Dranetz 626A

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The Dranetz Series 626 universal disturbance analyzer, with its versatile system of a portable mainframe and a series of interchangeable, plug-in monitoring modules, together with standalone remote monitors, is capable of monitoring all environment disturbances in computer installations, industrial control systems, telecommunications equipment, and medical instrumentation. The unique distributed processing system architecture of the Series 626, including its ability to fully communicate with external decices, permits the user to configure the exact analysis system required.

Each plug-in module is an analysis system in its own right - sometimes under individual microprocessor control. Each module is programmed and operated independently of the others, and may be added or deleted independently of the others. A plug-in may be located in any available mainframe slot—up to a total of five plug-in modules per mainframe—and will identify itself to the mainframe and the operator, indicating its location and setup procedure. All plug-ins are linked to the real-time clock of the mainframe for easy correlation of disturbance events using a common timebase.

• Series 626 mainframe: Because of the modular capability of the Series 626 analyzer, it can be configured, and reconfigured, to meet the requirements of many applications. The mainframe houses up to five plug-in modules and provides all necessary supply voltages and operating controls. The mainframe CPU identifies the type of module installed in each slot and controls plug-in operation. An internal, rechargable battery provides full operation in the event of a power failure for 10 to 40 minutes and maintains the clock of the mainframe and memories for several months without AC power. The mainframe contains an integral thermal printer for disturbance data recording, and an RS-232C communications port for data output and remote programmability
• AC voltage monitors: For detailed, accurate, and comprehensive analysis of AC power line disturbances. All modules are 2-wire differential voltage input types, with impedance of 40 MΩ and 40 pF
  • 626-PA-6001: Monitor and record impulses, sags, surges, undervoltages, overvoltages, and frequency variations on a single channel of AC voltage. Options record impluse direction and either impulse duration or strength. Range is 50-600 Vac, 45-65 Hz. Duration range is 1-2000 µs. Line frequency is 45-65 Hz with resolution of 0.1 Hz
  • 626-PA-6003: Monitor and record impulses, sags and surges, undervoltages, and overvoltages on three channels of AC voltage. Monitors and records frequency variations on channel A only. Impulse duration measurement included as standard. Range is 50-600 Vac, 45-65 Hz. Duration range is 1-2000 µs. Line frequency is 45-65 Hz with resolution of 0.1 Hz
  • 626-PA-6006: Monitor and record impulses, surges, and overvoltages between neutral and ground on an AC power system. Measurement ranges and functions optimized for neutral-to-ground monitoring, including common mode transients. Options record impulse directions and duration or strength. Range is 2-50 Vac, 45-65 Hz. Duration range is 1-2000 µs
  • 626-PA-6009: Monitor and record impulses, sags and surges, undervoltages, and overvoltages on three channels of AC voltage. Monitor and record frequency variations on channel A only. Impulse duration measurement included as standard. Range is 50-600 Vac, 370-450 Hz. Duration range is 1-100 µs. Line frequency is 370-450 Hz with resolution of 0.1 Hz
• DC voltage monitors: For monitoring and recording DC voltage disturbances. All modules are 2-wire differential voltage input types
  • 626-PA-6002A: Monitor and record impulses, sags and surges, under and over voltages on a single dc channel. Options record impulse duration or impulse strength. Range is 0.5-80 Vdc. Impedance 10 MΩ with 500 pF. DC voltage accuracy is ±1% rdg ±0.5% fs
  • 626-PA-6002C: Monitor and record impulses, sags and surges, under and over voltages on a single dc channel. Options record impulse duration or impulse strength. Range is 25-600 Vdc. Impedance 40 MΩ with 40 pF. DC voltage accuracy is ±1% rdg ±0.5% fs
  • 626-PA-6015: Precisely monitor and record variations in up to three independent dc channels. Programmable scale factors and engineering units provide convenient monitoring of transducer outputs. Range is 0-10.23 V each of three channels. Impedance >10 MΩ. DC voltage accuracy is ±2% rdg ±0.3% fs
• Other 626 plug-ins
  • 626-PA-6005: AC current monitor module for monitoring and recording impulses, sags, surges, and high and low currents on a single channel of AC current
  • 626-PA-6007: Eight channel event sequence module for monitoring and recording the state and time of change of up to eight event inputs
  • 626-PA-6008: Temperature and humidity module for monitoring and recording variations in one temperature channel and one humidity channel, and accumulating times of over and under limit conditions
  • 626-PA-6011: Eight channel event time accumulator module for monitoring and recording the elapsed on/off times per day, state, and time of change of up to eight event inputs
  • 626-PA-6012A: Communications module for accepting and storing data from RS-232C port of the Series 626 mainframe for later transmission by a built-in auto-answer/auto-dial modem
  • 626-PA-6013: Mass storage module for accepting and storing data from RS-232C port of the Series 626 mainframe for later analysis, printing, or transmission by computer or external modem
  • 626-PA-6014: Eight-point temperature module for monitoring and recording variations in eight temperature channels, each with individual high and low limits and sensitivities
  • 626-PA-6018: Impulse energy analyzer module for monitoring and recording peak voltage and current, impulse energy, duration, and direction on a single AC power or ground line
  • 626-PA-6020: Broadband RF monitor module for monitoring and recording peak electric field strengths, CW, or burst above user-selected thresholds
• Remote monitoring units: Remote monitor units (RMU) extend the basic power line disturbance analysis of the Series 626 to multiple unattended sites, remote or within a local network. RMUs record power line sags, surges, high and low voltages, impulses, and voltage peaks occurring between neutral and ground
  • 626-RMU-1: Single phase power line monitor
  • 626-RMU-3A: Three phase line monitor, either line to neutral or line to line, as well as the ability to monitor one DC voltage channel for high and low voltages and impulses
  • 626-RMU-36: Each RMU relies on the Series 626 mainframe, equipped with this remote interface adapter. Once programmed, as many RMUs as required can be installed at various sites to monitor and record power line disturbances independent of the Series 626 mainframe. After data collection, each RMU can again be connected to the mainframe for data printout