WB-TVM Voltage Relays and Data Acquisition
Here you can find out more VertriebsanfrageMonitoring relay. Using robust analogue and digital measurement technology, the DC voltage is measured, analysed, signalled and transmitted to a data collector.
- Description
- Function
- General data
- Technical data
- Extensions
- Protocols and SCADA
- Contents
- communication
Description
WB-TVM Voltage Relay and Data Acquisition for DC Voltage
Voltage monitors for catenary voltage in DC railway systems, for data acquisition at critical points in the infrastructure
The WB-TVM is typically used as a voltage monitor for DC systems, such as catenary voltage and railway track voltage, or as a higher-level DC protection device in DC railway systems, and for data acquisition at sensitive points in the infrastructure. This is necessary, for example, when measurements need to be carried out before connecting the various sections of a suburban or underground railway.
An electrical connection between the sections may only be made if all voltage values fall within a specified range.
Another area of application is the indication of high voltages in safety zones, e.g. on a conductor rail in a metro system.
Function
Das WB-TVM
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kann als eigenständige Komponente oder im Verbund anderer WB- Komponenten genutzt werden,
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enables a reliable assessment of the driving stress t on the basis of specific analyses,
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requires no supply voltage up to 1000 V,
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offers a high degree of flexibility in data analysis,
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can store peak values locally and
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automatically activates the measurement.
The WB-TVM evaluates the measured voltage when the minimum measured voltage (VDC) is reached.
The specialised firmware enables the WB-TVM to filter the operating voltage, thereby allowing for a precise assessment.
Depending on the stored threshold values or optional functions, the measured values are evaluated and the outputs are activated.
When used in conjunction with the WB-BUS and WB-HS components, the WB-TVM can also exchange switching data, actual values and setpoint values with a SCADA system.
General data
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Supply voltage |
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Humidity |
30%–70%, non-condensing |
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Outdoor temperature range |
-20 to 50 °C |
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Housing / Design |
T2 (1 TE = 18 mm) (W x H x D) 36 mm x 99 mm x 105 mm |
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Side-by-side housing |
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Protection rating IP 20 |
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Mounting on a 35 mm DIN rail in accordance with EN 60715 |
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Mains connection and inputs and outputs: |
– Screw terminals, |
Technical data
Operation without auxiliary voltage up to 1000 VDC measurement voltage
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Min. measurement voltage VD |
VDC rating |
Voltage rating (VDC) |
|
10 |
110 |
1000 |
|
80 |
400 |
1000 |
|
220 |
750 |
1800 |
|
220 |
1500 |
2000 |
|
220 |
3000 |
6000 |
Standard WB-VDC
Analogue input channels
The rated voltages are based on the typical power supply for DC railways.
|
Without auxiliary voltage |
40- 300VDC |
200 – 750VDC |
200- 1500VDC |
200 – 3000VDC |
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With auxiliary voltage |
0 – 345VDC |
0-860VDC |
0-1725VDC |
0-3450VDC |
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Max. rated voltage VDC |
300 |
750 |
1500 |
3000 |
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Dielectric strength VDC |
750 / 10sec |
2000 / 10sec |
3600 / 10sec |
6600 / 10sec |
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Test voltages (VDC) |
1,5 kV |
6 kV |
9 kV |
12 kV |
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measurement accuracy |
See measurement channel variants |
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We offer two types of measurement channels:
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Product type |
withe line |
silver line |
|---|---|---|
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Measurement channels |
2 |
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Samplingrate |
up to 15kHz |
up to 25kHz |
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Resolution |
up to8 Bit |
up to 16 Bit |
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measurement accuracy |
5% from the maximum value |
0,5% from the maximum value |
Digital output channels
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Quantity |
2 |
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Technology |
Relay with 2 separate changeover contacts (NC/ NO) |
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Switching voltage |
max. 250 V |
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Switching current |
max. 8 A |
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Switching capacity |
max. 2000 WAC / 60 W |
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Dielectric strength between coil and contacts |
max. 4 kVAC |
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Switching cycles at Imax |
> 1.000.000 |
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Breakdown voltage |
2000 VAC / 60 VADC |
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Possible variants depending on the range of functions or options
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LED |
LED color |
Labelling |
Function |
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1 |
green |
run |
Operational status: Continuous ON |
|
2 |
blue |
Enable |
Approval by the maintenance department issued |
|
3 |
green |
ON/ OFF |
Echoed On / OFF |
|
4 |
red |
Error |
Malfunction of the system, sensors or equipment |
Operation
No control element is provided in the standard system.
Extensions
Functional enhancement
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Threshold value for maximum DC voltage |
Display: Threshold exceeded |
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Maximum AC voltage threshold |
Display: Threshold exceeded |
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Minimum DC voltage threshold |
Value below the displayed threshold |
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Times |
The time(s) for which a threshold value must remain active before it is displayed |
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Monitored auxiliary voltage for external sensors |
The sensors are connected to the device and powered by it. The current consumption is monitored, and conclusions are drawn regarding the sensor’s functionality. |
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Number and duration of overvoltage and undervoltage events |
>Example: Only when a pulse of < 0.2 ms has occurred more than three times is it counted, and a signal is sent after the fourth occurrence |
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Any signal delay |
Higher-level systems should only trigger a notification when an actual value falls below or exceeds a threshold |
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Arbitrary signal pause / minimum signal length |
Ensuring data transfer to third-party systems |
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Reliable blocking of external switching commands |
To prevent accidental switching caused, for example, by communication faults or external interference, bidirectional communication can not only be deactivated at the firmware level, but also blocked by the compiler. |
Operation
The following functions may be offered as optional extras. These may also require WBex components
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Test button |
Mittels dieser Optionalen Taste können Meldungen oder Applikationen Manuel aktiviert werden 1) |
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Reset reading |
This option can be used to save the maximum or minimum measured values 1) |
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Approve contact |
The enable signal is required when the WB component is operating autonomously and is to be activated or deactivated by a simple signal |
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Measurement LCD Display |
Actual value DC IST-Wert AC |
parameterisation
Aus Sicherheitsgründen wurde auf eine Konfigurationsmöglichkeit Vorort verzichtet.
The thresholds can be set at the factory.
If you require several different threshold values in your systems, you can use our CM1010 / VLD1010 service case. The service case allows you to store different parameter sets and software updates, which can then be loaded via an adapter.
Parameterisation via the SCADA system is possible if the system is connected to a WB-MC or WB-HS.
Input signals
The functionality of the core components can be extended either through an internal extension OR through an additional WB component or ‘WBex’ extension.
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Product |
Examples of use |
|
Enable contact 24 V DC, |
Output signals
The functionality of the base components can be extended either through an internal extension OR through an additional WB component.
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Product |
Examples of use |
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Switching an actuator or signal contacts, e.g. 220 V AC |
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SMART OK / NOK Status |
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WB Component 2: Digital Power Outputs |
Simple on-site extension of the component |
1) At least one channel of the digital input expansion module is required for this
Protocols and SCADA
|
Product |
Examples of use |
|
A WB component that can be used to connect the WB component to, for example, SCADA |
|
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WB – Headstation |
These components can be used to carry out any complex tasks, e.g. measurement data analysis, graphical displays |
Contents
- User manual
- Installation instructions
- unit of measurement
- Packaging
- Test report
communication
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