Jumper Positions - GE Zenith Controls ZTX Operation And Maintenance Manual

Installation
Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components.
System Voltage Settings
ZTX controller boards are preconfigured to the system
voltages specified at the time of order. Exact system volt-
ages are normally set at the factory, however, depend-
ing on the actual application and system nominal volt-
age, ZTX control boards are capable of being adjusted
slightly, to meet different source characteristics for
voltage as well as frequency. (See Table 5)
Figure 6 (on right) shows the variations each of the 3
basic types of controllers can be adjusted to within its
nominal voltage range. Position Jumpers JP1 and JP2,
as needed for voltage. Position JP3 for frequency.
As with any other Jumper setting, always remove power
completely from the controller before making changes.
Note: Do not change voltage Jumper positions
without consulting service or technical support.
Arbitrarily changing voltage jumpers can adversely
affect ATS operation.
Type 1
120V
JP1 JP2
B B 208
- - 220
- - 240
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6
ZTX Operation and Maintenance Manual (72 R -1000)
(cont'd)
DANGER
HAZARDOUS VOLTAGE
(Can Cause Severe Injury or Death)
Type 2
208 - 240VAC 380 - 416VAC
JP1 JP2
A B 380
B A 416
A A -
Voltage / Frequency Selection Jumper Settings
240/480
JP1
JP2
A
208/416
JP1
JP2
A
50Hz
JP3
A
Type 3 Type 4
440 - 480VAC
JP1 JP2 JP1 JP2
B B 440 B
A B 480 A
- - - -
120/380
JP1
JP2
B A
220/440
JP1
JP2
B
A
60Hz
JP3
B A
Figure 6
Frequency
JP3
A 50 Hz A
A 60 Hz B
- - -
GE Zenith Controls
B
B
B
Table 5
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