16 years on Allbiz
- Country of manufactureMoldova
- The control unit of isolation of UKI is intended for automatic control of resistance of isolation of poles of network of the constant or straightened operational current by voltage of 220 V concerning "earth" and delivery of an output signal at decrease in resistance of isolation is lower than admissible value.
- In the device digital microprocessor control is used.
- The result of control turns out by calculation of the general resistance of the chain representing parallel connection of resistance of isolation of a positive and negative pole of network concerning "earth".
- Assessment of level of isolation is carried out discretely, five subranges with the following boundary values:
- 100 — ∞ kOhm.
- 50 — 100 kOhm;
- 25 — 50 kOhm;
- 10 — 25 kOhm;
- 0 — 10 kOhm.
- Accuracy of indication of borders of subranges is not lower ± than 20%.
- The device reacts both on asymmetrical, and to symmetric decrease in resistance of isolation of poles in network. At asymmetrical decrease in resistance of isolation of poles the device provides indication of a pole with the reduced isolation. At symmetric decrease in resistance of isolation of poles the device provides the blinking indication "+", "-".
- The device is efficient at the total capacity of poles to 50 mkf and in the presence of a hindrance to 80 V 50 Hz.
- For the purpose of an exception of influence of transition processes at turning on of the device on result of control the delay 5 – 10 sec. after giving of supply voltage is provided in the device.
- In case the general resistance of isolation is less than 20 kOhm, the output relay closing the contact used in the scheme of the alarm system of a power facility works. Operation resistance setting accuracy ≤ ±10%.
- Device reaction time on short circuit of contacts 5 ¸ 20 sec.
- Power supply of the device is carried out from controlled network of 220 V of a direct current. Tolerances of the supply voltage of +10%, - 20%.
- Power consumption ≤ 25 W.
- The device is manufactured in climatic modifications of UHL and O of category of placement 4 in accordance with GOST 15150.
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The control unit of isolation of UKI for chains of the constant and straightened current voltage of 220 V