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SensorTemperature Humidity SensorFault IndicatorElectric Fault Indicator System
Greno (Xiamen) Switchgear Co., Ltd.
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Product Description User manual of CSM cable temperature and fault monitoring instrument1. OverviewCable temperature and fault monitoring instrument is a real-time monitoring device, installed in the ring switch cabinet, the cable branch box and distribution box, which is used to indicate the short circuit and grounding fault of the corresponding cable section and the real time temperature. When circuit faults happen, electricians can quickly identify the fault section and find out the fault point with the help of the alarm instruction of the indicator. Through the screen, the fault area and the specific location are displayed, and the inspector can quickly determine the fault section and find out the fault point. It provides the best way to solve the trouble finding problem. It is of great significance to improve work efficiency, shorten power outage time, restore power supply quickly, improve power supply reliability and economic efficiency.2. Functional characteristicsReal-time temperature monitoringThe electronic CT detects the temperature of the cable and transmits the real-time temperature to the indicator through the optical fiber.Short-circuit fault alarmWhen the line current reaches or exceeds the preset short-circuit current value, the electronic CT sends an alarm signal to the indicator through the optical fiber. After receiving the signal, short-circuit fault alarm indicator of the corresponding phase flashes and backlights of the screen red flash as well.Grounding fault alarm When the circuit current reaches or exceeds the preset grounding fault value, the electronic CT sends an alarm signal to the indicator through the optical fiber. After receiving the signal, ground fault alarm indicator flashes and backlights of the screen red flash as well.Temperature alarm indication When the line temperature reaches or exceeds the preset grounding fault value, the electronic CT sends an alarm signal to the indicator through the optical fiber. After receiving the signal, temperature alarm indicator flashes and backlights of the screen red flash as well.Intelligent short-circuit fault judgmentWhen the circuit current suddenly increases by a certain ratio and the current is instantaneously declines to zero, it is defined as a short-circuit fault.Power supplyElectronic CT: self-sustaining (I ≥5A) and supply by the super-capacitor(I <5A).Indicator: External power supply: DC5~18V;Replaceable battery: there is real-time display of the battery voltage on the screen, when the low battery voltage alarms, the battery needs to be replaced.There is micro power consumption design, quiescent current is 50uA when the backlight off and it is 1.8mA when the backlight on.Auto resetIf there is no manual reset after the indicator alarms, the indicator can be automatically reset after the set time.When the circuit current returns to normal after a fault, the indicator can be automatically reset.The above two automatic reset modes can be set one or both of them.Manual resetWhen the indicator alarms, it can be reset by pressing the "Reset/Test" button for 5s.the indicator.Electronic CT communicationWhen there is no fault, the current and temperature data are updated every second; when there is a fault, the data will be sent immediately.Automatic detectionwhen there is no data uploaded to the indicator within 5 seconds of the electronic CT, the current and temperature of the corresponding phase will be displayed as "―――".3. Installation diagram 4. Operation methodBack light on: Press the button of "Reset Test" on the indicator, then release the button, the backlight will turn on, the backlight will automatically turn off after 10 seconds. The time of the backlight on is settable.Alarm reset: When the circuit fault happens, the indicator will generate an alarm signal. After the fault is completed, the alarm should be cleared. The alarm can be cancelled by long pressing (5s) the "Reset/Test" button on the indicator panel of the indicator. If there is no manual reset, the indicator can be automatically reset after the set time (2, 4, 8, 24 hours) or after the circuit returns to normal. (Automatic reset mode and time can be set)Replaceable battery: the indicator uses a piece of ER14505 lithium battery. When the indicator displays low voltage alarm indication, you can open the battery panel to replace the battery.5. Installation5.1 Indicator installation:Indicator size: 96mm(width) × 49mm(height) × 80mm(depth) Hole size: 92.5+0.6mm(width) × 45+0.6mm(height) 5.2 Short-circuit electronic CT installation:The short-circuit electronic CT must be installed on the single-phase branch of the cable. It can be directly mounted on the cable detected and fastened with a cable tie to prevent slippage and fall off. Appearance (see the left figure below).5.3 Grounding electronic CT installation:When installing the grounded electronic CT, pay attention to surround the three wires of the cable. The grounding wire of the cable must pass back through the electronic CT and fasten it with a cable tie to prevent sliding and falling off. 5.4 Connection:The sensor and the indicator are connected by optical fiber. When installing, first remove the protective cap on one end of the fiber. The fiber hole on the back of the indicator is like yellow mark to the L1, green mark to the L2, red mark to the L3, black mark to the L4. Tighten the threaded cap so that the fiber cannot be pulled out. Then remove the protective cap on the other end of the fiber, insert the yellow, green, and red fibers into the threaded holes, insert the black fiber into the grounding sensor, and tighten the threaded cap. 6. Technical parametersItemsParametersShort circuit fault current alarm1A ~ 10000A, error ± 3% (customized)Ground fault current alarm4A ~ 120A, error ± 3% (customized)Cable temperature failure alarm-40 °C ~ +120 °C, error ± 3% (customized)Cable real-time temperature measurement range-40 ° C ~ +120 ° C error ± 0.5 ° CWorking powerER14505 industrial grade lithium battery Indicator 3.6V, short circuit current sensor 3V; external power supply DC 5 ~ 28V, current <5mA.Machine standby current consumption≤50μAAutomatic reset timecan be set (default 24 hours)Protection levelIndicator: IP40; electronic CT: IP65Indicator working environment-40 ° C ~ +75 ° C7. Equipment list:Indicator: 1pcsShort circuited electronic CT: 3pcsGround electronic CT: 1pcsInstallation instructionsShort circuited transmission fiber: 3pcs, customized;Grounding transmission fiber: 1pcs, customized.8. Ordering InformationPlease provide the following parameters:The starting value of the short-circuit alarm current;Grounding alarm current startup value;Automatic reset time;Length of wire (optical fiber) Upper limit of temperature.
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