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

The selection range includes 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

Type Power (KW) Dimension(mm) Terminal Gross weigth (kg) Cable(m㎡) Combination
W D H H1 D1 W1
30 700 500 1100 1185 342 615 M6 73.4 16 12*2. 5kW
40 87 25 16*2. 5kW
50 1500 1585 100 20*2. 5kW
60 114 35 24*2. 5kW
70 1800 1885 127 28*2. 5kW
80 138 50 32*2. 5kW
90 2000 2085 155 36*2. 5kW
100 165 40*2. 5kW
200 1400 331 75 2*100kW

Matched braking selection

Inverter Braking Unit Braking resistor
Voltage(V) Motor(KW) Model Quantity(PCS) Recommed resistor value Resisitor specification Quantity(PCS)
220V 0.75KW Built-in 80W200Ω 80W200Ω 1
1.5KW 200W100Ω 200W100Ω
2.2KW 300W70Ω 300W70Ω
3.7KW 400W40Ω 400W40Ω
380V 0.75KW 80W750Ω 80W750Ω 1
1.5KW 200W400Ω 200W400Ω
2.2KW 300W250Ω 300W250Ω
3.7KW 400W150Ω 400W150Ω
5.5KW 600W100Ω 600W100Ω
7.5KW 800W75Ω 800W75Ω
11KW 1000W50Ω 1000W50Ω
15KW 1500W40Ω 1500W40Ω
18.5KW 4030 1 2500W35Ω 2500W35Ω
22KW 3000W27.2Ω 3000W27.2Ω
30KW 5000W19.2Ω 2500W38.4Ω 2
37KW 4045 6000W16Ω 2000W48Ω 3
45KW 2 9600W13.6Ω 2500W54.4Ω 4
55KW 4030 12000W10Ω 2000W60Ω 6
75KW 4045 19200W6.8Ω 2500W54.4Ω 8
Braking Resistor Box Quantity(PCS)
90KW 4030 3 9600W20Ω 3
100KW 4220 1
132-160KW 40KW3.4Ω 1
185-220KW 60KW3.2Ω
250-315KW 2 40KW4.5Ω 2
315-600KW 3 60KW3Ω 3

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.