TECHNICAL TIPS

Electrical Safety

We are proud of our long history in electrical safety, and the experience that we offer our customers. When we inspect your equipment and apply our mark of approval, you can rest assured that your equipment is compliant with all the applicable electrical codes and standards.

The following collection of reference material is intended to give you a better understanding of some of the inspection procedures that might be applicable to your equipment. If you have any questions or would like more information, feel free to call or email us and we will be sure to provide you with Service Beyond Standard!

Dielectric Strength Test

Flame Test

Strain Relief Test

FULL LOAD CURRENTS THREE PHASE TRANSFORMERS VOLTAGE (Line to Line)
KVA Rating	208	240	480	600	2400	4160
3	8.3	7.2	3.6	2.9	0.72	0.42
6	16.7	14.4	7.2	5.8	1.44	0.83
9	25	21.7	10.8	8.7	2.17	1.25
15	41.6	36	18	14.4	3.6	2.08
30	83	72	36	29	7.2	4.16
45	125	108	54	43	10.8	6.25
75	208	180	90	72	18	10.4
112.5	312	271	135	108	27	16
150	416	361	180	144	36	20.8
225	625	541	271	217	54	31.2
300	833	722	361	289	72	41.6
500	1388	1203	601	481	120	69.4
750	2082	1804	902	722	180	104

TRANSFORMER RATING FOR MOTOR H.P
Motor HP	.5	1	1.5	2	3	5	7.5	10	15	20	25
1 PH kVA	2	3	3	3	5	7.5	10	15	25	25	37.5
3 PH kVA		3	3	3	5	5	9	15	15	30	20

FOR OTHER KVA RAINGS OR VOLTAGES
Three Phase		Single Phase
Amperes=	kVA x 10 Volts x 1.73	Amperes=	kVA x 1000 Volts

FULL LOAD CURRENTS THREE PHASE TRANSFORMERS VOLTAGE
kVA Rating	120	208	240	480	600	2400
1	8.33	4.8	4.17	2.08	1.7	0.42
3	25	14.4	12.5	6.25	5.0	1.25
5	42	24	20.8	10.4	8.3	2.08
7.5	62.5	36.1	31.3	15.6	12.5	3.13
10	83.3	48	41.7	20.8	16.7	4.17
15	125	72	62.5	31.3	25.0	3.25
25	208	120	104	52	41.7	10.4
37.5	313	180	156	78	62.5	15.6
50	417	240	208	104	83.3	20.8
75	625	361	313	156	125	31.3
100	833	481	417	208	167	41.7
125	1042	601	521	260	208	52
167	1392	803	696	348	278	70
200	1667	962	833	417	333	83
250	2083	1202	1042	521	417	104
333	2775	1601	1388	694	555	139
500	4167	2404	2083	1042	833	208

field.evaluation@esafe.org