Resistor Designs

RESISTOR DESIGNS

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227 N. Freedom
Alliance, Ohio 44601, U.S.A.
Phone: 330-821-7667
Fax: 330-829-3175
info@filnor.com

Filnor, Inc. is the reliability leader in the power resistor industry. We provide complete technical assistance in order to meet your specifications. Please contact Filnor, Inc. to learn more about our power resistor designs.

STAINLESS STEEL GRID RESISTORS CLASS 9857

• Reliable stainless steel resistor elements and terminals
• All units are triple insulated for 1000V AC or DC
• Standard grid resistors in stock to reduce costly downtime
• Stable resistance over wide temperature ranges
• High wattage saves space, weight and cost
• Standard 26.5" dimensions for quick replacement of other brands
• Custom grid resistors available

power resistor designs

Replacement Grid Resistors of all Major Name Brands
Approximate Dimensions for Standard Resistor Bank

Also available in 12”, 18”, 22” & 25.5” banks to meet your requirements. Consult factory for technical data.

STANDARD GRID RESISTORS

high current grid resistor

These stamped grid, chromium alloy stainless steel grid resistors range from 27 to 91 amps. Listed are our standard design banks, but various grids may be combined to design a resistor to fill an application at absolute minimum cost. The configuration is most commonly found in lower horsepower motor acceleration resistors and magnet controllers.

HEAVY DUTY GRID RESISTORS

high current strip resistors

These stamped grid, chromium alloy stainless steel strip resistors range from 100 to 165 amps. The grids are welded together at their junctions which produces a continuous current carrying grid resistor. They are ideal for the medium and higher horsepower motor applications.

HIGH CURRENT STRIP RESISTORS

grid resister

These continuous stainless steel high current strip resistors range from 180 to 625 amps. The resistor element is formed by folding the stainless steel back and forth to produce a continuous, evenly spaced bank with heavy stainless steel terminals.

Ordering Information Required

SPECIAL RESISTORS

• Resistance between terminals
• Continuous ampere rating required between terminals
• Terminal designations
• Size requirements

Optional Equipment & Services

• Complete stainless steel resistors (end frames, racks, and hardware).

• Interconnecting jumper installation at our factory.

• All connections wired to the bottom space of the rack using 200ºC rated wire or copper bus.

Enclosure for Standard Grid Resistor

• Screened for indoor applications

• Louvered for outdoor applications

• Forged eyebolts for easy hoisting

• Removable front and rear louvered covers allow easy access for connection and inspection

• Corrosion resistant nameplate provides complete ratings and manufacturer’s information

• Heavy powder coat finish provides maximum protection

• Options: stainless steel, aluminum, mill galvanized, hot dipped galvanized, custom paint finishes available.

	Silicon Bonded Mica Insulating Washers Gives a higher temperature rating than epoxy bonded.
	End Frame Insulator Molded fiberglass material is used to insulate the connection between the support rods and the end frame. This allows for the grid structure to be held securely together and double insulated to ground.
	Support Rods Threaded support rods are insulated with silicon bonded mica tubing to provide primary protection from grounding/shorting out.
	End Frames Filnor endframes are designed so that the resistors can be easily mounted in racks or stacked.
	Stainless Steel Grid Element Filnor grid elements are stamped out in our factory from stainless chromium alloy steel. Filnor standard lower capacity elements are welded together to allow for a continuous flow of current up to 165 amperes. Filnor standard high capacity grids are manufactured with one continuous ribbon or strip element between 180 and 525 amperes continuous.

FILNOR STANDARD GRID RESISTORS

Part Number	Continuous Ampere Capacity	Resistance Ohms @25º Total Bank	# Taps With End Terminal	Quick Quote
FH27	27	9.4	13
FH30	30	7.87	11
FH37	37	6.09	11
FH41	41	5.15	11
FH46	46	3.64	10
FH50	50	2.94	11
FH57	57	2.02	11
FH63	63	1.82	10
FH73	73	1.22	10
FH80	80	1.01	8
FH85	85	.795	10
FH91	91	.700	9
FT100	100	.608	10
FT110	110	.468	10
FT120	120	.421	10
FT135	135	.351	8
FT150	150	.270	9
FT165	165	.240	8
FHC180	180	.226	9
FHC200	200	.209	9
FHC225	225	.184	9
FHC260	260	.164	9
FHC300	300	.132	9
FHC350	350	.096	9
FHC400	400	.076	8
FHC450	450	.056	8
FHC525	525	.039	8

ENCLOSURES & RACKS

Banks	G" Screened	H" Louvered
2	23 1/8	27 1/8
3	32 1/8	36 1/8
4	41 1/8	45 1/8
5	50 1/8	54 1/8
6	59 1/8	63 1/8
7	68 1/8	72 1/8
8	77 1/8	81 1/8
9	86 1/8	90 1/8

Box assemblies are available both louvered or screened.

