Steel Tube Resistor Box is mainly assembled by electrically heated tube resistors, suitable for high-power, high-current braking equipment, rail transportation, new energy, laboratory testing equipment, elevators, cranes and other energy dissipation braking circuit of invertors.

Product Features
1. Rated power range: 1KW-10KW
2. Rated voltage range: ≤1.2KV
3. Resistance range: 2R-1KR
4. Dielectric strength: AC2.5KV 50Hz/5s
5. IP Protection: IP20
6. Vibration: 0.5g
7. Temperature coefficient: ≤400ppm/°C
8. Element material: 0Cr25Al5
9. Advantages: applicable to relatively harsh environment

Product Size

Type	Rated power(KW)	D	W	H	D1	D2	W1	H1	OB	Resistor range	Cable (mm2)	Braking power in different braking time of each 120s(braking period)
												12s	24s	36s	48s
RTRB	1.5	475	250	90	440	420	200	80	7×14	3Ω-500Ω	4	17KW	8KW	5KW	4KW
	3	475	250	125	440	420	200	115	7×14	3Ω-500Ω	4	33KW	15KW	10KW	8KW
	4.5	475	250	160	440	420	200	150	7×14	3Ω-500Ω	4	50KW	23KW	15KW	12KW
	6	475	250	195	440	420	200	185	7×14	2Ω-1KΩ	6	66KW	30KW	20KW	15KW
	8	475	250	230	440	420	200	220	7×14	2Ω-1KΩ	6	77KW	39KW	26KW	20KW
	10	475	250	265	440	420	200	255	7×14	2Ω-1KΩ	10	97KW	49KW	33KW	24KW

Mechanical and Electrical Properties

Property	Inspection method	Performance requirements	Test method
Constant humidity-heat	96hTemperature 40 °C , RH(90-95)% 96h	R≤±(5%±0.05Ω)	GB5729.2.24
Temperature change	-55 ° C to +55 °C , 3 Cycles	R≤±(2%±0.05Ω)	GB5729.4.19
Transient overload	10 Pr 5S 10 Time Pr 5s	No visible destruction R≤±(1%±0.05Ω)	GB5729.4.13
Insulation resistance	DC 1000V	R≥100MΩ	GB5729.4.6
Dielectric strength	AC3000V 50Hz 5s	Free of breakage or flying arc	GB5729.4.7
Life	25 ° C Ur 1000h	R≤20%
Terminal strength	45N 30S	Free of visible destruction	GB5729.4.16
Vibration resistance	f:5-200HZ a=1g X.Y.Z every 2h	R≤±(1%R+0.05Ω)Free of visible destruction	GB5729.4.22

Product Identification Code

RTRB	2K00	0032	9999M	K
Product Type	Rated Power 50W-2000W 0020-20W 2K00-2KW	Resistance Value(ohm)(Ω)indicates resistance value in units of ohms 0R08-0.08Ω/ 0032-32Ω/1K00-1KΩ	Connection M= Terminal		Resistance Tolerance H=±3% K=±10% J=±5%