“SARAH Inc.” AC Current Sensor (Current Transformer) High-precision, Cramp-on Type

SARAH Inc.: AC Current Sensor High-precision, Cramp-on Type (Through Hole dia: For 10 mm dia. & 16 mm dia. Cable)

SARAH Inc. SR-3700 Series, SR-3800 Series
■ Features:
1) CT are attached to a cable easily by clamp-on structure.
2) The ferrite core reduced misalignment between top coa & bottom coa by our original structure and improved performance.
3) When pulled the lead wire, the lead wire do not fall out by the prevention structure of pull force.
4) Our CT is production in Philippine (Cebu factory). Threfore, our CT becames low price.
5) Compliant with RoHS.
■ Applications:
Monitoring system of electric energy (Home, Industry, Data center etc.) and others .

 

 

SR-3700 series (Through hole dia.: for 10 mm dia. cable)

SARAH 3700 Series
● Open circuit protection(7.5 V: Zenor Diode) is implacement in CT inside.
● Lead wire: Length—150 mm
  Wire size—22 AWG (Stranded wire),
  UL 3266 (Temperature rating: 125°C), Insulation color—White, Black
● Connector—JST Mfg.Co.,Ltd. (Model No.—SMR-02V)
■ Specifications
Part Number (P/N)
SR-3704-150A
Through hole dia. 10 mm dia. cable
Rated Primary Current (50/60Hz) 80 A
Phase Displacement 65±20′
Ratio Error (Current Error) 0±0.5%
Withstanding Voltage 2,000 V AC(r.m.s) / one minute
Flammability UL 94 V-0
Notes:
1. Measuring condition — Frequency: 50Hz, Current; 5 A, RL ≤ 10Ω
2. P/N: SR-3703 and 3704 is corrected product of ratio error.
3. The data of specifications measured it with measuring equipment as same as JEMIC (Japan Electric Meters Inspection Corporation).

 

 

SR-3800 series (Through hole dia.: for 16 mm dia. cable)

SARAH 3700 Series
● Open circuit protection(7.5 V: Zenor Diode) is implacement in CT inside.
● Lead wire: Length—150 mm
  Wire size—22 AWG (Stranded wire),
  UL 3266 (Temperature rating: 125°C), Insulation color—White, Black
● Connector—JST Mfg.Co.,Ltd. (Model No.—SMR-02V)
■ Specifications
Part Number (P/N)
SR-3803-150A
Through hole dia. 16 mm dia. cable
Rated Primary Current (50/60Hz) 150 A
Phase Displacement 35±10′
Ratio Error (Current Error) 0±0.3%
Withstanding Voltage 2,000 V AC(r.m.s) / one minute
Flammability UL 94 V-0
Notes:
1. Measuring condition — Frequency: 50Hz, Current; 5 A, RL ≤ 10Ω
2. P/N: SR-3803 and 3804 is corrected product of ratio error.
3. The data of specifications measured it with measuring equipment as same as JEMIC (Japan Electric Meters Inspection Corporation).

 

 

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SARAH SR-3700 	& SR-3800 series Catalog Download
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SARAH Inc.: SR-3700 & SR-3800 series Catalog Download

 

 

Head office sales division

  • Address: 4-23-3, SHIMOMEGURO, MEGURO-KU, TOKYO, 153-0064, JAPAN
  • E-Mail: office@tokoh.biz
  • TEL. +81-3-3714-2800
  • FAX. +81-3-6661-4814
  • Skype ID: masatoshi-uchiyama

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SARAH: CT(Current Transformer) for HEMS & BEMS Alternating-current watt-hour meters

Extra high accuracy current transformer

  • Area of linearity: ~180A, 50Hz, at load resistance 10Ω
  • Ratio error: ±2(%) maximum
  • Phase angle difference: 10 minutes maximum(at 5A, 50Hz, load resistance 10Ω)
  • Reduced the change of characteristics for operating temperature: (-40 to +80℃)

 

Download PDF

SARAH CT(Current Transformer) for HEMS & BEMS Alternating-current watt-hour meters

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Current Transformer Catalog

 

 

Head office sales division

  • E-Mail: office@tokoh.biz
  • TEL. +81-3-3714-2800
  • FAX. +81-3-6661-4814
  • Skype ID: masatoshi-uchiyama

E-Mail Form

Your Name (required)

Your Email (required)

Subject

Your Message & Company Name

SARAH: PT(Potential Transformer or VT=Voltage Transformer) for PV power conditioner

It is an introduction of the potential transformer for voltage detection with optimized power conditioners for photovoltaic power generation, to demand monitoring system. SARAH Inc. supply transformer to match the customer’s design is available.

 

SARAH Inc. Potential Transformer

This product is based on the insulated structure of IEC60950.
  • Creepage distance: Over 4mm
  • If the plastic resin material exceeding the tracking resistance 600V is used, performance equivalent to the creepage distance of 8 mm will be guaranteed.
  • The linear characteristic is excellent in the domain of the low voltage.
  • There is little high frequency distortion.
  • Phase difference is small.

 

Specifications

SL. No. Items Specification
1 Rated Primary side Voltage 50Hz / 60Hz, 100V / 200V
2 Operating Voltage Range 50Hz / 60Hz, 50V to 260V
3 Rated Secondary side Voltage 1V / 2V
4 Load Resistance 1kΩ
5 Turns Ratio 100 :1
6 Ratio Error ±1%
7 Phase Angle 1 deg. Maximum atrated
8 Dielectric Withstanding Voltage AC 2,000V: Primary to Secondary
Primary to Core
AC 1,000V: Secondary to core
No breakdown or flashover atone minute
9 Insulation Resistance 100MΩ (Between)
10 Type of Insulation Level Type E
11 Temperature Rise 50℃ Maximum
12 Operating temperature Range -10 to +50℃
13 Compatible Standard IEC 60950

 

Download PDF

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Potential Transformer Catalog

 

 

Head office sales division

  • Address: 4-23-3, Shimomeguro, Meguro-ku, Tokyo, 153-0064, Japa
  • E-Mail: office@tokoh.biz
  • TEL. +81-3-3714-2800
  • FAX. +81-3-6661-4814
  • Skype ID: masatoshi-uchiyama

E-Mail Form

Your Name (required)

Your Email (required)

Subject

Your Message & Company Name