WITT Solutions GmbH
SMARTE Messtechnik für Gleichstrom – Spannung – Kabel – Isolation
Using robust analog and digital measurement technology, the driving voltages of DC railways are measured and directly evaluated.
The WB-TVM is typically as a voltage monitor for contact line voltage DC traction systems and for data acquisition to ssensitive point of the infrastructure used.
This is necessary, for example, if measurements have to be carried out before connecting the different parts of the S-Bahn or U-Bahn.
An electrical connection of the sections may only be made if all voltage values
Another area of
The WB TVM
can be used as an independent component or in combination with other WB components,
enables a reliable evaluation of the driving voltage t,
due to a special evaluation
requires no supply voltage up to 1000 V,
offers high flexibility in evaluation,
can store peak values
automatically activates the measurement.
The WB-TVM evaluates the measurement voltage when the minimum measurement voltage VDC is applied.
The specific firmware enables the WB-TVM to filter the driving voltage so that an exact evaluation is possible.
Depending on the stored threshold values
In combination with the components WB-BUS, WB-HS, the WB-TVM can also exchange the circuits, the ACTUAL values
| Supply voltage |
|
| humidity | 30%-70% non-condensing |
| Outside temperature range | -20 up to 50 °C |
| housing / design | T2 (1 TE = 18 mm) (W x H x D) 36mm x 99mm x 105mm |
| Modular housing | |
| Protection class IP 20 | |
| Mounted on 35 mm DIN rail according to EN 60715 | |
| Mains connection and inputs and outputs: | – screw terminals, |
| Min. Measuring Voltage VD | Rating VDC | Voltage proof VDC |
| 10 | 110 | 1000 |
| 80 | 400 | 1000 |
| 220 | 750 | 1800 |
| 220 | 1500 | 2000 |
| 220 | 3000 | 6000 |
Standard WB VDC
The nominal voltages are based on der tTypical energy supply of direct current railways.
| Without auxiliary voltage | 40- 300VDC | 200 – 750VDC | 200- 1500VDC | 200 – 3000VDC |
| With auxiliary voltage | 0 – 345VDC | 0-860VDC | 0-1725VDC | 0-3450VDC |
| max. Rated voltage VDC | 300 | 750 | 1500 | 3000 |
| Voltage strength VDC | 750 / 10sek | 2000 / 10sec | 3600 / 10sec | 6600 / 10sek |
| VDC test voltages | 1.5 kV | 6 kV | 9 kV | 12 kV |
| Measurement accuracy | see measurement channel variants | |||
We provide two variants of measurement channels
| Product type | withe line | silver line |
|---|---|---|
| Measuring channels | 2 | |
| Sampling Rate | up to 15kHz | up to 25kHz |
| Resolution | up to 8 bits | up to 16 bit |
| Measurement accuracy | 5% of max. value | 0.5% of max. value |
| number | 2 |
| Technology | Relay with 2 separate changers (NC/NO) |
| switching voltage | max. 250V |
| switching current | max. 8A |
| switching capacity | max. 2000WAC / 60W |
| Dielectric strength coil – contact | max. 4kVAC |
| Switching cycles at Imax | > 1,000,000 |
| Disconnect Voltage | 2000 VAAC / 60 VADC |
Possible variants depending on the range of functions or options
| LED | LED Color | Caption | Function |
| 1 | green | run | operability permanently ON |
| 2 | blue | Enable | Approval granted by higher authority |
| 3 | green | ON/ OFF | Sonicated On / OFF |
| 4 | red | Error | Functional malfunction of the system or sensors or equipment |
Im standardssystem is no control element vintended.
| Max. DC voltage threshold | Display threshold exceeded |
| Max. AC voltage threshold | Display threshold exceeded |
| Min. DC voltage threshold | Displayed below threshold |
| times event pending | Time(s) for how long a threshold must be present in order to be displayed |
| Monitored auxiliary voltage for external sensors | The sensors are connected to the device and supplied via it. The power consumption is monitored and conclusions are drawn about the functionality of the sensor. |
| Number and time of voltage overshoot and undershoot | Example: Only if an impulse of > 0.2 ms has occurred, this is counted and after 4 times a signal is sent |
| Any signal delay | higher-level systems only signal messages when an ACTUAL value is below or exceeded |
| Any signal pause / min. signal length | Ensuring transmission to third-party systems |
| Secure blocking of external switching commands | To ensure unintentional switching, e.g. Canat the firmware level, the bidirectional communication can not only be deactivated but blocked by the compilation, |
The following functions can be offered as an option. These may also require WBex components
| Test button | This optional button can be used to manually activate messages or applications 1) |
| Reset measured value | Using this option, max. or min. measured values |
| Release contact | The release signal is required if the WB component works autonomously and is to be activated or deactivated by a simple signal |
| LCD display | ACTUAL value DC ACTUAL value AC |
For security reasons, there was no on-site configuration option.
The thresholds can be set at the factory.
If you need several udifferent threshold values
Parameterization via SCADA Systems is possible if the system is connected to a WB-MC or WB-HS .
The functionality of the basic components can be extended by an internal extension OR by another WB component or WBex extension become.
| Product | Application examples |
| Release contact 24VDC, |
The functionality of the basic components can be extended by an internal extension OR by another WB component.
| Product | Application examples |
| Switching an actuator or signaling contacts, e.g. 220VAC | |
| SMART OK / NOK Status | |
| WB Component 2 Digital Power Outputs | Simple on-site extension of the component |
1)at least one channel of the digital Input extension needed
The following items are included in the scope of delivery:
| Product | Application examples |
| WB – Multi-Communication | WB component by means of which the WB component can be connected to e.g. SCADA |
| WB – Headstation | Any complex tasks can be implemented using these components. e.g. measurement data evaluation, graphic displays |
Datenblätter
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Datasheet
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Fiches techniques
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The following digital values
Possibilities are also listed depending on the components, configuration, installed options and system structure as well as the protocol used.
