Portable power fault recorder

Application of this  portable instrument is limited to Czech/Slovak market. For international inquiries please see SIMON portable network analyzers.

For  failure events recording on voltages, currents and logical signals in power networks of home, high, and possibly also very high voltages. It is especially suitable for capturing and identification of random one-shot events in the power mains, such as short-run over-voltages, under-voltages or over-currents.

Characteristics

• Designed for recording failure events - course of voltages, currents and logical signals in power networks of home, high, possibly also very high, voltages
• Especially suitable for capturing and identification of random one-shot events in the power mains, such as short-run overvoltages, undervoltages or overcurrents
• 3/4 galvanic isolated voltage inputs of 100 V AC and 400 V AC range
• 3/4 current inputs for use of current probes and clamps with voltage output in 0,1 ÷ 3V AC range
• Eight binary logical signals (e.g. protective components' contacts)
• Sampling frequency up to 4 kHz
• Data stored in an exchangeable SRAM memory PC-card (PCMCIA)
• Supply voltage 230 V AC, backed up with a built-in accumulator
• Setting, data visualization and processing with Cetis32 program

Description

This instrument was designed for recording failure events-course of voltages, currents and logical signals in power networks of home, high, possibly also very high, voltages. It is especially suitable for capturing and identification of random one-shot events in the power mains, such as short-run over-voltages, under-voltages or over-currents.

The home power mains voltage of 3 x 230/400 V or, when measuring indirectly via a voltage measuring transformer, the 3 x 58/100 V standardized voltage can be connected to the instrument. The voltages measured can be star- or delta-connected. All the voltage inputs are fully galvanic isolated from each other.

There are three connectors for current clamp transformers with a voltage output or for AmpFLEX flexible current sensors to measure currents. The instrument accessories include a wide choice of different types of clamp transformers allowing to measure currents in the range 0.1 A through 3,000 A.

Further, up to eight binary logical signals can be connected to the instrument (e.g. protective component contacts).

An alternate current voltage in the range 58 ÷ 250 V / 50 Hz or a direct current voltage in the range 100 ÷ 370 V (principal supply voltage) can power the instrument. The instrument features a built-in accumulator to bridge power drop-outs, which can power the instrument for two hours' time when fully charged. If the principal supply voltage is present, this accumulator is being charged continually. In case powering the instrument without the principal supply voltage for an extended period of time, an external auxiliary direct current supply voltage of 12 V can be connected (from an external battery).

The course of values measured can be sampled at up to 4 kHz. It is stored in the instrument built-in memory or in an exchangeable SRAM memory card in compliance with the PC-card v. 2.0 (PCMCIA) standard. The number of courses of values depends on a record length, sampling frequency and memory capacity.

Two output relays are provided to signal the instrument condition; one relay signals the current record of a failure event in progress, the other indicates the pre-set value of filling the memory capacity.

A backed-up real time generator is provided for time sample identification of the courses of values measured. In case continual precise time keeping is required, it is possible to connect a synchronization minute or quarter-an-hour pulse to one of the digital inputs.

The instrument has to be set up for the function required before measuring. After the voltage, current and digital signals required have been connected, the instrument can be started. Since then on the instrument continually senses the input signals and when a pre-set trigger condition is detected, the instrument records the failure event into the memory.