APD HV-DC - High Voltage - DC to DC Isolated Transmitter - Field Configurable

The APD HV-DC High Voltage DC to DC Isolated Transmitter is a rugged, field-configurable signal conditioning module designed to convert high voltage DC inputs into precise, isolated DC voltage or current outputs. Engineered for demanding industrial environments, this transmitter provides reliable signal isolation, scaling, and conversion for applications involving high voltage systems.

With input capability up to 1200 VDC, full 3-way isolation, and flexible field-selectable input and output ranges, the APD HV-DC is an ideal solution for monitoring and integrating high voltage signals into control systems, PLCs, and data acquisition platforms.

High Voltage Signal Conversion Made Simple

The APD HV-DC is specifically designed to accept high voltage DC signals and convert them into a lower-level, standardized output signal suitable for industrial instrumentation.

• Input range: 0–100 VDC up to 0–1200 VDC

• Output options: 0–1 V to ±10 VDC or 0–1 mA to 4–20 mA

This capability allows engineers to safely monitor high voltage systems while interfacing with standard control and measurement equipment.

Wide Range of Field-Selectable Input and Output Options

The APD HV-DC offers extensive flexibility through field-selectable input and output ranges.

Input Ranges:

• 0–100 VDC

• 0–200 VDC

• 0–300 VDC

• 0–400 VDC

• 0–500 VDC

• 0–1000 VDC

• 0–1200 VDC

• Custom ranges available

Output Ranges:

• Voltage outputs: 0–1 V, 0–5 V, 0–10 V, ±5 V, ±10 V

• Current outputs: 0–2 mA, 0–10 mA, 0–20 mA, 4–20 mA

These ranges are selectable via external switches, allowing for quick configuration without specialized tools.

Full 3-Way Isolation for Maximum Protection

One of the most critical features of the APD HV-DC is its full 3-way isolation between input, output, and power.

• Isolation rating: 1200 VRMS minimum

This level of isolation provides:

• Protection for downstream equipment

• Elimination of ground loops

• Improved noise rejection

• Increased system safety

This makes the APD HV-DC especially valuable in high voltage environments where electrical isolation is essential.

Designed for High Voltage Applications

The APD HV-DC is purpose-built for applications involving elevated DC voltages, including:

• DC motor and variable speed drives

• Electric railway voltage monitoring

• High voltage battery systems

• Power supply and converter systems

Its ability to safely convert and isolate high voltage signals makes it an essential component in modern energy and industrial systems.

Field Configurable for Fast Setup

The APD HV-DC is designed for quick and easy setup directly in the field.

• Input and output ranges are selectable via external switches

• Common configurations are printed directly on the module

• Custom factory-configured ranges are available

This “minute setup” capability simplifies installation and allows the module to be easily adapted to different applications.

High Accuracy and Stable Performance

The APD HV-DC delivers reliable and precise signal conversion:

• Linearity: ±0.1% of span

• Temperature stability: ±0.04% of span per °C

• Ripple and noise: <10 mVRMS

• Common mode rejection: 120 dB minimum

These specifications ensure accurate and stable signal transmission, even in electrically noisy environments.

LoopTracker® LEDs for Real-Time Monitoring

The APD HV-DC includes built-in LoopTracker LEDs that provide instant visual feedback:

• Green LED indicates input signal level

• Red LED indicates output signal level

• LED brightness varies with signal strength

These indicators allow operators to quickly verify signal flow and identify potential issues during installation or operation.

Output Test Function for Easy Diagnostics

A built-in test function allows users to simulate output signals without applying an input signal.

• Adjustable from 0 to 100% of output span

• Activated via front-mounted test button

• Useful for system verification and troubleshooting

This feature helps reduce commissioning time and simplifies diagnostics.

Flexible Current Output Configuration (Sink or Source)

The APD HV-DC supports both sinking and sourcing current output configurations.

• Selectable wiring for powered or unpowered devices

• Built-in 20 VDC loop supply for passive devices

This flexibility allows the module to integrate with a wide range of current loop systems without additional hardware.

Built-In Loop Power Supply

The integrated loop power supply simplifies system design by providing power to connected devices.

• 20 VDC nominal loop supply

• Supports passive current loop devices

This eliminates the need for external loop power sources, reducing wiring complexity.

Rugged Industrial Design

The APD HV-DC is designed for reliable operation in demanding environments:

• Operating temperature: –10°C to +60°C

• DIN rail mounting (35 mm standard)

• Compact housing: 22.5 mm wide

• IP40 rated enclosure

• Removable terminal blocks for easy installation

The durable design ensures long-term performance in industrial settings.

Easy Installation with Removable Connectors

The module features removable plug connectors for fast and convenient installation.

• Simplifies wiring and maintenance

• Supports up to 14 AWG wire

• Reduces downtime during installation or replacement

Typical Applications

The APD HV-DC is widely used in applications requiring high voltage signal conversion and isolation:

• Monitoring DC motor drives

• Measuring high voltage battery systems

• Integrating power supply outputs into control systems

• Electric rail and transportation systems

• Industrial energy and power monitoring

Why Use a High Voltage DC Transmitter?

High voltage signals cannot be directly connected to most control systems. A transmitter like the APD HV-DC provides:

• Safe signal scaling

• Electrical isolation

• Improved noise immunity

• Compatibility with standard instrumentation

Why Choose the APD HV-DC?

The APD HV-DC stands out as a high-performance solution due to its:

• High voltage input capability up to 1200 VDC

• Field-selectable input and output ranges

• Full 3-way isolation for safety and reliability

• High accuracy and stability

• Built-in loop power supply

• Sink/source current output flexibility

• Diagnostic LEDs and test functionality

• Rugged industrial design

A Reliable Solution for High Voltage Signal Conditioning

The APD HV-DC High Voltage DC to DC Isolated Transmitter provides a safe, accurate, and flexible way to convert high voltage signals into usable outputs for industrial systems. Its combination of performance, configurability, and durability makes it an essential tool for engineers working with high voltage applications.

Optimize Your High Voltage Measurement System

Whether you are monitoring battery systems, power converters, or industrial drives, the APD HV-DC delivers the performance and reliability needed to ensure accurate and safe operation.

Contact us today to learn more or configure a solution tailored to your application.