Overhead Line Fault Indicator

Accessories:
Ø transmitter charger adapter – 1 no.
Ø two core dcdb positive and negative connecting cable - 1 set
Ø transmitter earthing cable – 1 no.
Ø sensor probe small (15 sq mm) – 1 no.
Ø sensor probe big (50 sq mm) – 1 no.
Ø two core connecting cable to connect receiver to sensor probe - 1 set
Ø receiver unit charger – 1 no.
Ø instruction manual – 1 no.

Other models:
Ø digitrace dc 663m - dedicated kit connected to dcdb permanently
Ø digitrace dc 631px- fault location upto 100kΩ


Packaging as per international standards

Display
Ø outputs : printout in 4 formats, graphic lcd display & complete analysis data to laptop loaded
With tadma software
Ø type of signal transmission : pulse
Ø control : automatic mode and manual mode





Packaging as per international standards.

short circuit&earth fault indicator widely used in ABB/SIEMENS switchgears:
1. Short circuit alarming current: 100A to 1000A time delay 40ms
2. Earthing alarming current: 10A, 20A,30A,40A,60A±10% time delay 40ms
3. Temperature range : -25 to +70
4. Humidty range: â?¦95%
5. Earth lead length : 4m optional
6. Conduct optical fiber length 3.5m optional
7. Power supply: lithium battery 3.6V/2.45Ah
8. Auto-reset time : 7s,2hrs,4hrs,8hrs
9. Output relay : 125 V AC 1A, 30V DC 2A
10.Main controller dimension : 95*50*80mm
11.Cutting hole size : 91*44 mm
12.Protection class : Main Controller :IP40, Sensor:IP65

Features: small volume and convenient installation, probe fault indicator, 220v power supply.
Power consumption: less than 3w
Measurement range:-30~+110¡ã c
Accuracy: 1%
Display eee ntc sensor failure (short circuit or open circuit)
Power supply: 220v
Dimension: 64(l) x31(w)
Mounting hole dimension: 58.4(l) x 25.7(w) mm



Display eee ntc sensor failure (short circuit or open circuit)
Power supply: 220v
Dimension: 64(l) x31(w)
Mounting hole dimension: 58.4(l) x 25.7(w) mm

Technical characteristics:
Safe load indicator JL-3000 uses industrial grade 5.7 inch LCD screen;
 Full patch design, waterproof, dust-proof, anti-vibration, small size and easy to disassemble;
 The casing is made of high-pressure cast aluminum material, beautiful, and the protection level is strong;
 Large-scale digital, analog CMOS integrated circuits, low power consumption; strong anti-interference ability, high reliability;
 The system has automatic fault detection function, which can automatically determine the fault location;
 The host adopts the touch button, long service life and high reliability;
 The system uses the latest modular integrated chip. Software can adjust the gain, the hardware without potentiometer, to solve the drift problem caused by the temperature change of the potentiometer, thus ensuring the stability of the dataï¼?
 With password setting to prevent parameter wrong settingï¼?
 With sound and light alarm functionï¼?
 Automatic compensation for sensors, 'temperature drift' and 'null drift'ï¼?
 With black box function, convenient to inquire any time.

1.Temperature controller adopts japans and italian (p.I.D) programmed sensor
Internal storage, which calculates automatically.
Its precision is controlled within +1¡æ and it can save above 35% power.
2. Two sets of tubular electric heating element can use one or both.
3. Short heating of cooling time and stable temperature.
4. Electric heating can is made of stainless steel.
5. Perfect security protection and fault indication system
6.Use the advanced unit from foreign countries with long life.
7. Cad system design that is easier to handle and maintain.

Long;1100
Wide;600
High;600
Weight;110kg
Packing; standard wooden case

1.Temperature controller adopts Japans and Italian (P.I.D) programmed sensor
internal storage, which calculates automatically.
Its precision is controlled within +1¡æ and it can save above 35% power.
2. Two sets of tubular electric heating element can use one or both.
3. Short heating of cooling time and stable temperature.
4. Electric heating can is made of stainless steel.
5. Perfect security protection and fault indication system
6.Use the advanced unit from foreign countries with long life.
7. CAD system design that is easier to handle and maintain.

LONG;1100
WIDE;600
HIGH;600
WEIGHT;110KG
PACKING; STANDARD WOODEN CASE

PTC thermistors current protector, also called PTC thermistor resettable fuses, protect load against over-current, overload, short circuit. No need for replacement, resume protective function after a short cooling-down time.
Ceramic PTC (positive temperature coefficient) thermistors are used instead of conventional fuses to protect load, such as motors, transformers, or electronic circuit, against overcurrent for circuit protection. PTC thermistor protector not only respond to inadmissibly high currents but also if a preset temperature limit is exceeded. PTC thermistor over-current protector limits the power dissipation of the whole circuit by increasing their resistance and thus reducing the current to a harmless residual value. In contrast to conventional fuses, PTC thermistor resettable fuses do not have to be replaced after elimination of the fault but resume their protective function immediately after a short cooling-down time.
PTC Thermistor Over-current Protector Application

It applies in the over-current overload and short circuit protection of transformers, battery charger, switches, switch power supply, adaptor, meter, instrumentation, apparatus, electronic coils, control panels, air conditioner, automotive electron, etc.

Operating Principle of PTC Thermistor for Overload Over-current Protection

The operating principle is as indicated in the following. When a circuit is in the normal status, the current through PTC is lower than the rated current and PTC thermistor protector is in the normal state with small resistance value, which will not affect the normal operation of the protected circuit. In case of some fault in the circuit and the current is greater than the rated current, the PTC thermistor protector will become hot quickly and present a high resistance state, which sets the circuit relatively "off" to protect the circuit from damage. After the fault is removed, PTC thermistor protector will automatically restore its low resistance state and the circuit will resume normal operation.

Normally, when PTC thermistor is used as an overcurrent protection component, it is preferred to select maximum operating current, maximum operating voltage and proper specifications. Furthermore such factors should be taken into consideration as the dimensions of the components, rated zero-power resistance, operating temperature range, etc.