9 – 77
9.2.2.5 Connecting the voltage transformer
The metering module ("Meter
PLUS
Function") can be set to expect 3W or 4W (LL/LG) connections and will adjust the amplitude and phase
of the signal as necessary.
The parameters on the trip unit must be set as follows:
(1)
VT Primary voltage (240 V/480 V/600 V)
(2)
VT Secondary voltage
(100 V/110 V/120 V)
(3)
VT Connection
(Wye / LG, Delta / LL)
Three VTs must be used at all times.
All three VTs must be rated for the rated LL voltage (e.g. 480 V) and can have either 100 V / 110 V or 120 V secondary rated voltage.
DANGER
Hazardous voltage.
Will cause death, serious personal injury, or equipment damage.
Turn off and lock out all power supplying this device before working on this device.
Note:
Required primary and secondary overcurrent protection (fusing) not shown for clarity.
to X8.8
to X8.7
to X8.6
to X8.5
L1
L2
L3
LN
120V/ 3
primary bus
configuration
VT primary
connection
VT primary
connection
3:4W System: Wye (L-N, L-G) Connection
Secondary
to X8.8
to X8.7
to X8.6
to X8.5
L1
L2
L3
V
1-2
120V
V
2-3
V
3-1
Primary
V
L-L
(V
L-L
)/ 3
(V
L-L
)/ 3
V
L-L
3:3W System: Delta (L-L) Connection
Secondary
Primary
(assuming 480V LL)
(277V)
(69V)
(assuming 480V LL)
(480V)
208V
V
L-L
(480V)
120V
Metering VT Settings:
Delta/Wye : Delta
VT Primary: 480 (for instance)
VT Secondary: 120 (for instance)
Metering VT Settings:
Delta/Wye : Wye
VT Primary: 480 (for instance)
VT Secondary: 120 (for instance)
primary bus
configuration
69V
Содержание UL 1066
Страница 43: ...6 12 7 Reset reclosing lockout 8 Charge closing spring 9 Switch ON Frame size II Frame size III 9X ...
Страница 56: ...7 5 7 2 Frame size II fused ...
Страница 58: ...7 7 ...
Страница 63: ...7 12 8 27 210 0 8 27 210 0 8 27 210 0 3 75 95 2 ...
Страница 64: ...7 13 ...
Страница 65: ...7 14 7 7 Frame size III fuse carriage ...
Страница 66: ...7 15 ...
Страница 69: ...7 18 7 9 External sensor for neutral conductor WLNCT2 ...
Страница 70: ...7 19 WLNCT3 ...
Страница 85: ...9 5 I tripping Ground fault tripping ...
Страница 231: ...15 12 Pre assembling the locking module Installing 0767 1 2 3 4 6 5 ...
Страница 232: ...15 13 1 Socket head cap screw M5 with washer and nut 7 8 Size 4 5 Nm 45 lb in ...
Страница 271: ...19 10 Function check Then Fit back front panel and side cover on the right if it was removed page 23 4 10 ...
Страница 280: ...21 2 Installing the door sealing frame Not for use with fuse carriages Catalog No Door sealing frame WLDSF 1 2 3 NOTICE ...
Страница 289: ...23 7 23 3 3 Installing arc chutes 1 2 6 5 PH 2 0043 02 3 4 5 6 For frame size III 3 PH 2 ...
Страница 298: ...23 16 6 7 8 9 5 2 1 Size 5 mm ...
Страница 333: ......