WEG GRT7-TH4E, Installation, Operation And Maintenance Manual

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12 l Automatic Voltage Regulator
–
GRT7-TH4E / GRT7-TH4PE
4 TECHNICAL CHARACTERISTICS
Model
Characteristics
GRT7-TH4E 5A GRT7-TH4PE 7A
Nominal operating current
5A 7A
Peak Current
7A 10A
Analog input ±10Vdc
±10Vdc (±15%V
sen
)
Droop adjustment for parallel operation
Yes
UL certification
Yes
Sensing Input
160-300 Vac or 320-600 Vac (Vsen)
Power supply
160-300 Vac (1

or 2

)
Rectifier gain ratio
0,45
Output voltage¹
72-135 Vdc
Field resistance @ 20ºC
6 up to 50Ω
Static regulation
0,5%
Adjustable dynamic response
8 up to 500ms
Operating frequency
50Hz or 60Hz
Under Frequency protection (U/F)
Adjustable
Internal voltage adjustment
Adjustable via trimpot, for the entire voltage range
External voltage adjustment
-30% (Vsen) with potentiometer of 5 k
Ω
Operating Temperature
-40° to +60ºC
EMI suppression
EMI Filter
Approximate weight
547 g ±5%
Table 4.1: Technical characteristics
5 REGULATOR NAMEPLATE
The example above shows the main characteristics to be followed before installation.
NOTE
The identification nameplate is attached to the bottom of the regulator frame.
¹
For an input voltage of 160 Vac, the maximum output voltage obtained is 72 Vdc.
For 300 Vac of input voltage, the output voltage obtained is 135 Vdc, that is, the maximum dc output voltage is equal to
0.45 x the effective alternating voltage input.
Figure 5.1: Regulator Nameplate
Operating Frequency
Model
Power Supply
Excitation Voltage
Rated Current
Sensing Voltage