Installation (cont’d)
DANGER 
HAZARDOUS VOLTAGE
(Can Cause Severe Injury or Death)
Turn OFF all power before installation, adjustment, or removal of transfer switch or any of its components.
System Voltage Settings
Voltage / Frequency Selection Jumper 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.
240/480
JP1
JP2
A B 208/416
JP1
JP2
A B
50Hz
JP3
A B
120/380
JP1
JP2
A B 220/440
JP1
JP2
A B
60Hz
JP3
A B
Note: Do not change voltage Jumper positions
without consulting service or technical support.Figure 6 Arbitrarily changing voltage jumpers can adversely
affect ATS operation.
Type 1 |
| Type 2 |
| Type 3 |
|
| Type 4 |
| Frequency | |||
120V | 208 - 240VAC | 380 - 416VAC | 440 - 480VAC |
|
| |||||||
JP1 | JP2 |
| JP1 | JP2 |
| JP1 | JP2 |
| JP1 | JP2 |
| JP3 |
B | B | 208 | A | B | 380 | B | B | 440 | B | A | 50 Hz | A |
- | - | 220 | B | A | 416 | A | B | 480 | A | A | 60 Hz | B |
- | - | 240 | A | A | - | - | - | - | - | - | - | - |
Table 5
■ 6 | ZTX Operation and Maintenance Manual | GE Zenith Controls ■ |