TERADYNE 950-595-01

TERADYNE 950-595-01

TERADYNE 950-595-01

TERADYNE 950-595-01檢測線圈在傳感器內的補償線圈上繞20匝，這樣就可以模擬原邊電流進行檢測。因此輸出與測試電流的關系為：Vout-Vref=Gth*It（測試電流）*20
根據IEC62109-2標準中4.4.4.15.1和4.8.3.5規定，每次光伏逆變器在重啟時，需利用漏電流傳感器的檢測線圈驗證傳感器的精度。此時可以利用恒流源給檢測線圈注入測試電流。在測試結束之后，應該斷開測試線圈回路，以免對正常測量形成干擾。此時，由于互感原理的作用，當原邊電流發生瞬間變化時，開路的測試線圈兩端可能會產生高壓，因此電路中應該增加相關保護器件。
下圖是這一功能的一個測試示例，由TL431（U3）構建恒流源為線圈提供測試電流。當U2的IO管腳置為高電平時，Q2將恒流源接通，注入測試線圈的電流為2.5v/R2=2.5v/160=15.6mA,相當于給原邊通入15.6*20=312mA的電流。此時通過讀取AD值與理論值312mA進行比對，對測量精度進行驗證。
驗證完成之后，將U2的IO管腳置為低電平，Q2截止，測試線圈回路斷開。此時可進行正常測量。另外在檢測線圈兩端跨接TVS管，當原邊電流發生瞬變時，測試線圈耦合產生的能量通過TVS管釋放。與進口品牌的值齒輪組真多圈完全一致的值技術，可靠性得以保證；
2）一樣的安裝尺寸與方式、一樣的防護等級、溫度等級、EMC電磁兼容性（2級）
3）一樣的25位SSI信號接口，便于直接替換
4）一樣的電纜長度定制要求
TERADYNE 950-657-00
TERADYNE 950-658-00
TERADYNE 950-660-02
TERADYNE 950-665-03
TERADYNE 950-678-01
TERADYNE 950-696-01
GAUGE WINTERS 0-30 PSI 2" FACE 1/4" NPT BACK PANEL MOUNT NIB *FREE S&H <46383
BALL  7720593 
MOLDED TED113020 
CUTLER HAMMER MAIN BREAKER 200 AMP 2 POLE 120V <661
BALL VALVE 1/2" 2000 NPT FP 316SS 2PC BREWING  154WH
SQUARE  QOM2150VH 
CUTLER HAMMER MAIN BREAKER 150 AMP 2 POLE 120V <660
2-1/2" NPT CI FOOT VALVE PROSPECTING, TRASH PUMP <428M6
PARKER GOLD RING SOLENOID UNIT VALVE 3/8" BRZ 06F22C2140 ADF <409I2
ALLEN BRADLEY 700-P600A1 
ASHCROFT GAUGE 2" 35 PSI 1/4" NPT BRZ NIB <465L2
ASHCROFT GAUGE 63MM 1.6BR 1/4" NPT LOWER NIB <275G5
NORDSTROM 4" POLY GAS PLUG VALVE SDR11 FIG NO 88211 SDR VALVE < 973M1
ECCENTRIC REDUCER BUTT WELD S-10 6 X 3 304 SS <211WH
SWAGE NIPPLE CONCENTRIC 6 X 3 NPT SCH- 80 -XH ELECTRO PLATED - STEEL WPB <042WH
PARKER  06F22C2140AAF 
APPLETON CONDULET FITTING LL200-M2 FORM 35 NIB <076C4
SIGHT FLOW INDICATOR 2" 150 FLANGED CS RF W/STAINLESS FLAPER < 273WH
ASHCROFT THERMOMETER 
ASHCROFT GAUGE 63MM 4KSC 63 1008 A O2L 4KSC 1/4" NPT LOWER NIB <254F5
PRESSURE  10000KP/1400PSI 
WIKA PROCESS GAUGE 4 1/2" 100 PSI 1/2" SS NPT <322F2
Needle Valve Mini 1/4" MNPT x 1/4" FNPT 6,000 PSI Stainless Metal Seats <551IN05
CIRCUIT SENTRY AC FLOW LIMITING VALVE 3/4" X 1" BRASS <324W3
CIRCUIT SENTRY AC FLOW LIMITING VALVE 3/4" BRASS <323W3
FDI UA150 (7) FLOW REGULATING BALL VALVE 11/2" BRASS  <322W3
FDI # UA200 (7) FLOW REGULATING BALL VALVE 2" BRASS  <321W3
FDI MC AUTO FLOW REGULATING VALVE 1/2 SWEAT BRASS <319W3
WYE STRAINER 3" NPT CAST IRON 250 SWP SS SCREEN <270WH
HOFFMAN SPECIALTY STEAM MAIN VALVE 2100 CI 1/2"NPT <308D1
BRASS PIPE NIPPLE 1/2" X 4" STD NPT < 299WH
REGULATOR EQUIMETER #043 CAST IRON BODY 1/2" NPT<280L4
PARKER GOLD RING SOLENOID UNIT VALVE 1/4" NIB <426J3
PARKER GOLD RING SOLENOID #DFGC05 120VAC <440I2
PARKER  04F20C2114BDF 
THERMOMETER 3" FACE 6" STEM -50-550*F BBQ PITTS <941P4
ASHCROFT GAUGE 3-1/2" 30# 1/4"NPT PANELMOUNT NIB<462L2
BRONZE SWEAT BALL VALVE 3/4" 150 SWP 600 CWP <262WH
BRASS SWING CHECK VALVE 1/2 NPT 300 SWP 1000 CWP<260WH
SQUARE TED124050 
SQUARE TED124070 
STRAINER WYE CAST IRON 1/2" NPT 250 SWP WATTS <233WH
CAST IRON WYE STRAINER 1" NPT 250 SWP <220WH
CROUSE-HINDS 
TEE 1 1/2" STD BUTT WELD STEEL WPB <205WH
2" 150 RF FLANGED STEEL WCB GATE VALVE FACTORY 
BALL VALVE 1-1/4" NPT 2000# C/SxS/S  PLUMBING<533O3
BUTTERFLY VALVE 4" LUG ; IRRIGATION PLUMBING PROCESS
BUTTERFLY VALVE 6" WAFER IRRIGATION PLUMBING 
TUBE union TEE 3/4 SS 316 BRENNAN <1210TT
SWAGE NIPPLE CONCENTRIC 4 X 3 NPT XH PLATED WPB <038WH1