LS Cover	A"	B"	C"
1 Resistor	26.5	25.25	7.75
2 Resistors	26.5	25.25	15.5
3 Resistors	26.5	25.25	23.25
4 Resistors	26.5	25.25	31

* Add 3/4" for covers

power resistor design

LS Covers

LS Covers are an economical solution for packaging your resistor requirements. They are available up to 4 resistor banks high. Consult factory for technical data.

power resistor designs

Enclosure for Standard Grid Resistor

• Screened for indoor applications.
• Louvered for outdoor applications.
• Forged eyebolts for easy hoisting.
• Removable front and rear louvered covers allow easy access for connection and inspection.
• Corrosion resistant nameplate provides complete ratings and manufacturer’s information.
• Heavy powder coat finish provides maximum protection.
• Options: stainless steel, aluminum, mill galvanized, hot dipped galvanized, custom paint finishes available.

power resistor enclosure

HELICOIL WIREWOUND RESISTOR CLASS 9855

APPLICATIONS INCLUDING

• Dynamic Braking Resistors for AC or DC drives
• Neutral Grounding Resistors
• Starting and speed regulation uses
• Ballast resistors and heaters
• Load Banks

Helicoil Wirewound Resistor Specifications

The maximum power ratings specified are for resistors mounted in an open air atmosphere. If units are to be mounted closer together or in a restricted ventilation condition, the maximum power rating should be derated as follows. Resistors in a well ventilated enclosure should be rated at approximately 82% and in an unventilated enclosure at approximately 67% of their maximum power rating.

helicoil wirewound diagram

Choose "Get a Quote" to receive a quote on our helicoil wirewound resistors or other resistor applications. Or see our Tech Center for more information on helicoil wirewound designs.

helicoil wirewound resister

Consult Filnor for assistance with your application.

FILNOR STANDARD HELICOIL RESISTORS

Part Number	Continuous Amperes	Ohms	Watts	Class 150 15 sec on 30 sec off	Class 160 15 sec on 30 sec off	Quick Quote
9855-0.50	27	0.50	365	49.0	45.0
9855-0.70	20	0.70	283	39.0	35.0
9855-1.0	17	1	289	32.0	30.0
9855-1.4	14	1.4	294	26.0	23.0
9855-2.0	13	2.0	338	24.0	20.0
9855-2.6	11	2.6	344	20.0	18.0
9855-3.5	10	3.5	386	17.2	16.0
9855-4.8	9	4.8	406	14.5	13.5
9855-5.0	8	5.0	328	14.0	12.5
9855-5.5	7	5.5	343	12.5	12.2
9855-6.0	7	6.0	347	13.0	12.0
9855-6.5	8	6.5	426	11.7	11.2
9855-8.6	7	8.6	421	10.2	9.5
9855-11.0	6	11.0	409	9.5	8.7
9855-12.0	5	12.0	403	9.0	8.5
9855-15.0	5	15.0	421	7.7	7.3
9855-20.0	4	20.0	423	6.6	6.3
9855-27.0	3	27.0	350	5.5	5.0
9855-36.0	3	36.0	324	4.1	4.0
9855-45.0	2	45.0	218	3.2	3.0
9855-62.0	2	62.0	256	2.7	2.6
9855-81.0	1	81.0	234	2.2	2.1

SMOOTH WIREWOUND RESISTOR CLASS 9856

APPLICATIONS INCLUDE

• Dynamic Braking Resistor for AC or DC drives
• Neutral Grounding Resistors
• Starting and speed regulation uses
• Ballast resistors and heaters
• Load Banks

smooth wirewound resister

Smooth Wirewound Resistor Specifications

The maximum power ratings specified are for resistors mounted in an open air atmosphere. If units are to be mounted closer together or in a restricted ventilation condition, the maximum power rating should be derated as follows. Resistors in a well ventilated enclosure should be rated at approximately 82% and in an unventilated enclosure at approximately 67% of their maximum power rating.

grid resistor diagram

FILNOR STANDARD SMOOTH WIREWOUND RESISTORS

Part Number	Continuous Amperes	Ohms	Watts	Quick Quote
9856-A 1	8	5.00	320
9856-A 2	7.2	6.27	325
9856-A 3	6.3	7.77	308
9856-A 4	5.64	9.81	312
9856-A 5	5	12.21	305
9856-A 6	4.5	15.33	310
9856-A 7	4	19.29	309
9856-A 8	3.56	24.28	308
9856-A 9	3.18	30.58	309
9856-A 10	2.8	38.46	302
9856-A 11	2.51	48.48	305
9856-A 12	2.25	61.05	309
9856-A 13	2	76.68	307
9856-A 14	1.77	96.72	303
9856-A 15	1.59	121.70	308
9856-A 16	1.4	153.00	300
9856-A 17	1.25	193.80	303
9856-A 18	1.12	244.20	306
9856-A 19	1	307.90	308
9856-A 20	1.85	87.97	301
9856-A 21	1.65	110.90	302
9856-A 22	1.48	139.70	306
9856-A 23	1.32	175.40	306
9856-A 24	1.17	221.30	303
9856-A 25	1.05	278.70	307
9856-A 26	0.92	350..20	296
9856-A 27	5.3	11.43	321
9856-A 28	4.7	14.38	318
9856-A 29	4.15	17.85	307
9856-A 30	3.7	22.45	307
9856-A 31	3.34	27.95	312
9856-A 32	2.97	35.07	309
9856-A 33	2.65	44.10	310
9856-A 34	2.35	55.58	307
9856-A 35	2.1	69.97	309
9856-B 4	24	0.52	300
9856-B 5	21.2	0.65	293
9856-B 6	19	0.82	296
9856-B 7	17	1.03	298
9856-B 8	15	1.29	290
9856-B 9	13.3	1.62	287
9856-B 10	11.9	2.04	289
9856-B 11	10.6	2.57	289
9856-B 12	9.35	3.21	281
9856-B 13	8.33	4.07	282
9856-B 14	7.49	5.10	286
9856-B 15	6.66	6.43	285
9856-B 16	5.95	8.09	286
9856-B 10	11.9	2.04	289
9856-B 20	15.7	1.16	286
9856-B 21	14	1.46	286
9856-B 22	12.5	1.83	286
9856-B 23	11.1	2.35	290
9856-B 24	9.9	2.96	290
9856-B 25	8.8	3.70	287
9856-B 26	7.6	4.66	269
9856-B 27	6.8	5.88	272
9856-B 29	5.3	9.30	261