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Example 2 Thyro-P 3P400-110 H
• the power controller is a 3-phase power controller of Thyro-P 3P 400-110H with 110A type
current
• three similar current transformers with transformation ratio of tr = 100:1
The calculation and selection of the three similar load resistor has to be done according to
example 1.
After selecting the resistors, which value must be between 0,818 Ω and 1 Ω, the the value has to
be entered with Thyro-Tool Family or LBA-2 in parameter U_Load resistor.
4.12 VOLTAGE TRANSFORMER
As standard, each power section is fitted with a voltage transformer for recording the load voltage.
It is possible to measure voltages of up to 690V. The voltage transformers are wired to the control
device A70 by the works.
LOAD VOLTAGE TERMINAL X7.2 TERMINAL X7.1
phase L1 .15 .16
phase L2 .25 .26
phase L3 .35 .36
TAB. 12 VOLTAGE TRANSFORMER
In case of the power controller Thyro-P 2P, the voltage transformers output the voltages L1-L2 and
L3-L1. To achieve a good resolution of the voltage measurement, 3 measuring ranges are provided.
Selection of the ranges is performed by means of 4-pin bars, which have been set to the Power
Controller type voltage by the works. The pin bars are found on the control device A70 above the
terminal X7.
MAINS JUMPERS MAX.
VOLTAGE X501, X502, X503 MEASURING
230V 1 - 2 253V
400V 2 - 3 440V
500V respectively 690V 3 - 4 760V
TAB. 13 VOLTAGE MEASUREMENT JUMPER
If the jumpers are changed, then a change of parameters is required.
Hardware parameters
Type voltage U_TYP
U rms max UEMA
X501-3,1-2,2-3,3-4 TYP-BEREICH
Mains voltage U_NETZ_ANW
(Thyro-Tool Family)
Voltage readings of Thyro-P is equipped with 3 measurement ranges:
1. range: max. 15V (with internal transformer 230V)
2. range: max. 28V (with internal transformer 400V)
3. range: max. 45V (with internal transformer 500V / 690V)
The correct input voltage range (jumper) has to be selected when using an external voltage trans-
former.
The chosen input voltage range has to be set by Thyro-Tool Family or LBA-2 (Parameter: Voltage
range).