DG 3402
DG 3482
DG3402
DG3482

Voltage Monitor DG 3402 / DG 3482

Monitoring of AC and DC Voltages

The Voltage Monitors DG 3402 and DG 3482 are used to monitor limit values of AC and DC voltages.

Easy configuration on front panel
Measuring range and operating mode switchable, switch point and hysteresis adjustable with potentiometer
Status indication by LED
Easy monitoring and switching point adjustment
Relay changeover contacts with high power handling
or fully isolated transistor switching outputs
True 4-port separation
Protection against erroneous measurements due to parasitic voltages or ground loops
Protective Separation acc. to EN 61010
Protects service personnel and downstream devices against impermissibly high voltage
High reliability and noise immunity
No microprocessor, no integrated software
Extremely slim design
12.5 mm slim housing for a simple and space saving DIN rail mounting
5 Years Warranty
Defects occurring within 5 years from delivery date shall be remedied free of charge at our plant

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 3402. The DG 3482 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 3402 and DG 3482 universally applicable for all measurement and industrial applications, as well as for building automation.

Product line

Product line DG 3402
Device	Order No.
Voltage Monitor with relay contacts	DG 3402
Voltage Monitor with transistor switches	DG 3482

Downloads / Links

Data sheet

User Instructions (312.0 KiB)

Additional Documents

CAD data (839.9 KiB)

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Technical Data

Input

Input ranges	50 V, 100 V, 300 V, 600 V
Input resistance	1.5 MΩ
Overload max.	1000 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 3402 (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 3482 (Transistors):
Contact type	2 transistor switches, fully isolated, 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 (T_amb. 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