Instruction manual

KRB-5377
18
Table 6 shows the dielectric withstand voltage and the insulation resistance of the ACBs.
CAUTION
z Do not perform dielectric withstand/insulation resistance tests under other conditions than specified. Doing so may cause a
malfunction.
Table 6 Dielectric withstand voltage and insulation resistance
Circuit Dielectric withstand voltage (50/60Hz)
Impulse withstand
voltage U
imp
Insulation
resistance
(DC500V Megger
used)
Main circuit Between poles, and terminal group and ground AC3500V 1 minute 12kV
300MΩ
For general feeder Between terminal group and ground AC2500V 1 minute 6kV
100MΩ
Auxiliary
switches
For microload Between terminal group and ground AC2000V 1 minute 4kV
100MΩ
Position switches Between terminal group and ground AC2000V 1 minute 4kV
100MΩ
Overcurrent release Between terminal group and ground AC2000V 1 minute 4kV
100MΩ
Control circuit
Undervoltage trip device,
Reverse power trip device
Between terminal group and ground AC2500V 1 minute 6kV
100MΩ
Other accessories Between terminal group and ground AC2000V 1 minute 4kV
100MΩ
The above data applies to new ACBs. Device terminals within ACBs are not covered. Use a DC500V Megger to measure the insulation resistance.
Table 7 shows the internal resistance and power consumption of the ACBs.
Table 7 Internal resistance and power consumption
Type AR208S AR212S AR216S AR220S AR325S AR332S AR440SB AR440S
Frame size (A) 800 1250 1600 2000 2500 3200 4000 4000
DC internal resistance (mΩ) (for 1-pole ACB)
0.033 0.033 0.028 0.024 0.014 0.014 0.017 0.014
AC power consumption (W) (for 3-pole ACB) 200 350 350 490 600 780 1650 1060
Type AR212H AR216H AR220H AR316H AR320H AR325H AR332H AR420H AR440H
Frame size (A) 1250 1600 2000 1600 2000 2500 3200 2000 4000
DC internal resistance (mΩ) (for 1-pole ACB)
0.024 0.024 0.024 0.014 0.014 0.014 0.014 0.014 0.014
AC power consumption (W) (for 3-pole ACB) 260 350 490 310 430 600 780 *1 1060
*1:Contact us.
Table 8 shows applicable current of the ACBs. The applicable current varies depending on the ambient temperatures.
Table 8 Dependence of applicable current on ambient temperature
Type AR208S AR212S AR216S AR220S AR325S AR332S AR440SB AR440S
Standard
Conductor size
Ambient
temperature (°C)
2 × 50 × 5t 2 × 80 × 5t 2 × 100 × 5t 3 × 100 × 5t 2 × 100 × 10t 3 × 100 × 10t 4 × 150 × 10t 4 × 150 × 6t
40 (standard ambient
temperature)
800 1250 1600 2000 2500 3200 4000 4000
45 800 1250 1600 2000 2500 3200 4000 4000
50 800 1250 1600 2000 2500 3200 3940 4000
55 800 1200 1540 1820 2500 2990 3820 3940
IEC60947-2
EN60947-2
AS3947-2
JIS C8201-2-1
Ann.1 Ann.2
60 800 1150 1460 1740 2400 2850 3690 3760
40 (standard ambient
temperature)
800 1250 1540 2000 2500 3200 3310 3700
45 800 1190 1470 1960 2500 3010 3200 3580
50 800 1130 1390 1860 2440 2860 3100 3470
55 790 1070 1310 1750 2300 2690 2980 3350
NEMA,SG-3
ANSI C37.13
60 740 1000 1230 1640 2150 2520 2870 3140
40 (standard ambient
temperature)
800 1100 1460 1740 2370 2610 2870 3230
45 800 1060 1400 1680 2280 2510 2750 3100
50 800 1010 1340 1600 2180 2400 2620 2970
55 770 960 1280 1530 2080 2290 2490 2830
JEC-160
60 730 920 1220 1450 1970 2170 2360 2690
Type AR212H AR216H AR220H AR316H AR320H AR325H AR332H AR420H AR440H
Standard
Conductor size
Ambient
temperature (°C)
2 × 80 × 5t 2 × 100 × 5t 3 × 100 × 5t 2 × 100 × 5t 3 × 100 × 5t 2 × 100 × 10t 3 × 100 × 10t 2 × 150 × 6t 4 × 150 × 6t
40 (standard ambient
temperature)
1250 1600 2000 1600 2000 2500 3200 2000 4000
45 1250 1600 2000 1600 2000 2500 3200 2000 4000
50 1250 1600 2000 1600 2000 2500 3200 2000 4000
55 1250 1600 1820 1600 2000 2500 2990 2000 3940
IEC60947-2
EN60947-2
AS3947-2
JIS C8201-2-1
Ann.1 Ann.2
60 1250 1550 1740 1600 2000 2400 2850 2000 3760
40 (standard ambient
temperature)
1250 1600 2000 1600 2000 2500 3200 *1 3700
45 1250 1600 1960 1600 2000 2500 3010 *1 3580
50 1250 1600 1860 1600 2000 2440 2860 *1 3470
55 1250 1510 1750 1600 1950 2300 2690 *1 3350
NEMA,SG-3
ANSI C37.13
60 1240 1420 1640 1550 1830 2150 2520 *1 3140
40 (standard ambient
temperature)
1250 1500 1740 1600 2000 2370 2610 *1 3230
45 1250 1440 1680 1600 2000 2280 2510 *1 3100
50 1250 1380 1600 1600 2000 2180 2400 *1 2970
55 1250 1310 1530 1600 1920 2080 2290 *1 2830
JEC-160
60 1230 1250 1450 1600 1820 1970 2170 *1 2690
*1:Contact us.
Notes: For AR208S, AR212S and AR216S, it is assumed that main circuit terminals are of horizontal type at both the line and load sides. For other types, it is assumed that main
circuit terminals are of vertical type at both the line and load sides. The above values may vary depending on the switchboard configuration.