Characteristics Setting For The Optional Setting Modules - Mitsubishi Electric AE-SW Series Instruction Manual

Characteristics setting for the optional setting modules

< Characteristics setting for the G1 module >
1
˜To provide ground fault protection for a 3-pole breaker used in the 3-phase 4-wire
system, a neutral pole CT (NCT) is required. For the speci cation, refer to the catalog.
For the installation of the NCT, refer to the instruction manual provided with the NCT.
˜The G1 module cannot be attached to the AE630-SW low rating models (CT rating:
500 A, 315 A, 250 A).
To set the ground fault pick-up current Ig to 0.1, the control power supply must be
applied. (If the control power supply is not applied, ground fault protection cannot be
provided correctly.)
Table 28-1
No. Setting item Symbol Characteristic setting range
Ground fault
①
Ig
pick-up current
3.0-1.5-0.8-0.5-0.3-0.15-<0.1 - <0.1-0.15-0.3-0.5-0.8-1.5-3.0 s
Ground fault
②
Tg
(TRIP)
operating time
– –
Alarm output TRIP: self-hold type / ALARM: automatic reset type
< Characteristics setting for the E1 module >
E1 module, in combination with an external ZCT, provides electric leakage
protection.
To provide the electric leakage protection, a control power supply is required.
ZCT for load circuit
ZCT type Breaker type, number of poles
AE630-SW ~ AE1600-SW 3-pole
ZCT163
AE630-SW ~ AE1600-SW 4-pole
ZCT323
AE2000-SW ~ AE3200-SW 3-pole
ZCT324 AE2000-SW ~ AE3200-SW 4-pole
Type combinations shown in this table are for reference.
Choose the one that matches the size of the conductor to be connected.
ZCT with primary conductor
ZCT type Breaker type, number of poles
AE630-SW ~ AE1000-SW 3-pole model
ZTA1200A
AE1250-SW ~ AE2000-SW 3-pole model
ZTA2000A
AE2000-SWA 3-pole model
The types not listed above can also be used if their rated current
setting (Ir) is ZCT permissible current value or lower.
ZCT for transformer earth wire
ZCT type
ZT15B ZT30B ZT40B
Be sure to use with the ZCT specified by Mitsubishi Electric.
For the ZCT installation, refer to the instruction manual provided with the ZCT.
Table 28-2
No. Setting item Symbol Characteristic setting range
ER Pick-up
①
I∆n
current
3-1.5-0.8-0.5-0.3-0.15-<0.1s - <0.1-0.15-0.3-0.5-0.8-1.5-3 s
ER Operating
②
Te (TRIP)
time
– –
Alarm output TRIP: self-hold type / ALARM: automatic reset type
E-28
2
0.1 to 1.0 × In (0.1 step)
(ALARM)
(at 1.5×Ig)
ZT60B ZT80B ZT100B
1-2-3-5-10A
(ALARM)
(at 1.5×I∆n)
Accuracy Factory default value
±20% 1.0
±20% 3s(TRIP)
–
Self-hold type(TRIP)
1A
Accuracy Factory default value
0%
10A
-30%
±20% 3s(TRIP)
–
Self-hold type(TRIP)
①
Ground fault pick-up current: Ig
0.1 1.0
3.0±20%
②
Ground fault operating time: Tg
0.15±20%
<0.1
(0.04 to 0.1s)
Ground fault current (% of CT rating In)
1
①
ER Pick-up current: I∆n
10A
3.0s±20%
②
ER Operating time: Te
0.15s±20%
<0.1s
(0.04 to 0.1s)
Electric leakage current (A)
2