Transformer current transmitter DT1612 I

DIN railACanalog

Product features

• Measuring ranges: 0–1 A / 0–5 A / 0–10 A (AC), switch selectable
• True RMS (TRMS) conversion
• Measurement category: CAT III
• Accuracy: 0.2% (40–400 Hz)
• Selectable outputs: 0–20 mA / 4–20 mA or 0–10 V / 2–10 V (only one output active)
• Power supply options: 24 VDC ±10% or 230 V AC/DC ±10% (DT1612 I PS)
• 22.5 mm wide TS-35 rail-mounted terminal housing
• Complies with EN 60688 and isolation per EN 61010-1

Product description
The DT1612 I AC current transmitters provide an analogue output proportional to the true RMS value of the measured AC current. The input is isolated from the measured network via a broadband measuring transformer and meets CAT III requirements. Measuring ranges are selected via front-panel switches:

• 0–1 A (AC)
• 0–5 A (AC)
• 0–10 A (AC)

The continuous input overcurrent capability is 20 A and short-term (1 s) capability is 200 A. The input range can be extended using an external current transformer with a ratio of x/5 or x/1.

Two mutually exclusive outputs are provided; only one may be used at a time:

• 0 (4)–20 mA DC current output
• 0 (2)–10 V DC voltage output

The output range and type are selected by a front-panel switch. Typical accuracy is 0.2% within 40–400 Hz. Maximum settling time is 120 ms. Front-panel indicators show operational status and fault conditions. Inputs, outputs and supply are galvanically isolated in accordance with EN 61010-1. The device is supplied in a 22.5 mm TS-35 rail terminal housing and fully complies with EN 60688.

Technical specifications

• Safety: Inputs, outputs and supply galvanically isolated (EN 61010-1)
• Pollution degree: 2
• Measurement category: CAT III
• Input: 0–1 A / 0–5 A / 0–10 A (AC)
• Continuous overcurrent: 20 A; short-term (1 s): 200 A
• Input consumption: 0.2 VA (max.)
• Frequency range: 40–400 Hz
• Outputs: 0–10 V (max. 14 V) or 0–20 mA (max. 24 mA)
• Load/termination: voltage output min. 500 Ω, current output max. 500 Ω
• Overvoltage protection: 18 V (limiter); Overcurrent protection: 40 mA (limiter)
• Settling time: 120 ms (max.)
• Output error: 0.2% (max.)
• Temperature coefficient: approx. 25 ppm/°C
• Power supply: 24 VDC ±10% (DT1612 I) or 230 V AC/DC ±10% (DT1612 I PS)
• Consumption: 1.2 W (24 VDC) / 1.5 VA (230 V)
• Operating temperature: 0–50 °C (on request -20–+50 °C)
• Relative humidity: max. 90% non‑condensing
• Installation: cabinet, vertical on horizontal TS-35 rail recommended
• EMC: EN 61326-1 (Emission Group 1 Class B; Immunity: industrial)
• Mechanical: TS-35 rail-mounted terminal housing, polyamide PA6.6; dimensions 22.5 × 104 × 114 mm (W×H×D); weight 0.125 kg; IP20