ST 2500/4/23

Control- and isolating transformer

Version ST 2500/4/23

Rated input voltage 400 Vac Rated output voltage 230 Vac Rated power VDE (DB cos phi=1) 2,500 VA

Version	Rated input voltage	Rated output voltage	Rated power VDE (DB cos phi=1)
ST 20/23/12	230 Vac	12 Vac	20 VA
ST 20/23/24	230 Vac	24 Vac	20 VA
ST 20/23/23	230 Vac	230 Vac	20 VA
ST 20/4/23	400 Vac	230 Vac	20 VA
ST 63/11/24	115 Vac	24 Vac	63 VA
ST 63/23/12	230 Vac	12 Vac	63 VA
ST 63/23/24	230 Vac	24 Vac	63 VA
ST 63/23/23	230 Vac	230 Vac	63 VA
ST 63/4/24	400 Vac	24 Vac	63 VA
ST 63/4/42	400 Vac	42 Vac	63 VA
ST 63/4/23	400 Vac	230 Vac	63 VA
ST 63/44/23	440 Vac	230 Vac	63 VA
ST 63/69/23	690 Vac	230 Vac	63 VA
ST 100/23/12	230 Vac	12 Vac	100 VA
ST 100/23/24	230 Vac	24 Vac	100 VA
ST 100/23/23	230 Vac	230 Vac	100 VA
ST 100/4/24	400 Vac	24 Vac	100 VA
ST 100/4/23	400 Vac	230 Vac	100 VA
ST 100/69/23	690 Vac	230 Vac	100 VA
ST 130/23/24	230 Vac	24 Vac	130 VA
ST 130/23/11	230 Vac	110 Vac	130 VA
ST 130/4/23	400 Vac	230 Vac	130 VA
ST 130/69/23	690 Vac	230 Vac	130 VA
ST 160/23/24	230 Vac	24 Vac	160 VA
ST 160/23/23	230 Vac	230 Vac	160 VA
ST 160/4/24	400 Vac	24 Vac	160 VA
ST 160/4/23	400 Vac	230 Vac	160 VA
ST 160/69/23	690 Vac	230 Vac	160 VA
ST 250/11/24	115 Vac	24 Vac	250 VA
ST 250/23/12	230 Vac	12 Vac	250 VA
ST 250/23/24	230 Vac	24 Vac	250 VA
ST 250/23/42	230 Vac	42 Vac	250 VA
ST 250/23/23	230 Vac	230 Vac	250 VA
ST 250/4/23	400 Vac	230 Vac	250 VA
ST 250/4/24	400 Vac	24 Vac	250 VA
ST 250/44/23	440 Vac	230 Vac	250 VA
ST 250/69/23	690 Vac	230 Vac	250 VA
ST 320/23/24	230 Vac	24 Vac	320 VA
ST 320/23/23	230 Vac	230 Vac	320 VA
ST 320/4/23	400 Vac	230 Vac	320 VA
ST 320/69/23	690 Vac	230 Vac	320 VA
ST 400/11/23	115 Vac	230 Vac	400 VA
ST 400/23/24	230 Vac	24 Vac	400 VA
ST 400/23/23	230 Vac	230 Vac	400 VA
ST 400/4/24	400 Vac	24 Vac	400 VA
ST 400/4/23	400 Vac	230 Vac	400 VA
ST 400/69/23	690 Vac	230 Vac	400 VA
ST 500/11/23	115 Vac	230 Vac	500 VA
ST 500/23/23	230 Vac	230 Vac	500 VA
ST 500/23/24	230 Vac	24 Vac	500 VA
ST 500/23/42	230 Vac	42 Vac	500 VA
ST 500/4/24	400 Vac	24 Vac	500 VA
ST 500/4/23	400 Vac	230 Vac	500 VA
ST 500/44/23	440 Vac	230 Vac	500 VA
ST 500/69/23	690 Vac	230 Vac	500 VA
ST 630/23/23	230 Vac	230 Vac	630 VA
ST 630/23/42	230 Vac	42 Vac	500 VA
ST 630/4/23	400 Vac	230 Vac	630 VA
ST 630/69/23	690 Vac	230 Vac	630 VA
ST 800/11/11	115 Vac	115 Vac	800 VA
ST 800/23/23	230 Vac	230 Vac	800 VA
ST 800/4/24	400 Vac	24 Vac	800 VA
ST 800/4/23	400 Vac	230 Vac	800 VA
ST 800/44/23	440 Vac	230 Vac	800 VA
ST 800/69/23	690 Vac	230 Vac	800 VA
ST 1000/11/23	115 Vac	230 Vac	1,000 VA
ST 1000/23/23	230 Vac	230 Vac	1,000 VA
ST 1000/4/23	400 Vac	230 Vac	1,000 VA
ST 1000/44/23	440 Vac	230 Vac	1,000 VA
ST 1000/5/23	500 Vac	230 Vac	1,000 VA
ST 1000/69/23	690 Vac	230 Vac	1,000 VA
ST 1600/4/23	400 Vac	230 Vac	1,600 VA
ST 1600/69/23	690 Vac	230 Vac	1,600 VA
ST 2000/4/23	400 Vac	230 Vac	2,000 VA
ST 2000/69/23	690 Vac	230 Vac	2,000 VA
ST 2500/4/23	400 Vac	230 Vac	2,500 VA
ST 2500/69/23	690 Vac	230 Vac	2,500 VA

