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Коммуникационные сети - Приборы для кабелей связи Кабельные мосты KMK 8
KMK 8
Серия: SebaKMT
запросить ценуState of the art AC- and DC- Fault location bridge
Properties
The Cable fault locator KMK 8 is a small, hand held instrument for the qualitative evaluation, fault
location and qualification of existing telecommunication cables.
The KMK 8 calculates from the pre- programmed or the user specific entered cable parameters and the entered or measured cable temperature the cable lengths as well as the distance to the fault.
The KMK 8 consists of the measuring modules:
- The Reflectometer (TDR) for reflexion measurements
- The active measuring bridge for high precision resistance and capacitance measurements as well as DC and AC location of faults on cables with low AC interference voltages levels. In connection with a active slave at the far end of the cable the active bridge allows fault location with the Graaf method.
- A passive Wheatstone bridge for resistance and capacitance measurements as well as DC and AC location of faults on cables with high AC interference voltages levels
- The Test Systems for Pre-measurement, Quick test and Quality testing
- The Voltage measuring module for the measurement of interference voltages in cable systems.
- The warning and information system to inform the user continuously about disturbances like, for example interference voltages
- The remote control for the operation of the electronic far end loop control switch
Due to the graphical display, the easily operated menu and extensive help functions, the handling and operation of the KMK 8 is very easy.
The displayed test results can be stored in the internal memory, and transferred via the USB interfaces to an USB Stick or directly to a PC.
The KMK 8 is supplied by an integrated rechargeable NiMH battery. The recharging from 12 V DC Car Supply or 230 V AC Charger is controlled by a processor controlled charging system.
Four instruments in one
- Active Bridgefor accurate location of faults on cables with low interference voltages level
- Passive Wheatstone Bridgefor location of faults on cables with high interference voltages level
- Graaf Fault Locatorfor accurate fault location on totally water-soaked cables with high and intermittent interference voltages.
- Reflectometer (TDR) for the location of low impedance faults and cross talk between pairs
The hand-held Cable fault locator KMK 8 is used to test the quality of telecom cables and to locate cable faults.
The combined instrument provides several tools for the accurate location of DC and AC faults:
Resistance Measurements
- Loop resistance
- Resistance difference
- Insulation resistance
Capacitance Measurements
- Cable capacitance
- Capacitive balance
DC Fault Location Methods
- Murray
- 3 Point
- Küpfmüller
- Repeated Küpfmüller
AC Fault Location Methods
- Interruption
- Repeated Küpfmüller
Graaf Fault Location Method
- End to end Master-Slave measurement
- Fault location on completely wet cables
TDR Measurements
- Single pair
- Double Pair Measurements
- XTALK
- Comparison to Memory
AC-DC Voltage measurements
Cable temperature measurement
USB Ports for Result Transfer
- USB B device-port for direct PC connection
- USB A host-port for USB stick (Indirect transfer)
The indirect data transfer is advantageous for users, which do not have administrative rights to install a driver to their PC.
Features
Easiest Operation
- Easy to use menu system
- Many-sided topic oriented help system
- Large Graphic Display with Backlight
- Pre-defined, automatic test sequences:
Automatic Test Sequences
- Cable State Survey to find the best test method
- Quick Test of main parameters
- Quality Test Sequence
Remote Controllable Far end Devices
KMK 8 has a function for the remote control of a far end loop closing device. This feature allows just one person to perform measurements, which require the operation of the far end loop (e.g Küpfmüller).
- KLC 8 loop closing device to open or close the far end of the tested cable
- KMK 80S slave unit to perform synchronous end to end Graaf measurements
Large MemoryThe test results can be stored in the internal memory and transferred to a PC.It is possible to view the results directly in the display and to print them from there. Alternatively the data can be viewed as table and transferred to the PC as PDF file. The results can also be converted into Excel format.
