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Voltage Measuring Contactor DG 3400
Monitoring of AC/DC Voltage
The Voltage Measuring Contactor DG 3400 is used to monitor limit values of AC/DC voltages.
- Easy selection of operating mode
MIN / MAX alarm switch selectable, switch point and hysteresis adjustable on front panel - Relay with high power handling
or wearless optocoupler swiching output - True 4-port separation
Protection against erroneous measurements due to parasitic voltages or ground loops - Switch state indicated by LED
Easy to adjust the set point and hysteresis - Protective Separation acc. to EN 50178
Protects service personnel and downstream devices against impermissibly high voltage - High reliability and long-term stability
No maintenance costs - Unlimited use with 24 V AC/DC power supply
Universally applicable for all measurement and industrial applications - 5 Years Warranty
Defects occurring within 5 years from delivery date shall be remedied free of charge at our plant (carriage and insurance paid by sender)
High reliability and Protective Separation are essential characteristics that contribute to fault-free equipment operation.
Two switch channels can be separately configured. The switch point and the switch hysteresis can each be adjusted by means of their own 12-turn potentiometer located on the unit’s front panel. The switch state is indicated by a yellow LED.
The direction of effect and the mode of operation can be switched by means of DIP switch settings. Both switch outputs can be set up as either MIN or MAX alarms. The relay contacts switch high power loads either as N.O. or N.C. contacts.
Protective Separation and the 24 V AC/DC power supply make the DG 3400 universally applicable for all measurement and industrial applications, as well as for building automation.
Product line
| Devices | Order No. |
|---|---|
| Voltage Measuring Contactor with relay contacts | DG 3400 |
| Voltage Measuring Contactor with transistor switches | DG 3480 |
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Technical Data
Input
| Input signal | Measuring ranges: 24 V, 48 V, 100 V, 120 V, 250 V, 500 V switchable Unipolar, bipolar or sinusoidal alternating current voltages, f = 10 to 500 Hz |
| Input resistance | 1 MOhm |
| Overload | Max. 600 V, continuous |
| Set point range | 0 to 100 % of input range with 12-turn potentiometer , MIN/MAX-Alarm switchable |
| Hysteresis | 0 to 60 % of final value with 12-turn potentiometer |
Output
| DG 3400 (Relay): Contact type Switching cap. AC max. Switching cap. DC max. |
2 SPDT relays, mode of operation switchable 250 V / 6 A 1500 VA 250 V / 0.2 A 115 V / 0.3 A 30 V / 6 A Recommended minimum load 300 mW / 5 V / 5 mA |
| DG 3480 (Optocoupler): Contact type Switching capability |
2 optocoupler transistor switches, mode of operation switchable 30 V DC, max. 50 mA |
| Switch state indicator | Yellow LED |
| Response time | DC Input: approx. 20 ms AC Input: approx. 500 ms |
General Data
| Set point error | < 0,2 % full scale | |
| Temperature coefficient 1) | < 150 ppm/K | |
| Test voltage | 4 kV AC, 50 Hz, 1 min., input against power supply against both switching outputs 2.5 kV AC, 50 Hz, 1 min., switching output I against switching output II |
|
| Working voltage 2) (Basic Insulation) |
600 V AC/DC for overvoltage category III and pollution degree 2 acc. to EN 50178 between input, power supply and relay outputs. Up to 300 V AC/DC between both relay outputs. |
|
| Protection against electrical shock 2) | Protective separation according to EN 50178 by reinforced insulation up to 300 V AC/DC for overvoltage category II and pollution degree 2 between input, power supply and relay outputs. |
|
| Power supply | 24 V AC/DC, ± 15 % | AC: 48 to 62 Hz, approx. 2 VA DC: approx. 1 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 | |
| Construction | 22.5 mm (0.89") housing, protection class: IP 20 mounting on 35 mm DIN rail acc. to EN 60715 |
|
| Weight | Approx. 100 g | |
Other measuring ranges on request.
- 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
- 7 + Input
- 8 − Input
- 1, 2 Power supply 24 V AC/DC
- 3, 4 Power supply 24 V AC/DC
- 11 N/C
- 9, 10 Output I
- 12 N/O
- 15 N/C
- 13, 14 Output II
- 16 N/O
Subject to change!