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| 型号： | ACA5-20RM-5-AC3-RL-C |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 3/5页 |
| 文件大小： | 0K |
| 描述： | AMMETER AC 200A 120VAC RED |
| 产品培训模块： | ACA5-20RM Series |
| 产品目录绘图： | Digital Panel Meter |
| 特色产品： | ACA5-20RM Series Ammeters Digital Panel Meters |
| 标准包装： | 1 |
| 系列： | ACA5-20RM |
| 类型： | 安培表 |
| 测量范围： | 0 ~ 199.9A |
| 显示器样式： | 红色字符，黑色背景 |
| 显示器类型： | LED |
| 显示器位数： | 3.5 |
| 显示器位数 - 高度： | 0.370"（9.40mm） |
| 背光： | 无 |
| 安装类型： | 面板安装 |
| 端子： | 端接块 |
| 电源电压： | 85 ~ 140VAC |
| 产品目录页面： | 2856 (CN2011-ZH PDF) |
| 其它名称： | 811-1976 |
ACA5-20RM Series
True-rms-AC Ammeters with 5A CT Inputs
3. Wire Gauges and Fusing: Wires speci?ed in the Functional Speci?ca-
tions section must be used for making connections to ACA5-20RM
series ammeters. All power-supply and load wiring must be rated for
the supply voltages and currents they will conduct and must comply
with any code or application-mandated requirements pertaining to the
user’s speci?c installation.
ACA5-20RM ammeters are not internally fused. Terminal block TB1 is
to be used only for powering the ammeter’s internal circuitry; it must
not be used to supply power to external loads. The supply wires feed-
ing these ammeters must be fused with a 0.25A/250V time delay/time
lag fuse, in accordance with applicable regulatory codes.
Wire insulation must be stripped to within ±10% of the stated dimen-
sions, and wires should be inserted into TB1 such that their insulation
is not pinched by the screw terminal.
4. AC Supply Polarity and Grounding: The two supply inputs, TB1-A and
TB1-B, on ACA5-20RM ammeters are not in themselves polarity sensi-
tive, that is, they have no internal “AC LO” or “AC HI” designations.
ACA5-20RM ammeters do not include or require a connection to earth/
chassis ground.
5. Connector Torque Ratings: It is important to tighten TB1’s, screw-ter-
minals to their rated torque speci?cation of 3.6 pound-inches (0.4Nm).
Proper tightening will minimize connector losses and ensure safe,
reliable operation.
7. CT Precautions: In normal operation, a 5A CT’s secondary circuit
operates at a very low voltage due to its closed-loop operation and
low burden resistance. However, a CT can still generate potentially
lethal voltages if its output current is suddenly interrupted. For
example, loose 5A CT secondary connections can cause a condition
referred to as “inductive kick”. Inductive kick can generate extremely
high voltages across a CT’s intermittent secondary connections.
Therefore, implementing connections to any 5A current transformer’s
output leads must only be performed with zero load-current ?owing
the CT’s primary load-circuit.
8. CT Connections and Grounding: Some applications require connect-
ing one of the external 5A CT’s output leads to earth/chassis ground.
In the USA, consult the latest revision of the National Electrical Code
(NEC) for more information regarding CT grounding.
After all mechanical assembly is completed, connect the two output
leads of the external 5A CT to each other after they are run through
L1’s center hole. Pressure-style connectors (commonly referred to as
“wire nuts”) are acceptable as long as they are rated for the number
of conductors and voltage involved.
9. Replacing Analog Panel Meters: ACA5-20RM ammeters can be
used as direct replacements for most analog panel meters driven by
external 5A CT’s. All wiring operations must be performed with both
the load and the supply power sources completely de-energized.
6. Isolation: The built-in toroid sensor (L1) provides a minimum of
2000Vdc isolation between the external CT’s 5A secondary conductors
and the ammeter supply voltage connected to TB1.
BACK VIEW
A
FUSED AC POWER
TB1
B
L1
Figure 2. Typical wiring diagram
www.murata-ps.com/support
MPM_ACA5-20RM.A08 Page 3 of 5
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| ACA5-20RM-5-AC4-RL-C | 功能描述:数字面板表 200A rng, 170-264Vac 3.5 Dig brght rd LED RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
| ACA5-20RM-9-AC3-RL-C | 功能描述:数字面板表 500A rng, 85-140Vac 3.5 Dig brght rd LED RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
| ACA5-20RM-9-AC4-RL-C | 功能描述:数字面板表 500A rng, 170-264Vac 3.5 Dig brght rd LED RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
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