KCB Series Thyristor Triggering Transformer

• Application: Power, Electronic, Instrument
• Phase: Single
• Core: Amorphous Alloy Transformer
• Model NO.: KCB Series
• Cooling Method: Dry-type Transformer
• Winding Type: Multi-winding Transformer
• Certification: ISO9001
• Usage: Single-phase Transformer, Combined Transformer
• Frequency Characteristics: Intermediate Frequency
• Shape of Core: OD
• Brand: Bingzi
• Trademark: Bingzi
• Origin: China
• HS Code: 8504319000

Product Description

1.Features 
 The printed circuit board is totally-encapsulated, allowing for direct welding and assembly.
 It has a high capability of mechanical and environmental isolation, is compact in structure, solid, vibration-proof, moisture-proof, and flame-resistant.
 It has high dielectric strength between coils.
 The ratio can be changed by customers to meet the requirement for triggering.
 It is able to match thyristors of all capacities.
 It is able to be used as common pulse transformers.

2.Applications
The triggering transformer is used with thyristor. It is commonly connected in between controlled triggering unit and controlling grid of thyristor to transfer triggering pulse in thyristor equipment; and acts as a reliable isolator between high and low voltages. KCB Series triggering transformers can be used for the following equipment:

 

 Voltage and speed controlled equipment;
 Electric welding machine;
 Elevator;
 Power supply with intermediate frequency;
 Rectifier;
 Inverter frequency converter;
 Self-controlled device;
 Other thyristor device.

Typical circuit in application is showed in the following Diagram:


Notes:1.R1 and D1 act as current continuing components.
D1 normally is 1N4007,R1 is selected between 1KΩ~2KΩ;
       2.D2,D3,R2 act as shaping components.
D2,D3 can be 1N4007,R2 is optional from a few tens ohms to several hundreds ohms.

    

No.	Model	Ratio	∫udt (μVS)				Withstand Voltage	Dimension	Weight (g)
			100HZ	3KHZ	7KHZ	10KHZ
1	KCB472/104B	1:1:1	400	320	280	200	3.1KV	18×17×14	8.5
2	KCB472/065B	2.3:1	700	650	450	300	3.1KV	18×17×14	8.5
3	KCB472/951A	2:1	480	400	360	280	3.1KV	18×17×14	8.5
4	KCB421/097B	1:1:1	-	500	-	-	3.1KV	20×20×14	12
5	KCB421/301A	3:1	-	1440	-	-	3.1KV	20×20×14	12
6	KCB473/065B	2.3:1	-	700	-	-	3.1KV	17.6×18×14.6	10
7	KCB473/951A	2:1	-	480	-	-	3.1KV	17.6×18×14.6	10
8	KCB473/301A	3:1	-	1200	-	-	3.1KV	17.6×18×14.6	10
9	KCB473/101A	1:1	-	400	-	-	3.1KV	17.6×18×14.6	10
10	KCB473/104B	1:1:1	-	400	-	-	3.1KV	17.6×18×14.6	10
11	KCB473/211B	2:1:1	-	750	-	-	3.1KV	17.6×18×14.6	10
12	KCB421/311B	3:1:1	-	1200	-	-	3.1KV	17.6×18×14.6	10
13	KCB419/301A	3:1	3000	2000	1200	960	5.0KV	27×22×20.5	34
14	KCB419/201ATM	2:1	23KHz: 375 240 200 200				3.5KV	27×22×20.5	30
15	KCB-419/101S	1:1	1KHz:1200 240 200 200				5KV	26×23.5×22	30
16	KCB419/111S	1:1:1	1KHz:1200 240 200 200				5KV	26×23.5×22	30
17	KCB419/201S	2:1	1KHz:2250 2000 1200 960				5KV	26×23.5×22	30
18	KCB419/211S	2:1:1	1KHz:2250				5KV	26×23.5×22	30
19	KCB419/301S	3:1	1KHz:3600				5KV	26×23.5×22	30
20	KCB419/311S	3:1:1	1KHz:3600				5KV	26×23.5×22	30
21	KCB420/101A	1:1	1KHz:800				5KV	21×19×17.5	35
22	KCB420/111B	1:1:1	1KHz:800				5.0KV	21×19×17.5	35
23	KCB420/201A	2:1	1KHz:1500				5.0KV	21×19×17.5	35
24	KCB420/211B	2:1:1	1KHz:1500				5.0KV	21×19×17.5	35
25	KCB420/301A	3:1	1KHz:2400				5.0KV	21×19×17.5	35
26	KCB420/311B	3:1:1	1KHz:2400				5.0KV	21×19×17.5	35
27	KCB418/311B	3:1:1	4000	2400	1500	1200	3.1KV	35×30×20.5	41
28	KCB418/422B	2:1:1	-	1200	-	-	5.0KV	35×30×20.5	41
29	KCB418/317A	1.5:1	560	500	400	320	7.0KV	35×30×20.5	40
30	KCB418/503A	1.5:1	-	-	450	-	10KV	35×30×20.5	40
31	KCB04/301AM1	3:1	-	-	1680	-	10KV	35×30×20.5	40
32	KCB418/569	5:1	50000Hz: 240				6.0KV	35×30×20.5	40
33	KCB674/864A	2:1	1600	1000	400	300	5.0KV	23×16×23	19
34	KCB6743A	1:1	1600	1000	400	300	6.0KV	23×16×23	19
35	KCB674/211B	2:1:1	3000	2100	1500	900	3.0KV	23×16×23	19
36	KCB674/211B1	2:1:1	3000	2100	1500	900	3.0KV	23×16×23	19
37	KCB-02A1	1:1	300	240	200	200	4.5KV	27×22×20.5	20
38	KCB-02B1	1:1:1	300	240	200	200	4.5KV	27×22×20.5	20
39	KCB-02C	1:1:1:1	300	240	200	200	4.5KV	27×22×20.5	21
40	KCB-04A1	1:1	1600	1200	800	400	4.5KV	35×30×20.5	39
41	KCB-04B1	1:1:1	1600	1200	800	400	4.5KV	35×30×20.5	40
42	KCB-04C	1:1:1:1	1600	1200	800	400	4.5KV	35×30×20.5	41
43	KCB-05A	1:1	2400	-	-	-	4.5KV	44×39×24	79
44	KCB-05A3	3:1	9.4KHz: 1200				8KV	44×39×24	79
45	KCB-05B	1:1:1	2400	-	-	-	4.5KV	44×39×24	81
46	KCB-05C	1:1:1:1	2400	-	-	-	4.5KV	44×39×24	83
47	KCB-06A	1:1	6480	-	-	-	3.1KV	48×43×30	116
48	KCB-06B	1:1:1	6480	-	-	-	3.1KV	48×43×30	118
49	KCB-06C	1:1:1:1	6480	-	-	-	3.1KV	48×43×30	120

