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参数资料
| 型号： | 7020-01040-0 |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 2/4页 |
| 文件大小： | 0K |
| 描述： | TRANSFORMER CURRENT 200A |
| 产品培训模块： | Magnetics Offering |
| 标准包装： | 5 |
| 系列： | DMS |
| 变压器类型： | 频率 50-400Hz. |
| 额定电流： | 5A |
| 安装类型： | 自由悬挂 |
| 尺寸/尺寸： | 31.80mm 直径 x 36.10mm W |
| 端接类型： | 导线引线 |
| 产品目录页面： | 2856 (CN2011-ZH PDF) |
| 其它名称： | 7020-1040-0 811-1109 |
DMS Accessories
5 Amp AC Current Transformers
TECHNICAL NOTES
NAT
4. Reference Documentation: Prior to connecting CTs to any measure-
ment device (analog or digital), relay, or other apparatus, be sure to
thoroughly review the applicable device’s technical documentation (for
example, DATEL’s ACA5-20PC product data sheet). In particular, make
sure the CT’s ratings meet the requirements of your application.
5. Secondary Lead Extensions: When calculating the total burden
imposed on a CT’s 5A output, DATEL’s ACA5 digital ammeters’ input
impedance is negligible and can be assumed to be zero Ohms. In
many applications, the length of secondary wiring can be increased up
to the value speci?ed in Table 1 without adversely affecting perfor-
mance.
In order to achieve the speci?ed accuracy, the maximum permissible
burden must not exceed the value shown in Table 1. When used with
ACA5 ammeters, the total burden is the sum of the resistance of the
CT’s 24” leads and any lead-extensions. Make sure all connections
are securely tightened and properly strain relieved. If terminal blocks
are used for intermediary connections, refer to the manufacturer’s
torque recommendations.
Table 1 lists general guidelines for adding lead extensions when using
DATEL’s ACA5-Series ammeters as the readout device. The lengths in
Table 1 assume the lead extensions are 16AWG. Stated dimensions
are one-way distances between the ACA5 and the CT. Make sure all
secondary extensions meet or exceed the speci?cations of the CT’s
built-in leads. In order to minimize external noise pick up, lead exten-
burden column. Accuracy measurements are taken at 100% primary
current, using a resistive burden and a nominal line frequency of 60Hz.
7. Polarity: CTs are marked with ‘H1’ (primary) and ‘X1’ (secondary)
polarity indicators. When a CT’s only function is to measure amperes,
polarity markings can be disregarded. However, correct polarity is
mandatory in applications in which the phase relationship between
two currents is involved (watt or watt-hour meters are two examples
of polarity sensitive applications). Refer to the respective instruments’
documentation for more information.
8. Thermal Rating Factor: The thermal rating factor denotes the amount
by which the primary current can be increased on a continuous
basis over its rated value without exceeding the CT’s maximum
temperature rise.
The formula below can be used to calculate thermal rating factors at
temperatures above 30°C.
(85 - NAT)(RF) 2
NRF =
NRF = Rating Factor at New Ambient Temperature
RF = 30°C Rating Factor
NAT = New Ambient Temperature
Example: Find the 55°C. thermal rating factor of a 2000:5 CT whose
30°C rating factor is 2.0
sions should be as kept short as possible.
6. Accuracy: The indicated accuracy speci?cations are valid as long
as the total secondary burden does not exceed the value in Table 1’s
NRF =
(85 - 55)(2) 2
55
= 1.48
Table 1. Selection Guide
DATEL Part No.
7020-01036-0
7020-01037-0
7020-01038-0
7020-01039-0
7020-01040-0
7020-01041-0
39-3681407*
39-3681408*
39-3681409*
7020-01042-0
7020-01043-0
7020-01044-0
7020-01045-0
7020-01046-0
Current Ratio
(Amps)
50:5
75:5
100:5
150:5
200:5
250:5
300:5
400:5
500:5
600:5
750:5
1000:5
1500:5
2000:5
Accuracy
(@ 60Hz)
±2%
±2%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
±1%
Burden
VA (Ohms)
1.5 (0.06)
3.0 (0.12)
3.0 (0.12)
6.0 (0.24)
8.0 (0.32)
10.0 (0.40)
12.5 (0.50)
12.5 (0.50)
20.0 (0.80)
10.0 (0.40)
10.0 (0.40)
10.0 (0.40)
12.5 (0.50)
15.0 (0.60)
Lead Ext.
Feet (Meters)
4 (1.2)
10 (3.0)
10 (3.0)
20 (6.1)
30 (9.1)
40 (12.2)
50 (15.2)
50 (15.2)
80 (24.4)
40 (12.2)
40 (12.2)
40 (12.2)
50 (15.2)
60 (18.3)
Thermal Rating Factor
(@30°C)
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2.0
2.0
2.0
2.0
2.0
*
Not RoHS Compliant
www.murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
MPM_DMS-CT.A01 Page 2 of 4
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相关代理商/技术参数 |
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| 7020-01041-0 | 功能描述:电流变压器 250:5A ratio 10VA 5 Amp AC Current RoHS:否 制造商:EPCOS 安装风格: 电感:320 uH 电流额定值: 匝数比: 次级线圈电阻:1140 mOhms 端接类型:SMD/SMT 长度:8.13 mm 宽度:7.11 mm 高度:5.08 mm 频率: |
| 7020-01042-0 | 功能描述:电流变压器 600:5A ratio 10VA 5 Amp AC Current RoHS:否 制造商:EPCOS 安装风格: 电感:320 uH 电流额定值: 匝数比: 次级线圈电阻:1140 mOhms 端接类型:SMD/SMT 长度:8.13 mm 宽度:7.11 mm 高度:5.08 mm 频率: |
| 7020-01043-0 | 功能描述:电流变压器 750:5A ratio 10VA 5 Amp AC Current RoHS:否 制造商:EPCOS 安装风格: 电感:320 uH 电流额定值: 匝数比: 次级线圈电阻:1140 mOhms 端接类型:SMD/SMT 长度:8.13 mm 宽度:7.11 mm 高度:5.08 mm 频率: |
| 7020-01044-0 | 功能描述:电流变压器 1000:5A ratio 10VA 5 Amp AC Current RoHS:否 制造商:EPCOS 安装风格: 电感:320 uH 电流额定值: 匝数比: 次级线圈电阻:1140 mOhms 端接类型:SMD/SMT 长度:8.13 mm 宽度:7.11 mm 高度:5.08 mm 频率: |
| 7020-01045-0 | 功能描述:电流变压器 1500:5A ratio 12.5VA 5 Amp AC Current RoHS:否 制造商:EPCOS 安装风格: 电感:320 uH 电流额定值: 匝数比: 次级线圈电阻:1140 mOhms 端接类型:SMD/SMT 长度:8.13 mm 宽度:7.11 mm 高度:5.08 mm 频率: |
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