DatasheetThe Current Monitors DG 3302 and DG 3382 are used to monitor limit values of AC and DC currents. Currents up to 6 A can be monitored directly. For higher currents, external current transformers or shunt resistors (input 30/150 mV) are connected.
Two switching outputs can be configured simultaneously or independently of each other with the analog control electronics as MIN or MAX alarm in open-circuit or closed-circuit operation.
All setting elements are located behind the openable front cover and can also be operated when the unit is mounted. The switching points and the switching hysteresis can be adjusted with potentiometers. The monitoring states are indicated by yellow LEDs.
Two relay changeover contacts are available on the DG 3302. The DG 3382 is equipped with two isolated transistor switching contacts (open-collector), which can optionally work with pull-up resistors. Input, power supply and the outputs are safely galvanically isolated from each other.
The Protective Separation and the 24 V DC power supply make the DG 3302 and DG 3382 universally applicable for all measurement and industrial applications, as well as for building automation.
Product line
| Device | Order No. |
|---|---|
| Current Monitor with relay contacts | DG 3302 |
| Current Monitor with transistor switches | DG 3382 |
Technical Data
Input
| Current Input | mV/Shunt Input | |
| Input ranges | 1.2 A, 6 A | 30 mV, 150 mV |
| Input resistance | 0.01 Ω | > 10 kΩ |
| Overload | 10 A continuous, surge current 30 A for 1 s | 30 V |
| Frequency | DC or 10 to 500 Hz sinusoidal, switchable | |
| Switch point setting | 0 to 110 % with 12-turn potentiometer, independently adjustable for each switching output | |
| Hysteresis setting | 0 to 6 % or 0 to 60 % of measuring range switchable, adjustable with potentiometer | |
Output
| DG 3302 (Relay): | |
| Contact type | 2 changeover relays (SPDT) |
| Switching capability AC max. | 250 V / 6 A, 1500 VA |
| Switching capability DC max. | 250 V / 0.2 A, 115 V / 0.3 A, 30 V / 6 A Recommended minimum load 300 mW / 5 V / 5 mA |
| DG 3382 (Transistors): | |
| Contact type | 2 transistor switches, optional 10 kΩ Pull-up resistor |
| Switching capability | 30 V DC, max. 50 mA, residual voltage < 1.5 V, not current limited |
| Status indication | one yellow LED per switching output |
| Response time | DC Input: approx. 20 ms AC Input: approx. 500 ms |
General Data
| Switch error | < 0.2 % full scale | |
| Temperature coefficient 1) | < 150 ppm/K | |
| Test voltage | 4 kV, 50 Hz, 1 min. input against power supply against both switching outputs 3 kV, 50 Hz, 1 min. switching output 1 against switching output 2 |
|
| Working voltage 2) (Basic Insulation) |
1000 V AC/DC for overvoltage category II and 600 V AC/DC for overvoltage category III acc. to EN 61010 and pollution degree 2 between input, power supply and both switching outputs. Furthermore 300 V AC/DC between output 1 and output 2. | |
| Protection against electrical shock 2) | Protective separation according to DIN EN 61140 by reinforced insulation according to DIN EN 61010 up to 600 V AC/DC at overvoltage category II and 300 V AC/DC at overvoltage category III at pollution degree 2 between input, power supply and both switching outputs. Furthermore 300 V AC/DC between output 1 and output 2. | |
| Power supply | 24 V DC, ± 15 %, approx. 0.7 W | |
| Ambient temperature | Operation Transport and storage |
–20 °C to +60 °C (-4 to +140 °F) –35 °C to +85 °C (-31 to +185 °F) |
| EMC 3) | EN 61326 -1 | |
| MTBF (acc. to EN 61709 / SN 29500) | 575.4 years (Tamb. 40 °C, FIT 198) | |
| Construction | 12.5 mm (0.5″) housing, protection class IP 20, mounting on 35 mm DIN rail acc. to EN 60715 | |
| Connection | Captive plus-minus clamp screws, Wire cross-section max. 2.5 mm² / AWG 14 Stripped length 6 … 8 mm / 0.28 in, Screw terminal torque 0.8 Nm / 7 lbf in |
|
| Weight | 70 g | |
- Average TC related to full scale value in specified operating temperature range, reference temperature 23 °C
- For applications with high working voltages, ensure there is sufficient spacing or isolation from neighboring devices and protection against electric shocks.
- Minor deviations possible during interference
Block diagram
Dimensions
Terminal assignments
- 1.1 +Power supply +
- 1.2 −Power supply −
- 2.1 +mV/Shunt Input +
- 3.1 +Current Input +
- 3.2 −Input −
- Output 1
- 4.1COM Out+
- 4.2NO Out−
- 5.1NC Pull-Up
- Output 2
- 6.1COM Out+
- 6.2NO Out−
- 5.2NC Pull-Up