Overview

The ABB 23WT22 Voice Frequency Telegraphy Device is a high-performance terminal designed for reliable supervisory control and data transmission over high-voltage power lines ranging from 110 to 500 kV. This compact, Swedish-engineered device operates over a wide frequency range of 30–500 kHz, offering flexibility in channel spacing and modulation options for various telecommunication needs.

Functional Highlights

This Voice Frequency Telegraphy device supports multiple shift ranges (±30/±60/±120 Hz) and provides configurable modulation options including Frequency Shift Keying (FSK) and Amplitude Modulation (AM). It accommodates data rates from 50 to 600 baud, making it adaptable to different network requirements.

The 23WT22 offers robust performance with a low power consumption of less than 15 W, and it operates efficiently in extreme temperatures from -20°C to +65°C. It includes 1–4 independent telegraphy channels with safe carrier coupling through Capacitor Couplers and Line Traps, ensuring exceptional isolation with a 10 kV rating between field and logic circuits.

Moreover, the device features adjustable attenuation compensation (0–40 dB) and a -30 dBm operating threshold, allowing reliable signal transmission even over long distances. It supports multiple interface options, including balanced audio (600Ω) and dry contact control signals (24–220V DC), making it ideal for teleprotection and SCADA applications.

Technical Data

• Model Number: 23WT22
• Module Type: Voice Frequency Telegraphy Device
• Manufacturer: ABB
• Condition: Brand New
• Product Range: ABB
• Weight: 0.9 kg
• Dimensions: 19 x 12 x 13.5 cm
• HS CODE: 8537101190
• System Type: DCS
• Status: Active
• Minimum Order Quantity: 1
• Product Origin: Sweden
• Communication Service: Ethernet router

Typical Applications

The ABB 23WT22 Voice Frequency Telegraphy Device is suitable for various applications, including:

• Communication in energy transmission systems for grid operators
• Supervisory control for high-voltage networks
• Data exchange in SCADA systems for real-time monitoring
• Teleprotection applications requiring secure and reliable connectivity

FAQ

1. What is the weight of the 23WT22 Voice Frequency Telegraphy Device?
   The device weighs 0.9 kg.

2. What are the dimensions of this terminal?
   Its dimensions are 19 x 12 x 13.5 cm.

3. What is the frequency range of the 23WT22?
   It operates within a frequency range of 30–500 kHz.

4. What power supply does the device require?
   It operates on a 48/60V DC power supply with low consumption (<15 W).

5. Is it suitable for outdoor use?
   Yes, it is built to withstand extreme temperatures from -20°C to +65°C and has a humidity tolerance of 5–95% non-condensing.