TPR_ / TPR_B / TU_CP / TU_R / TUC_ / TL_ / TUP_R protection current transformers 5P/10P, including zero-sequence CTs
Country: Spain · Model: TPR_ / TPR_B / TU_CP / TU_R / TUC_ / TL_ / TUP_R
The TPR_, TPR_B, TU_CP, TU_R, TUC_, TL_ and TUP_R protection current transformers have classes 5P10, 5P20, 10P10 and 10P20 and work in the 50–5000 A range. They supply relay protection, breaker trip units and monitoring relays in 0.4 kV installations, and the zero-sequence TUP_R monitor earth faults.
- Protection class
- 5P10, 5P20, 10P10, 10P20
- Primary current
- 50–5000 A (depending on model)
- TPR_
- TPR60, TPR80, TPR100, TPR125: cable Ø60–Ø125 mm; 100–5000 A; up to 120 VA
- TPR_B
- TPR80B, TPR100B, TPR125B: busbars 50×50, 105×45, 122×52 mm; 250–5000 A
Technical specifications
| Protection class | 5P10, 5P20, 10P10, 10P20 |
|---|---|
| Primary current | 50–5000 A (depending on model) |
| TPR_ | TPR60, TPR80, TPR100, TPR125: cable Ø60–Ø125 mm; 100–5000 A; up to 120 VA |
| TPR_B | TPR80B, TPR100B, TPR125B: busbars 50×50, 105×45, 122×52 mm; 250–5000 A |
| TU_CP / TU_R | wound primary, 50–800 A |
| TUC_ / TL_ | plastic feed-through, 200–2500 / 2000–5000 A |
| TUP_R zero-sequence | TUP310R, TUP300R, TUP900R: windows 310×80, 384×84, 905×145 mm; 60/1 A; 5P10; 0.25 VA |
| Max. operating voltage | 720 V |
| Test voltage | 3 kV AC, 1 min |
| Secondary current | x/5 A, x/1 A |
| Frequency | 50–60 Hz |
| Standards | IEC 61869-1/-2, IEC 60185, IEC 61010 |
Replacement for
T-0.66, TShP-0.66, TOP-0.66, TShL-0.66, TNSh-0.66 (current transformers 0.66 kV, 5–5000 A); TZLM, TZRL, TZLK (zero-sequence)
selected by purpose and main parameters, please confirm with the manager
Replacement pages: ТНШ-0,66, ТНШ, ТОП-0,66, ТОП, ТШП-0,66, ТШП
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
Protection transformers keep the specified error at short-circuit currents many times higher than the rated current, so they are used to supply protection relays and trip units. TPR60, TPR80, TPR100 and TPR125 are filled with resin, have Ø60, Ø80, Ø100 and Ø125 mm windows and currents of 100–5000 A, and the burden reaches 120 VA in class 5P10 (TPR60 at 5000 A) and 70 VA in class 5P20. TPR_B is chosen for 50×50, 105×45 and 122×52 mm busbars (cable Ø45–Ø52) at 250–5000 A. TU_CP and TU_R with a wound primary cover 50–800 A, TUC_ and TL_ give 200–2500 and 2000–5000 A, and TUP_R work at 500–5000 A. The zero-sequence transformers TUP310R, TUP300R and TUP900R have windows of 310×80, 384×84 and 905×145 mm, a rating of 60/1 A, class 5P10, a burden of 0.25 VA, an overload of 1.5 In and a 2×2.5 mm² secondary cable.
How to choose
Choose by protection class and type of primary circuit. For cable take TPR_ with Ø60–Ø125 mm windows, for a busbar TPR_B, and for small currents up to 800 A, TU_CP or TU_R will do. For measuring earth-fault current you need TUP310R, TUP300R or TUP900R, with all phases passing through the window. If only metering is needed, look at the measuring TU_R for 25–6000 A.
Request a price and lead time
TPR_ / TPR_B / TU_CP / TU_R / TUC_ / TL_ / TUP_R protection current transformers 5P/10P, including zero-sequence CTs. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How does a protection transformer differ from a measuring one?
It keeps the specified error at short-circuit currents many times higher than the rated current. The protection classes are 5P10, 5P20, 10P10 and 10P20, and TP and TPx models are made to order.
How is earth-fault current measured?
All phase conductors are passed through the large window of TUP310R, TUP300R or TUP900R. The rating is 60/1 A, class 5P10, burden 0.25 VA.
What are the general parameters and operating temperature?
720 V, 3 kV AC for 1 min, 50–60 Hz, thermal withstand 60 In, dynamic current 2.5 Ith, overload 1.2 In, temperature −5…+40 °C. Secondary current x/5 A or x/1 A, insulation class E (B on request).
Which standards and CE declarations apply to the series?
IEC 60185, IEC 61010, IEC 61869-1/-2, UNE-EN 61000-6-1 and 61000-6-3, UL94-V0, VDE 0414, DIN 57414 and BS 3938. CE declarations are available for TPR60–TPR125, TUP85R–TUP900R, TU3BCP, TU40CP and TU3R.
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Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.