TDR MEASUREMENTS
Single pair measurement
L1 / L2
L1 / L2 Long time
Double pair measurement
L1 & L2
L1 - L2
XTALK
L1 & Memory
L1 - Memory
AKTIVE BRIDGE
Resistance measurements
Loop resistance
Resistance difference
Insulation resistance
Capacitance measurement
Cable capacity
Capacitive balance measurment
DC Fault location
Murray method
Küpfmüller method
Repeated Küpfmüller method
AC Fault location
Interruption measurement
Repeated Küpfmüller method
Interference voltage
PASSIVE BRIDGE
Resistance measurements
Loop resistance
Resistance difference
Insulation resistance
DC Fault location
Murray method
3 Point method
Küpfmüller methode
AC Fault location
Küpfmüller
Capacitive balance
Graaf Fault Location Method
End to end Master-Slave measurement
Fault location on completely wet cables
Технические характеристики:
| TDR | |
| Measuring Ranges | |
| For non loaded cable (at V/2=100) | 16 m … 32 km |
| Evaluation of Results | |
| With Cursor and Marker | In meters |
| Refreshing of waveform | ~4/sec |
| Zoom | Maximum 16 |
| Accuracy | |
| Fault location | 0,2 % of range |
| Resolution | 0,01 m |
| Propagation Velocity | |
| For non loaded cables | |
| V/2 | 45 … 149 m/?s |
| NVP | 30 … 99 % |
| For loaded cables | |
| V/2 | 1,2 … 30 m/?s |
| NVP | 0,8 … 20 % |
| Pulse Characteristics | |
| Widths for non loaded cable | 4 ns … 6 ?s |
| Widths for loaded cable | 330 ?s |
| Amplitude | 1.3 … 12 Vpp into 120 ? |
| Line Connection | |
| Impedance | 120 ? balanced |
| Balance control | 50 … 270 ? |
| Gain Control | |
| Range | 0 … 90 dB |
| Steps | 6 dB/Step |
| Distance Dependent Amplitude Correction | |
| Number of steps | 10 |
| Active Bridge | |
| Voltage | |
| DC voltage | 0 … 400 V |
| AC voltage | 0 … 250 Veff |
| Accuracy | ±3% ±1 V |
| Frequency range | 15 … 300 Hz |
| Input resistance | 2 M? |
| Loop Resistance | |
| Measuring range | 1 ? … 10 k? |
| Accuracy | ±0,3% ±0,1 ? |
| Resistance Difference | |
| Loop resistance range | 10 ? … 5000 ? |
| Accuracy | ±0,2% des Rs ±0,2 ? |
| Insulation Resistance | |
| Measuring range | 10 k? … 300 M? |
| Measuring voltage | 100 V |
| Accuracy | ±2 … 5% ±1 k? |
| Capacitance | |
| Measuring range | 10 nF … 2 (10) ?F |
| Measuring voltage | 11 Hz, 100 Vp |
| Accuracy | ±2% ±0,2 nF |
| Capacitive Balance | |
| Measuring range | 10 nF … 2000 nF |
| Measuring voltage | 11 Hz, 100 V |
| Accuracy of Lx/L value | ±0,2 % |
| DC Fault Location | |
| Test Methods | Murray, Küpfmüller, 3 Point |
| Loop resistance range | 1 ? … 10 k? |
| Fault resistance range | up 100 M? |
| Measuring voltage | 100 V |
| Accuracy | (Rs=2 k?, Lx/L=0,1 … 1) |
| Fault resistance: | |
| <1 M? | ± 0,2 % |
| 1 M? … 5 M? | ± 0,3 % |
| 5 M? … 25 M? | ±0,5 % |
| 25 M? … 100 M? | ±2 % |
| AC Fault Location Interruption | |
| Range | up to 20 km (Depends on cable typ) |
| Accuracy | ±2% ±0,2 nF |
| PASSIVE BRIDGE | |
| Loop Resistance | |
| Measuring range | 1 ? … 10 k? |
| Accuracy | ±0,3 % ±0,3 ? |
| Insulation Resistance | |
| Measuring modes | Quick measurement, Quality measurement |
| Measuring ranges | |
| Quick measurement | 10 k? … 300 M? |
| Quality measurement | bis 10 G? |
| Measuring voltage | 100 V |
| Accuracy: | |
| 10 k? … 50 M? | 5 % ± 1 k? |
| 50 M? … 100 M? | 10 % |
| 100 M? … 5000 M? | 20 % |
| 5000 M? … 10000 M? | 30 % |
| Resistance Difference | |
| Loop resistance range | 1 ? … 5000 ? |
| Accuracy | ±0,2 % of Rs ±0,2 ? |
| Resolution of Lx/L (Mk)-value | |
| In range ?R <10% | 1/10000 |
| In range ?R >10% | 1/1000 |
