PRU Power Resistor Unit

Description

Overview

The PRU power resistor unit is a cabinet of wirewound elements for high-power inverter braking, lifting equipment, elevators and simulated load tests.

Technical scope

Captured data specifies 30-200kW ratings, operation below 1200V, 0.5kR-100kR resistance and IP00 or IP23 configurations. Select the unit by braking power, resistance, duty and matched inverter or braking-unit requirements.

Selection and technical data

Model and dimensional data

TypePower (KW)Dimension(mm)TerminalGross weigth (kg)Cable(m㎡)Combination
WDHH1D1W1
3070050011001185342615M673.41612*2. 5kW
4070050011001185342615M6872516*2. 5kW
5070050015001585342615M61002520*2. 5kW
6070050015001585342615M61143524*2. 5kW
7070050018001885342615M61273528*2. 5kW
8070050018001885342615M61385032*2. 5kW
9070050020002085342615M61555036*2. 5kW
10070050020002085342615M61655040*2. 5kW
200140050020002085342615M6331752*100kW

Matched braking selection

InverterBraking UnitBraking resistor
Voltage(V)Motor(KW)ModelQuantity(PCS)Recommed resistor valueResisitor specificationQuantity(PCS)
220V0.75KWBuilt-in80W200Ω80W200Ω1
1.5KWBuilt-in200W100Ω200W100Ω1
2.2KWBuilt-in300W70Ω300W70Ω1
3.7KWBuilt-in400W40Ω400W40Ω1
380V0.75KWBuilt-in80W750Ω80W750Ω1
1.5KWBuilt-in200W400Ω200W400Ω1
2.2KWBuilt-in300W250Ω300W250Ω1
3.7KWBuilt-in400W150Ω400W150Ω1
5.5KWBuilt-in600W100Ω600W100Ω1
7.5KWBuilt-in800W75Ω800W75Ω1
11KWBuilt-in1000W50Ω1000W50Ω1
15KWBuilt-in1500W40Ω1500W40Ω1
18.5KW403012500W35Ω2500W35Ω1
22KW403013000W27.2Ω3000W27.2Ω1
30KW403015000W19.2Ω2500W38.4Ω2
37KW404516000W16Ω2000W48Ω3
45KW404529600W13.6Ω2500W54.4Ω4
55KW4030212000W10Ω2000W60Ω6
75KW4045219200W6.8Ω2500W54.4Ω8
Braking Resistor BoxQuantity(PCS)
90KW403039600W20Ω3
100KW422019600W20Ω3
132-160KW4220140KW3.4Ω1
185-220KW4220160KW3.2Ω1
250-315KW4220240KW4.5Ω2
315-600KW4220360KW3Ω3

Drawings and connection details

PRU resistor cabinet outline, mounting and ventilation dimensions.
PRU resistor cabinet outline, mounting and ventilation dimensions.
Inverter braking-system wiring with braking unit and resistor connections.
Inverter braking-system wiring with braking unit and resistor connections.