Oval Edge Wirewound High Current Resistors, Power Resistors (DOE)

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Power Oval Edge-Wound High Current Resistors (DOE)

High current oval edge wirewound resistor (DOE) is the best choice
when conditions demand top-notch performance.

DeMint DOE Series are commonly used as a dynamic braking resistor on Transit applications. Built to perform in rugged environments, they feature corrosion resistant stainless steel insulator supports, solid nickel terminals, and special electroless nickel-plated solid copper terminal supports.

The resistance element is made of a stainless steel resistance alloy. Terminals are welded or silver brazed to the oval, spiral edge-wound resistance element. Toothed ceramic insulators isolate the resistance element from the center support. Ceramic end bushings insulate the center support from the mountings.

Order individual replacement units or entire grids with various mounting configurations.

Downloads complete PDF version Power Oval Edge Wirewound High Current Resistor (DOE). Contact us with your specific needs.

Options :

Terminal blocks, thermal switches, conduit knockouts, fusing, fans,
and other customer specified requirements are available on request.

Features :

Power rating from 525W to 1750W
Resistance nominal tolerance ±10%(K)
Resistance value range 0.0426Ω to 6.13Ω,
suitable for high current applications

Applications :

Power Industrial Machinery Resistors.
Dynamic Braking Resistors, Load Banks, Motor Starting Resistor.
Plugging Resistor, Power Load Measurements, Electric Distribution Resistors.
Instrumentation, Automation Control Installations.

Electrical Characteristics (DOE)
Test Item	Specification	Test Methods
Ambient Temperatures	Ambient Temperature: -55°C ~350°C. Derated current rating: 95% for 50°C ambient, 90% for 75°C ambient, 85% for 100°C ambient, 10% for 350°C ambient.	Standard ratings are based on maximum ambient temperatures of 40°C.
Continuous current ratings and temperatures Rise	375°C Max.	The rating of continuous current is based on a 375°C temperature rise at ambient temperatures of 40°C.
Resistance tolerance	Resistance Nominal Tolerance ±10%(K) for all units; as low as ±3% if required.	JIS-C-5202 5-1
Thermal Shock	Δ≤±(2%R+0.1Ω)	JIS-C-5202 7.3, Room temp 30 minutes, -55°C 15 minutes.
Terminal strength	Δ≤±(2%R+0.1Ω)	JIS-C-5202 6.1, 45N, 30S
Short-term Overload	Δ≤±(2%R+0.1Ω)	JIS-C-5202 5.5, 10P_R, 5S.

Resistance and resistance tolerance were tested in-house at room temperature (25°C) with micro resistance meter.
Ambient Temperature: refers to the temperature inside the subject and around the specimen, not to the air-temperature outside the subject.

Technical Specification (DOE)
Item	Specification
Working Voltage	Limited to 550 volts if mounting is grounded. Special higher voltage mounting is available.
Terminals	Standard terminals have 5/16 stainless hardware for ring lug connections. Brass tags can be placed at connection points for identification.
Mounting	Resistors can be mounted in grid arrays of 1x2 to 4x4. All resistors in one grid must be the same length. Frames construction is heavy gauge zinc plated steel.

Nominal Current & Resistance Oval Edgewound Resistor (DOE)
525W		850W		1200W		1450W		1750W
Amps	Ohms	Amps	Ohms	Amps	Ohms	Amps	Ohms	Amps	Ohms
-	-	-	-	146	0.055	-	-	146	0.082
-	-	-	-	135	0.0677	-	-	-	-
-	-	-	-	124	0.080	-	-	-	-
-	-	-	-	116	0.0915	-	-	116	0.142
113	0.0426	113	0.071	113	0.092	113	0.121	113	0.142
103	0.0497	103	0.0781	103	0.107	103	0.140	103	0.163
-	-	100	0.080	100	0.122	-	-	100	0.185
94	0.0581	94	0.0913	94	0.125	94	0.158	94	0.191
86	0.0747	86	0.116	86	0.158	86	0.199	86	0.241
85	0.0671	85	0.116	85	0.159	85	0.201	85	0.244
80	0.0864	80	0.134	80	0.182	80	0.230	80	0.278
79	0.0781	79	0.135	79	0.185	79	0.234	79	0.284
74	0.0984	74	0.156	74	0.213	74	0.279	74	0.336
70	0.110	70	0.171	70	0.232	70	0.293	70	0.354
69	0.115	69	0.182	69	0.249	69	0.326	69	0.394
65	0.128	65	0.199	65	0.270	65	0.341	65	0.412
62	0.146	62	0.220	62	0.305	62	0.390	62	0.463
61	0.148	61	0.230	61	0.312	61	0.394	61	0.476
56	0.170	56	0.270	56	0.369	56	0.483	56	0.568
-	-	54	0.269	54	0.378	-	-	54	0.573
51	0.213	51	0.327	51	0.440	51	0.554	51	0.667
47	0.249	47	0.382	47	0.514	47	0.647	47	0.780
43	0.299	43	0.465	43	0.631	43	0.796	43	0.963
39	0.364	39	0.566	39	0.768	39	0.970	39	1.170
35	0.465	35	0.707	35	0.909	35	1.190	35	1.390
32	0.544	32	0.846	32	1.148	32	1.450	32	1.750
30	0.695	30	1.057	30	1.360	30	1.780	30	2.080
26	0.860	26	1.310	26	1.680	26	2.210	26	2.580
25	1.060	25	1.620	25	2.080	25	2.730	25	3.190
22	1.200	22	1.830	22	2.450	22	3.070	22	3.700
18	2.040	18	3.110	18	3.990	18	5.240	18	6.130
Call or e-mail for information on mounting, grid configurations, unusual service conditions, or special requests. The rating of continuous current (Amps) is based on a 375°C temperature rise. Power: varies. •Tolerance: ± 10 %.

Power Oval Edge-Wound High Current Resistors (DOE)

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