterruptible power supply 24 or 48 Vcc
Fault passage indicator
Current measurements
MV network reconfiguration automation functions
Local display and control
Large catolog of protocols:IEC 870-5-101 and 104, DNP3, Modbus and various customer owned protocols
Various transmission systems: Ethernet, RS232, Radio, PSTN, GSM, GPRS, private line...
|
|
Power test systems are made for single-phase and three-phase power quality testing applications. Record and analyze power at any base frequency from milliHertz to 800 Hz, and still add any of the unique DEWETRON capabilities - video, GPS, additional analog sensors, etc. POWER QUALITY is as an add-on to just about any DEWETRON system, so please look at any of our multifunction systems as a platform.
|
|
Features:
- Mixture Viscosity
- Tool Condition
- Optimum Feed Rate
- Pump or Fan Flow
- Beginning or End Process
- Obstructions
- Overloads
- Loss of Load
|
|
Patented Autophase technology actually corrects common wiring errors. Analog and network models available. Click on the appropriate series to see details below...
...or select data sheets in PDF format from this list.
The AutoPhase Advantage
AutoPhase makes power transducer installation simple.
There are over 40 ways to wire up a 3 phase, 4 wire kW transducer. For example, reversing the orientation of a CT flips the output waveform, tricking ordinary watt transducers into thinking there is a 180 degree phase shift. Or if CT and voltage inputs are mismatched, the transducer thinks there is a 120 degree phase shift. Either way, you have a problem.
AutoPhase identifies the phases and polarity automatically and corrects for the error in software. This eliminates flashing "ERROR" lights, tedious and dangerous reconnecting of inputs. AutoPhase even tells you which CTs are reversed and which phases are mismatched!
|
|
Application:
- On-site dielectric measurements of high and low voltage insulations, such as voltage and power transformers as well as generators and motors
- Easily and inexpensively perform periodic diagnostic tests
Features:
- Signal acquisition, amplifying, digitization completely implemented in the sensors
- Potential free, optical, digital data transmission
- Frequency independent and frequency selective measurement
- Extremely high precision of the measured values, best automatic modulation
- Continuous measurement without bridge balancing
- Real time display of all loss-impedance characteristics (graphically and tabular scheduled)
- Long time measurement and monitoring by using automatic storage routines
|
|
Power factor controllers
Description
The Varlogic controllers permanently measure the reactive power of the installation and control connection and disconnection of capacitor steps In order to obtain the required power facto. The range is composed of:
NR6 control up to 6 capacitor steps
NR12 control up to 12 capacitor steps
NRC12 control up to 12 capacitor steps and offer some more functions and Modbus communication option
They simplified the installation, supervision and maintenance of reactive power compensation equipment
panel mounting on 35 mm DIN rail (EN 50022)
insensitive to phase rotation polarity
standards:CEI 61326 (CEM); CEI 61010-1, EN 61010-1
|
|
| ... products without technical information |
| |
|
|
|
|
Hour Meter for Panel Mounting:
The counters are available for connection in AC and DC circuits. AC counters are driven by a synchronous motor with an appropriate gear system. The DC unit incorporates a quartz clock mechanism.
Ammeters and Voltmeters for Panel Mounting:
Available with moving coil or moving iron movement for DC or AC measurement. They are fitted into Ex d enclosures and are suitable for panel mounting.
Potentiometer for Panel Mounting:
Series 8218 potentiometers are available as slide-wire potentiometers with a rated capacity of 10 W and as precisions potentiometers with a rated capacity of 3 W or 5 W.
Preset Pulse Counter for Panel Mounting:
Has the following features:
High input frequency, max. 5 kHz
Various input options
High counting accuracy
High security against interference voltages
Time Relay for Panel Mounting:
Both pre-selected time range and time setting can be adjusted externally during operation. The timer relays can be supplied in pick-up delayed and drop-out delayed versions.
|
|
|
|
|
|
Small and practical radiation monitors worn directly on the body are used for personal safety in strong electromagnetic fields. Visual and acoustic warning signals alert the user when threshold values are exceeded, for example during service work on transmitting equipment for radio relay, satellite and broadcast communications as well as radar and telecommunication facilities.
RadMan has been designed for daily use, not just as a warning and monitoring device, but also for taking quick measurements of EMF levels present in the immediate environment and detecting leaks in antenna cables.
The sensors are integrated in an orthogonal pattern, which allows them to measure electrical fields (up to 40 GHz) and magnetic fields (up to 1GHz) separately and independently of direction. This makes it simple and quick to test the EMF situation in the workplace at any time. RadMan is also an excellent tool for finding leaks in cables and power supplies for antenna connections.
Monitors in the RadMan range are also available as an "XT" version with a long-term data memory for monitoring and recording the minimum, maximum and average radiation levels. With the help of analysis software it is also possible to evaluate the results as easy-to-read graphics or tables.
|
|
|
The TAG5000 is the first appliance with cable liaison to be fitted with a transmitter and a receiver with HF radio liaison. It eliminates all hazards related to the use of liaison cables. Its range is up to 20m in the air and 1000m along the network. Obstacles such as walls, doors, etc. do not disrupt the liaison. It can be adapted to all types of insulating rods by means of universal connectors.
|
|
High Voltage test equipment for the utility and power industry:
AC, DC, Impulse Test Sets
Resonant Test Sets
Partial Discharge Detectors
Dissipation Factor & Capacitance Measuring Bridges
Compressed Gas Capacitors
Digital Transient Recorders
HV Components and Devices
Monitoring Equipment
Transformer Loss Measurement Systems
Complete High Voltage Test Floors
|
|
| ... products without technical information |
| |
|
|
|
|
myDataweb
myDataweb provides the user interface and the central storage server for the system myDatanet with 50/500/1500 instruments.
myDataweb enables the user to easily analyse its' measurement data and change the configuration of measurement sites.
Product Characteristics myDataweb:
- Data retrieval over any period in a fraction of a second
- Voluminous statistics about system usage
- Additional languages possible
- Rapid and easy installation of instruments
- Easy management of customers - add, remove and edit
- Compatible to all web-browsers
- Low hardware requirements
- Support for multiprocessor, multicore, load balancing and distributed systems included
- No additional software costs
- Single point of configuration - rapid and cost efficient adaptation of the whole system to the provider's needs
- Optimised communications protocol saves data volume on GPRS connections
- up to 20 years data preservation at 1 min measuring intervals for 50/500/1500 instruments
- no-break repair service saves cost and reduces planned and unplanned downtimes
- continuous automatic operation
- minimum management overheads for reliable operation
- integrated RAID 1 (50/500), RAID 5 (1500)
- easily changeable hard disks
- easy and rapid license extension
|
|
|
|
see the results for the following category : 
