Schneider Electric 58 TRX manual Current/Time Characteristics for DB Resistor Assemblies

Altivar® 58 TRX AC Drives

Dynamic Braking Resistor Kits

Current/Time Characteristics for DB Resistor Assemblies

The figure below shows the allowable GV2 trip times as a function of current setting multiples with the dynamic braking resistor assembly located in a 40 °C (104 °F) ambient temperature environment. See page 35 for an example of how to calculate resistor size.

10000	DynBrkCurves.eps
1000
100	Cold State
10
Time(s)
1

Hot State

0.1

0.01

0.001

1	1.5	10	100
		Multiples of current setting (lr)

The kits in the following table use the thermal protection of a GV2 manual starter and have a Type 1 rating per UL 50. The insulation system is suitable for use in a Pollution Degree 3 environment (refer to NEMA ICS-1 Annex A). The package is UL/CSA marked.

DB Kits Technical Specifications

Dynamic Braking Kit for:	Ohmic Value	Continuous Current Rating	Average Power	Catalog Number
	(Rdb)	of Assembly◆ (Ir)	(W)
ATV58•U09M2▼, ATV58•U18M2▼,
ATV58•U18N4, ATV58•U29N4,	120 Ω	1.0 A	120	VW3A66711
ATV58•U41N4, ATV58•U54N4,
ATV58•U72N4
ATV58•U29M2, ATV58•U41M2,	56 Ω	1.45 A	118	VW3A66712
ATV58•U90N4, ATV58•D12N4
ATV58•U54M2, ATV58•U72M2,	28 Ω	2.7 A	204	VW3A66713
ATV58•D16N4, ATV58•D23N4
ATV58•U90M2, ATV58•D12M2,	14 Ω
ATV58•D28N4, ATV58•D33N4,		3.8 A	202	VW3A66714
ATV58•D46N4
ATV58•D16M2, ATV58•D23M2,	10 Ω	10.0 A	1000	VW3A66715
ATV58•D54N4
ATV58•D28M2, ATV58•D33M2,	5 Ω
ATV58•D46M2, ATV58•D64N4,		14.0 A	980	VW3A66716
ATV58•D79N4

◆Current rating of resistor assembly is calculated based on setting of internal overload protective device in assembly, overload setting based on enclosure overtemperature protection, and resistor overload versus time characteristics. Resistors are rated for stopping six times rotor inertia of four- pole motor with drive at current limit. Motor inertias are based on NEMA MG-1 14.45.

▼Requires external braking transistor, VW3A58701.

37

09/2003 © 2000–2003 Schneider Electric All Rights Reserved