lightning-resistant transformer/STC type

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Product Details

Specification Parameters

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The lightning-resistant transformer is used for surge protection of power supply department of low-voltage distribution wire equipment such as equipment room,

wireless relay station and mobile phone base station.

It consists of a high-voltage insulated transformer with electrostatic shielding (ground protection) and a power supply SPD (line protection), which is used to exclude

abnormal voltages caused by induced lightning surges and geopotential rise.

Appearance size drawing

Circuit diagram

Model identification

Note 1: Non-standard capacity products can also be made.

Note 2: Can also make insulation type H products.

※ Example of AC withstand voltage symbol 1.

Item			Performance			Remark
Input output voltage			AC100V、AC200V、AC400V、AC100/200V
Type of connection line (number of phases)			Single-phase(2-wire,3-wire),three-phase 3-wire (Delta connection)
capacity		monophase	0.5～30kVA			Note 1
		Three phase	5～100kA
Frequency of use			50Hz／60Hz
Insulation resistance			DC500M时100MΩ以上
Withstand voltage	Between input and output		AC10kV（1min） strike （1.2/50μs）30kV
	Between input and grounding
	Between output and grounding		AC3kV（1min）
Voltage variation rate and efficiency	monophase	capacity	1kVAbelow	2kVA	3kVA above
		Electrical voltage change rate	5％below	4％below	3％below
		efficiency	93％ above		95％ above
	Three phase	capacity	7.5kVA below	10～30kVA	40kVA above
		Electrical voltage change rate	4％below	3％below	3％below
		efficiency	94％ above	95％ above	96％ above
Type of insulation		monophase	B class			Note 2
		Three phase	B class
Temperature rise limit			75℃ below			Ambient temperature 40℃ Resistance measurement
Surge transfer rate			1/1,000 below

Size / Mass (single phase)

Note: The size of non-standard type may differ from this size.

Capacity	Size（mm）					Mass（kg）
（kVA）	H	W	D	A	B	Mass（kg）
0.5	400	300	300	260	260	30
1	400	300	300	260	260	50
2	450	350	400	360	310	60
3	450	350	400	360	310	70
5	650	500	500	400	460	130
7.5	650	500	500	400	460	150
10	800	550	550	450	500	175
15	800	550	550	450	500	200
20	800	550	550	450	500	250
25	900	650	600	500	600	280
30	900	650	600	500	600	300

Size/ Mass (three phase)

Note: The size of non-standard type may differ from this size.

Capacity	Size（mm）					Mass（kg）
（kVA）	H	W	D	A	B	Mass（kg）
5	600	550	450	350	500	105
7.5	600	550	450	350	500	140
10	800	600	450	350	550	165
15	800	600	450	350	550	195
20	800	600	450	350	550	240
30	900	700	500	400	650	305
40	900	700	500	400	650	385
50	900	700	500	400	650	425
75	1,000	800	600	500	750	540
100	1,000	800	600	500	750	630