Page 24 - EPR Catalog 2015
P. 24
CT-D range
Technical data
1 Data at Ta = 25 °C and rated values, unless otherwise indicated
CT-D with 1 c/o CT-D with 2 c/o CT-MFD.21
contact contacts
Input circuit - Supply circuit
Rated control supply voltage Us 24-240 V AC / 24-48 V DC 12-240 V AC/DC
Rated control supply voltage US tolerance -15...+10 %
Rated frequency DC or 50/60 Hz
Frequency range AC 47-63 Hz
Typical current / power consumption see data sheet
Power failure buffering time min. 20 ms
Release voltage > 10 % of the minimum rated control supply voltage Us
Input circuit - Control circuit
Control input, control function A1-Y1/B1 start timing external
Kind of triggering voltage-related triggering
yes
Resistance to reverse polarity yes / yes
Parallel load / polarized 50 m - 100 pF/m
Maximum cable length to the control inputs 20 ms
Minimum control pulse length see rated control supply voltage
Control voltage potential see data sheet
Current consumption of the control input
Timing circuit
Time ranges 7 time ranges 0.05 s - 100 h 1.) 0.05-1 s 2.) 0.5-10 s 3.) 5-100 s 4.) 0.5-10 min
5.) 5-100 min 6.) 0.5-10 h 7.) 5-100 h
4 time ranges 0.05 s - 10 min (CT-SDD, CT-SAD) 1.) 0.05-1 s 2.) 0.5-10 s 3.) 5-100 s 4.) 0.5-10 min
Recovery time < 50 ms
Accuracy within the rated control supply voltage tolerance ͬt < 0.005 % / V
Accuracy within the temperature range ͬt < 0.06 % / °C
Repeat accuracy (constant parameters) ͬt < ± 0.5 %
Setting accuracy of time delay IEC/EN 61812-1 ± 10% of full-scale value
Star-delta transition time CT-SDD / CT-SAD fixed 50 ms /
adjustable: 20 ms, 30 ms, 40 ms, 50 ms, 60 ms, 80 ms or 100 ms
Star-delta transition time tolerance CT-SDD / CT-SAD ±3 ms
Indication of operational states
Control supply voltage / timing U: green LED V: control supply voltage applied
W: timing
Relay energized (1 c/o contact /
2 c/o contacts or inst. contact) R: yellow LED V: output relay energized
Operating elements and controls
Adjustment of the time range front-face rotary switch, direct reading scales
Fine adjustment of the time value front-face potentiometer
Preselection of the timing function at multifunction devices front-face rotary switch, direct reading scales
Adjustment of the transition time CT-SAD front-face potentiometer
Output circuit
Kind of output 15-16/18 Relay, 1 c/o contact -
15-16/18; 25-26/28 - Relay, 2 c/o contacts
Relay, 2 n/o contacts (CT-SDD, CT-SAD)
17-18; 17-28
Contact material AgNi alloy, Cd free
Rated operational voltage Ue 250 V
Minimum switching voltage / minimum switching current 12 V / 100 mA
Maximum switching voltage / maximum switching current 250 V AC / 6 A 250 V AC / 5 A
Rated operational current Ie AC-12 (resistive) at 230 V 6 A 5A n/o: 3 A n/c: 0.75 A
(IEC/EN 60947-5-1 ) AC-15 (inductive) at 230 V 3 A 3A
5A 1A
DC-12 (resistive) at 24 V 6 A 2A n/o: B 300 n/c: C 300
DC-13 (inductive) at 24 V 2 A
AC rating (UL 508) utilization category (Control Circuit Rating Code) B 300
max. rated operational voltage 300 V AC
Maximum continuous thermal current at B300 5 A n/o: 5 A
Maximum continuous thermal current at C300 - n/c: 2.5 A
max. making/breaking apparent power at B300 3600 VA / 360 VA n/o: 3600/360 VA
max. making/breaking apparent power at C300 - n/c: 1800/180 VA
6 A fast-acting
Mechanical lifetime 30 x 106 switching cycles
Electrical lifetime 0.1 x 106 switching cycles
Max. fuse rating to achieve short-circuit protection n/c contact 6 A fast-acting
(IEC/EN 60947-5-1) n/o contact 10 A fast-acting
1/13 ABB | Catalog Electronic Products and Relays 2015 | 2CDC 110 004 C0210
