NK DLTB-420-24L-U-SP - DC Current Transducer, DLT Series

• Full scale range = 0-50 A
• Output signal = 4-20 mA
• Power supply = 24 VDC loop-powered
• Output polarity = Unipolar
• Case style (black only) = Split-core (min. range 0-50 A)

DLT Series DC Current Transducers combine a Hall effect sensor and a signal conditioner into a single package. The DLT Series DC Current Transducers are designed to produce an analog 4-20 mA signal proportional to the DC current in the primary conductor. These transducers are available in a solid-core or split-core case design. Lower current ranges make this sensor ideal for use in photovoltaic panel combiner boxes.

Photovoltaic Arrays

DC Current Transducer Applications

DC Current Monitoring

• PV Array combiner boxes.
• Wind generators.
• DC heating applications.
• UPS system monitoring.

DC Current Transducer Features

4-20 mA Loop-powered Output

• Industry standard connections, positive indication of correct field wiring.

Single Range

• No chance of field range selection errors.
• Eliminates zero and span pots.

Isolation

• Output is magnetically isolated from the primary circuit for safety.
• Eliminates insertion loss (voltage drop).

UL/cUL and CE Approved

• Accepted worldwide.

Monitoring PV Arrays

The current produced by a photovoltaic module or array can be easily monitored by using the DLT series current sensors over the conductor exiting the collectors. Using a simple two-wire connection powered by 24 VDC nominal in series with the sensor output, the sensor will produce a signal in real time that is directly proportional to the current being produced by the PV module. If a single cell fails, or a module quits operating properly, the current output will drop, and the current sensor will reflect the change. Safer and more stable than shunts, non-contact current sensors are a simple answer to measuring DC current at any point in the PV system.

DC Current Transducer Output

DC Current Transducer Connections

Notes: Fingersafe captive screw terminals. 12-22 AWG solid or stranded. Observe polarity.