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Device ПДЗ-О
The ПДЗ-O device is designed to detect an electric arc in the cabinets of complete distribution devices, issue a control signal in relay protection and automation circuits, and indicate the damaged direction. To transmit the flash from the arc to the photosensitive element of the device, a separate fiber-optic DVO sensor with a fiber-optic cable is used. The device can be used both independently and together with microprocessor relay protection devices of the MRZS type or any other devices.
Parameters:
- Power supply voltage, DC or AC, frequency 50 Hz, 75...264 V
- Power consumption - not more than 5 W
- Number of arc protection channels (maximum number of ARC sensors used with the device) - 4
- Sensitivity adjustment range for each of the ARC sensors - 10...100% of the maximum, setting granularity - 10%
- Checking the integrity of each ARC sensor - once every 4 seconds
- Length of the optical fiber cable of the ARC sensor - not more than 10 m
- Number of outputs for tripping the circuit breaker - 4
- Number of electronic outputs for ARC tripping (DVE) - 1
- Operating mode of power outputs and electronic output - signaling (with memory) or pulsed (single pulse)
- Range of pulse duration setting in pulse mode - 0.200...1.000 s, setting granularity - 0.001 s
- Setting the delay of issuing the circuit breaker tripping command (for each output separately) - range - 0...1000 ms, setting granularity - 0.001 s
- Time from the moment of occurrence of the electric arc to issuing the ARC tripping command by the device on disconnecting power elements at zero time delay on power outputs and electronic output DVE - not more than 1 ms
- Discrete output for signaling the device's health and all connected ARC sensors "KWD" - 1
- Discrete input for blocking the operation of the arc protection - 1
- Operating mode of the discrete input - direct or inverted
- Dual-row LCD for displaying the channel number of ARC tripping in operating mode and the device menu in programming mode
- Indicator LEDs: "Network" - indication of power supply presence, "Alarm – 1, 2, 3, 4" - indication of ARC sensor tripping, "Sensors – 1, 2, 3, 4" - indication of the state of ARC sensors
- Buttons: Enter - entering programming mode and navigating the menu when configuring the device, Esc - resetting ARC tripping and navigating the menu when configuring the device, ▼ and ▲ - menu navigation and changing the set value when configuring the device.
- Memory of emergency trippings in case of power supply shutdown with restoring the state of discrete outputs and LED indicators after restoring the device power
- Setting a password to protect against unauthorized changes to settings (viewing values is not prohibited)
- Limit working conditions for device application: ambient air temperature - from minus 25 to 50°C, relative humidity - up to 90% at a temperature of 30°C, atmospheric pressure - from 70 to 106.7 kPa
- Device weight - not more than 1.2 kg
- Overall dimensions of the device - 168 x 124 x 95 mm