No	Model	Ratio	∫udt (μVS)						Withstand Voltage	Dimension	Weight (g)
			100HZ	3KHZ		7KHZ	10KHZ
50	KCB2810G-1	1:1	-	1000		-	-		15KV	31×31×25.6	70
50	KCB2810G-2	2:1	-	-		1200	-		15KV	31×31×25.6	70
50	KCB2810G-3	3:1	-	-		1200	-		15KV	31×31×25.6	70
51	KCB2410G-1	1:1	3200	-		-	-		8KV	27×23.6×22	100
51	KCB2410G-2	2:1	6000	-		-	-		8KV	27×23.6×22	100
51	KCB2410G-3	3:1	9600	-		-	-		8KV	27×23.6×22	100
52	KCB0025/K101A	1:1	200Hz:8500						2.0KV	26×22.5×23	40
53	KCB01/K202A	1:1	22500		-	-		-	3.5KV	31×28×25	75
54	KCB01/K201D	2:1	8000		-	-		-	5.0KV	31×28×25	75
55	KCB015/K201B	2:1	300Hz:19200 -- --						8.0KV	30.5×27.5×31.25	100
56	KCB05/K101A	1:1	25000		-	-		-	8.3KV	45×37×33	195
57	KCB05/K201A	2:1	50000		-	-		-	8.3KV	45×37×33	195
58	SD-112AP	1:1:1	800		-	-		-	2.0 KV	21×20.8×17.5	19
59	JPC50/20	2.5:1	200Hz:960						6.0KV	26×22.5×23	40
60	NPC450/105	4.5:1	300Hz:24000						6.0KV	30.5×27.5×31.25	195

4.Guide for use:
 First of all, the needed dielectric strength Vp is determined according to the system's working voltage V₀ (effective value). It can be selected with the recommended values listed in Table 1:
 Table 1:

Working Voltage V0	220V	380V	500V	800V	1100V
Dielectricity Strength Vp	1.9KV	3.1KV	4.5KV	6KV	8.3KV

    
 The model can be selected in accordance with product of volt-microsecond (∫udt ) and frequency of triggering pulse. There is a rule for the selection, which is referred to that the known product of volt-microsecond of triggering pulse should be equal to or less than the rated that of KCB triggering transformers in related range of frequencies;

(a) For users who use single pulse of 50HZ as triggering signal: the type can be determined with the known product of volt-microsecond by following the rule mentioned above.
For example, if it is known that the triggering pulse voltage is 8V, the pulse width is 250μs, the product of volt-microsecond then is 2000μVs(∫udt=8×250=2000μVs), the KCB-05 should be selected.

(b) For users who use pulse train (modulated pulse) as triggering signal: the selection should be made according to the parameters of modulated pulse.
For example, if it is known that the frequency of modulated pulse is 7KHz, the pulse amplitude is 10V, the product of volt-microsecond is then 800μVs (∫udt=10×80=800μVs), the KCB-04 should be selected when f_p =7KHz.

(c) For users who don't know the parameters of triggering pulse: recommended model can be chosen from the table 2 as follows.
Table 2:

Thyristor capacity(A)	1-30	30-90	100-500	500-1000
Recommended Model	KCB-02	KCB472/104B KCB472/065B KCB472/951A	KCB-04 KCB674/864A KCB6743A KCB-0025 KCB-01	KCB418/311B KCB419/301A KCB674/211B KCB-05 KCB-06

   
Note: Recommended model is only for reference. A triggering transformer with the bigger ∫udt should be selected as a general rule to make allowance.
  
5. Triggering Pulse Mode
(1) Single Pulse:
(2) Pulse Train


6. Outline, Installation Dimension, Coil Diagram and Detailed Technical Parameters
 

1. Instructions:

The parameters in the following tables are the typical values given at room temperature.

The meaning of the parameters:

u-transformer ratio =:::

V_P -effective voltage value of testing dielectric strength imposed on between coils, its duration is 60 seconds.

F_P-testing pulse frequency (Tp: cycle time).100Hz is referred to single pulse, the others referred to pulse train, assuming that width of pulse train (equivalent width) is td=2ms

∫udt-rated product of volt-microsecond≈V1·t_n , which basically dose not change in certain range of frequencies

V₁-input pulse amplitude (primary pulse voltage)

tn-rated pulse width transferred under the related V1 and fp

V₂-output pulse amplitude (secondary pulse voltage)