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CAD/CAE data 3D-CAD-Model (STEP) ePlan Makro Additional information Product Change Notification Approval

Technical data for ST 2500/4/23

Input
Rated input voltage	400 Vac
Tappings Input	±5 %
Rated frequency	50 - 60 Hz

Output
Rated output voltage	230 Vac
Rated power VDE (DB cos phi=1)	2,500 VA
Rated power VDE (KB cos phi=0.5)	12,400 VA
No-load voltage (app. x factor)	1.03
Efficiency	96.0 %
UL Derating	-

Standards
Classification	Control- and isolating transformer

Approvals
Approvals	cURus, VDE

Environment
Ambient temperature max.	40 °C
Type of cooling	self-cooling

Safety and protection
Type	Open type
Insulation class	VDE=B, UL=class 130
Protection index	IP 00
Safety class (prepared)	I
Short circuit strength	non-short-circuit proof

PRI Fusing recommendation by circuit breaker with tripping characteristic type 20 x Irated related to set)
Setting range	6.30 - 10.00 A
Setting value	6.50 A

Terminal and mounting
Fixing method	Base plate
Fixing screws	M8
Terminals Input	Screw clamp, 4 mm²
Terminals Output	Screw clamp, 4 mm²
Terminals PE	Tab connector, 6.3 x 0.8 mm

Measures and weights
Width	192 mm
Height	185 mm
Depth	185 mm
Weight	25.50 kg

Info on ST series

General Data

Maximum ambient temperature 40 °C
Rated input voltage 115 - 690 Vac
Rated output voltage 12 - 230 Vac
Rated power 20 - 2,500 VA
Insulation class B
Efficiency up to 96 %
Degree of protection IP 00

Benefits

Contact protected screw connection terminals complying with UVV BGV A3
Very good corrosion protection and low noise thanks to BLOCK IMPEX vacuum impregnation
Very good switch-on behaviour thanks to reduced starting currents
Primary side ±5 % tappings for voltage adjustment
Simple mounting thanks to robust metal footplate with oval slots
High power density due to a compact construction design

Standards

Control transformer
to: VDE 0570 Teil 2-2, DIN EN 61558-2-2, EN 61558-2-2, IEC 61558-2-2,
UL 5085-1/-2, CSA 22.2 No.66
Isolating transformer
to: VDE 0570 Part 2-4, DIN EN 61558-2-4, EN 61558-2-4, IEC 61558-2-4, UL 5085-1/-2, CSA 22.2 No.66

Approvals

VDE, UL 5085-1/-2, CSA 22.2 No.66

Applications

As a safety isolating transformer for the safe electrical isolation of the input and output sides. The transformer is suitable for creating SELV and PELV circuits because of the limit on the output voltage.
As an isolating transformer for the safe electrical isolation of the input and output sides. The transformer may be used to set up protective separation as a protective measure in accordance with VDE 0100.
As a control transformer for the electrical isolation of the input and output sides. The construction of the transformer is designed to supply control systems according to EN 60204.

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