ABB OTM C 21D User Manual

22
AUTOMATIC TRANSFER SWITCH, OTM_C_21D
Automatic transfer switch Parameters
Rated operational voltage Ue[V]
Single-phase (2P)
Three-phase (3P/4P)
220~240 V AC 50~60 Hz
380/400/415
Frequency 50Hz/60 Hz
Operating voltage range 0.7~1.3 Ue
Measuring accuracy ±3%
Operating angle 90° ( O-I, I-O, O-II, II-O)
180° ( I-O-II, II-O-I)
OFF time 0,6 - 0,7 s
Total transfer time 2.5 s
Output relay utilization category 3A, AC1, 250V
Electromagnetic compatibility Class B
Ingress Protection Rating IP20, front panel
Rated impulse withstand voltage Uimp 8 kV (6 kV for control circuit, disconnect the power line of
the control circuit before carrying out the dielectric voltage
withstand test)
Operating temperature -25~55C
Transportation and storage temperature -40~70C
Altitude Max. 2000 m
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5. Technical data
Table 9. Technical data

ABB OTM C 21D Specifications

General

Brand	ABB
Model	OTM C 21D
Category	Switch
Language	English