input
type of the power supply network		3-phase AC
supply voltage at AC
● minimum rated value		400 V
● maximum rated value		500 V
● initial value		340 V
● full-scale value		550 V
wide range input		Yes
buffering time for rated value of the output current in the event of power failure minimum		6 ms
operating condition of the mains buffering		at Vin = 400 V
line frequency		50/60 Hz
line frequency		47 ... 63 Hz
input current
● at rated input voltage 400 V		2 A
● at rated input voltage 500 V		1.7 A
current limitation of inrush current at 25 °C maximum		60 A
I2t value maximum		3.4 A²·s
fuse protection type		none
fuse protection type in the feeder		Required: 3-pole connected miniature circuit breaker 10 ... 16 A characteristic C or circuit breaker 3RV2011-1DA10 (setting 3 A) or 3RV2711-1DD10 (UL 489-listed, DIVQ)
output
voltage curve at output		Controlled, isolated DC voltage
output voltage at DC rated value		24 V
output voltage
● at output 1 at DC rated value		24 V
output voltage adjustable		Yes; via potentiometer
adjustable output voltage		24 ... 28 V; max. 960 W
relative overall tolerance of the voltage		3 %
relative control precision of the output voltage
● on slow fluctuation of input voltage		1 %
● on slow fluctuation of ohm loading		2 %
residual ripple
● maximum		150 mV
voltage peak
● maximum		240 mV
display version for normal operation		Green LED for 24 V OK
type of signal at output		Relay contact (NO contact, rating 60 V DC/ 0.3 A) for "24 V OK"
behavior of the output voltage when switching on		No overshoot of Vout (soft start)
response delay maximum		1.5 s
voltage increase time of the output voltage
● typical		15 ms
● maximum		500 ms
output current
● rated value		40 A
● rated range		0 ... 40 A; 48 A up to +45°C; +60 ... +70 °C: Derating 3%/K
supplied active power typical		960 W
short-term overload current
● on short-circuiting during the start-up typical		65 A
● at short-circuit during operation typical		65 A
duration of overloading capability for excess current
● on short-circuiting during the start-up		100 ms
● at short-circuit during operation		100 ms
bridging of equipment		Yes
number of parallel-switched equipment resources for increasing the power		2
efficiency
efficiency in percent		91.5 %
power loss [W]
● at rated output voltage for rated value of the output current typical		89 W
closed-loop control
relative control precision of the output voltage with rapid fluctuation of the input voltage by +/- 15% typical		3 %
relative control precision of the output voltage load step of resistive load 50/100/50 % typical		1.5 %
setting time
● load step 50 to 100% typical		1 ms
● load step 100 to 50% typical		1 ms
relative control precision of the output voltage at load step of resistive load 10/90/10 % typical		3 %
setting time
● load step 10 to 90% typical		1 ms
● load step 90 to 10% typical		1 ms
● maximum		10 ms
protection and monitoring
design of the overvoltage protection		protection against overvoltage in case of internal fault Vout < 35 V
property of the output short-circuit proof		Yes
design of short-circuit protection		Electronic shutdown, automatic restart
● typical		50 A
overcurrent overload capability
● in normal operation		overload capability 150 % Iout rated up to 5 s/min
enduring short circuit current RMS value
● maximum		14 A
safety
galvanic isolation between input and output		Yes
galvanic isolation		Safety extra-low output voltage Vout acc. to EN 60950-1 and EN 50178, transformer acc. to EN 61558-2-16
operating resource protection class		Class I
protection class IP		IP20
EMC
standard
● for emitted interference		EN 55022 Class B
● for mains harmonics limitation		EN 61000-3-2
● for interference immunity		EN 61000-6-2
standards, specifications, approvals
certificate of suitability
● CE marking		Yes
● UL approval		Yes; cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259; cCSAus (CSA C22.2 No. 60950-1, UL 60950-1)
● CSA approval		Yes; cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259; cCSAus (CSA C22.2 No. 60950-1, UL 60950-1)
● UKCA marking		Yes
● EAC approval		Yes
● NEC Class 2		No
type of certification
● BIS		Yes; R-41183539
● CB-certificate		Yes
MTBF at 40 °C		500 000 h
standards, specifications, approvals hazardous environments
certificate of suitability
● IECEx		No
● ATEX		No
● ULhazloc approval		No
● cCSAus, Class 1, Division 2		No
● FM registration		No
standards, specifications, approvals marine classification
shipbuilding approval		Yes
Marine classification association
● American Bureau of Shipping Europe Ltd. (ABS)		Yes
● French marine classification society (BV)		No
● Det Norske Veritas (DNV)		Yes
● Lloyds Register of Shipping (LRS)		No
standards, specifications, approvals Environmental Product Declaration
Environmental Product Declaration		Yes
global warming potential [CO2 eq]
● total		2 847 kg
● during manufacturing		61.2 kg
● during operation		2 783.6 kg
● after end of life		0.92 kg
ambient conditions
ambient temperature
● during operation		-25 ... +70 °C; with natural convection
● during transport		-40 ... +85 °C
● during storage		-40 ... +85 °C
environmental category according to IEC 60721		Climate class 3K3, 5 ... 95% no condensation
connection method
type of electrical connection		screw terminal
● at input		L1, L2, L3, PE: 1 screw terminal each for 0.5 ... 4 mm² single-core/finely stranded
● at output		+, -: 2 screw terminals each for 0.5 ... 10 mm²
● for auxiliary contacts		13, 14 (alarm signal): 1 screw terminal each for 0.05 ... 2.5 mm²
mechanical data
width × height × depth of the enclosure		145 × 145 × 150 mm
installation width × mounting height		145 mm × 225 mm
required spacing
● top		40 mm
● bottom		40 mm
● left		0 mm
● right		0 mm
fastening method		Snaps onto DIN rail EN 60715 35x15
● DIN-rail mounting		Yes
● S7 rail mounting		No
● wall mounting		No
housing can be lined up		Yes
net weight		3.1 kg
accessories
electrical accessories		Redundancy module, buffer module, selectivity module, DC UPS
mechanical accessories		Device identification label 20 mm × 7 mm, pale turquoise 3RT1900-1SB20