WITT Solutions GmbH

SMARTE Messtechnik für Gleichstrom – Spannung – Kabel – Isolation

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TVM

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The analogue voltage monitoring relay TVM monitors the traction voltage of DC tracks using robust analogue measurement technology. It works without auxiliary voltage.

SKU: witt-tvm Category: Tags: , , , Brand:

Description

The TVM (Traction drive Voltage Monitoring) is generally used as a voltage monitor for the contact wire voltage in DC railway systems. This is necessary, for example, if measurements have to be carried out before the individual sections of a suburban or underground railway are interconnected.
The sections may only be electrically connected if all voltage values are within a certain window.
In addition, the TVM can indicate high voltages in safety areas, e.g. a conductor rail of an underground.

Additional information

DC System voltage (UA)

200VDC, Witt, Witt, Witt, Witt
Auxiliary voltage (1)

No auxiliary voltage
Meldekontakte

Common 2 x
Dielectric Strength

Customer request, up to 1500VDC, up to 2000VDC

General data

The TVM is a voltage monitor based on analog technology and therefore suitable for highest security requirements. With its specific signal filter, the device ensures that even the impulsive driving voltage of a direct current railway is evaluated correctly.

As soon as the predefined voltage values ​​are reached, the measuring unit begins its activity and shows when threshold values ​​are exceeded or fallen below with ppotential-free changeover switches. It needs no auxiliary voltage as it is directly connected to the catenary or theie supply units.

A VDC

Rating VDC min.

Rating VDC to

switching delay

Pulse break

10

110

600

max 5sek

about 3 seconds

80

400

800

Max 5sek

ca.3sek

Explanation of the table:

  • VDC: From This voltage allows the system to perform a correct measurement

  • Rating: Rating areas

  • Switching delay: Duration in ms of the pending signal BEFORE a message is generated

  • Pulse pause: Time in ms until the next signal display

General data

Supply voltage

from catenary

Power consumption

switched: 1000V max. 7mA

humidity

0 up to 100%, non-condensing

Outside temperature range

-20 up to 50 °C

Housing

Protection class IP 20

Housing for 35mm DIN rail

Dimensions in mm:
W 55 x H 78 x D112

Mains connection and inputs and outputs:

– screw terminals,
– Stripping length 9to10 mm
Note: For connecting potential-free contacts to
the actuator inputs are twisted pair wires
wires to use.
The following conductor cross-sections are permitted:
– solid: 0.5 to 2.5 mm2
– Finely stranded with pin cable lug, gas-tight crimped: 0.5to 2.5 mm²
– Finely stranded, with ferrule: 0.5 to 1.5 mm2
– Finely stranded, untreated: 1.0 or 1.5 mm²

weight

No entry

Technical data

Input channels analog (measurement channels)

The typical applications are driving voltages with the following rated voltage:

Nennspannung (Fahrspannung) VDC

300

750

750

Tension resistance (U max) to

750

1000

1200

Entry Resistance

& gt; 100 kOhm

& gt; 100 kOhm

& gt; 100 kOhm

  • Response time: DC ca. 20 ms; AC ca. 500 ms

  • Repetition accuracy: ≤ 0.2% of the final value

  • Number of measuring channels: 1

Ausgangskanäle Digital

Anzahl

2

Technology

Relay with 2 separate Wechsler (NC / NO)

Switching voltage

max. 250 V

Schaltstrom

max. 8 A

Switching

max. 2000 WAC / 60 W

Tension Coil – Contact

max. 5000 VAC

Switch games at Imax

& gt; 1,000,000

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Possible variants in dependence on the scope of function resp. Options

LED1

grün

ON / OFF

Sound On / OFF

Extensions

No extensions possible.

You might find the extensions you need in the digital version of this product: WB- TVM.

Scope of delivery

The following items are included in the scope of delivery:

  • Instruction manual
  • Installation Guide
  • Unit of measurement
  • Packaging

Protocols and SCADA

  • Carries out via potential-free contacts
  • Data transmission not possible

Documents

Datenblätter

Derzeit keine Dokumente vorhanden

Datasheet

Currently no documents available

Fiches techniques
Aucun document disponible pour le moment

Digital values

The device is completely analogue and therefore no digital values are available.

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