| DC Fault Location | |
| Test methods | Murray, Küpfmüller, 3 Point |
| Loop resistance range | 1 ? … 10 k? |
| Fault resistance range | up to 100 M? |
| Measuring voltage | 100 V |
| Accuracy | (Rs=2 k?, Lx/L=0,1… 1) |
| Fault resistance: | |
| < 1M? | 0,2 % |
| 1 M? … 5 M? | 0,3 % |
| 5 M? … 25 M? | 0,5 % |
| 25 M? … 100 M? | 2 % |
| Resolution of Lx/L (Mk) value | 1/1000 |
| AC Fault Location Küpfmüller Method | |
| Loop resistance range | 1 ? … 10 k? |
| Fault resistance range. | up to 25 M? |
| Measuring voltage | 11 Hz, 100 V |
| Accuracy | (Rs=2 k?, Lx/L=0,1 … 1) |
| Fault resistance: | |
| <1 M? | ±0,3 % |
| 1 M? … 5 M? | ±0,5 % |
| 5 M? … 25 M? | ±1,0 % |
| M-Wert Auflösung | 1/1000 |
| AC Capacitive Balance | |
| Measuring range | 10 nF … 2000 nF |
| Accuracy of Lx/L value | ±0,2 % |
| Measuring voltage | 11 Hz, 100 V |
| Resolution of Lx/L value | |
| In range Lx/L=0.9 … 1.1 | 1/10000 |
| In range Lx/L<0,9 oder Lx/L>1,1 | 1/1000 |
| Fault Location Graaf Method | |
| Loop resistance range | 10 ? … 10 k? |
| DC current range | 5?A to 1A |
| Accuracy (I>10 ?A) | ±0,3% … ±2 % |
| PRE MEASUREMENTS | |
| Interference Voltage | |
| DC voltage | up to 400 V |
| AC voltage | up to 250 Veff |
| Loop Resistance | |
| Measuring range | 1 ? … 10 k? |
| Insulation Resistance | |
| Measuring mode | Repeated measurement |
| Measuring time | ~ 3 sec |
| DC Current | |
| Measuring range | 10 uA … 1 A |
| Temperature (with Pt 1000 temperature probe) | |
| Measuring range | -20 C … + 60 C |
| Automatic quick test | |
| Interference Voltage | |
| Measuring range | up to 400 V DC, 250 V AC |
| Test results | Vab, VaE and VbE |
| Insulation | |
| Measuring range | 10 k? … 300 M? |
| Measuring time | ~3 x 15 sec. |
| Capacitance | 10 … 2000 nF |
| Capacitive Balance | |
| Measuring voltage | 11 Hz, 100 V |
| Test results | Unbalance % |
| Automatic quality test | |
| Insulation | 10 k? … 10 000 M? |
| Measuring time | ~3 x 30 sec. |
| Capacitance | 10 … 2000 nF |
| Capacitive Balance | |
| Test results | Unbalance % |
| Resolution | 1/1000 |
| Loop Resistance | |
| Measuring range | 1 ? … 10 k? |
| Accuracy | ±0,3% ±0,1 ? |
| Resistance Difference | |
| Loop resistance range | 10 ? … 5 k? |
| Resolution | 1/1000 |
| General specifi cations | |
| Power Supply | Internal rechargeable NiMH battery pack |
| Operation time | approx. 8 hours (Without backlight) |
| Charging (without taking the battery pack out) | From 100 … 240 V mains with mains adapter. From 12 V car battery with car adapter |
| Charging time | less than 3 hours (Fast charging mode) |
| Display | 320 x 240 dot graphic LCD |
| Connectors | |
| Connector for mains adapter | 2.1/5.5mm coax |
| L1 and L2 line connectors | 4 mm banana sockets |
| Ground connector | 4 mm banana sockets |
| USB A | USB 1.1 host port for USB-Stick |
| USB B | USB 1.1 device port to connect PC |
| Over Voltage Protection (bei Ri >5 k?) | |
| Between a and b or ground | 500 V DC, 350 V AC |
| Longitudinal voltage | 60 V AC |
| Ambient temperature ranges | |
| Reference | 23 ±5 °C Rel. humidity 45% … 75%* |
| Normal operation | 0 … +40 °C Rel. humidity 30% … 75% *(<25 g/m3) |
| Limits of operation | -5 … +45 °C Rel. humidity 5% … 95% *(< 29 g/m3) |
| Storage and transport | -40 … +70 °C Rel. humidity 95 % at +45 °C *(<35 g/m3) |
| For test results | 50 |
| For cable parameter | 50 |
| Dimensions | 224 x 160 x 75 mm |
| Weight (Including battery pack) | ca. 1,8 kg |
| * Without condensation |
