1. GPT's definition is usually referred to as GPT (Ground Potential Transformer), but the current and Voltage Transformer in Earthed. IEC In other words, the primary input to the power of one side of the Line (U) and the other half (V-side) used by ground directly on the art board, the gauge refers to the 3-phase, 1 car for the transformer to ground that neutral point Y-up directly to the ground and using the instrument for the transformer. 2. purpose of use of the GPT. GPT is usually three phase line voltage detection are supported for the rock incident: video and at the same time SGR (select rock relay) relay stream currents of electricity to be able to operate, but rock is usually used to give. 3. what kinds of GPT. GPT is typically in the following categories. 3.1 Due to the use of the former (the system). 1) for the effective grounding system---(either 1-phase (or two), but this potential is on the ground when another sound less than 1.4 times the sound: a battalion elevation system) for system-of-the-ground 2) biyuhyo (of which 1 (or 2), but this potential is on the ground when another sound than 1.4 times the battalion up to the sound system), based on the rank 3.2 error. There are 2 types of 3P, 6P. ** Note: J C E-1201 3 g, classified as 5G. 3.3 According to the burden (Burden). 15, 25, 50, 75, 100VA (ⁿ w x 10) ** Note: J C E-1201 is classified as 25, 50, 100, 200, 500VA. 3.4 use restrictions, time-dependent kind. good drainage and overvoltage 1) 1.5 V n/30 s — — — — — — — — the effective grounding system in use. 2 n/30 s) 1.9 V — — — — — — —-biyuhyo automatic Trip device in grounding system CB (protection relay) is used when you want to be installed. 3 n/8 h-V) 1.9 — — — — — — —-biyuhyo automatic Trip device in grounding system CB (protection relay) is installed when it is not used. Vn: rated voltage ** Note: J E m i n/30 C-1201 is 1.9 V rated voltage type n 3.5. in accordance with 1) rated primary voltage: 220/nouns 3, ~ 3 V. etc. .. 22900/nouns 2) rated secondary voltage: 110/nouns 3, ~ 190/nouns 3 V. etc. .. Rated 3 phase voltage: 110/3, 3) ~ 190/3 V. etc. .. 4. selection of GPT. 3 and as such because there are several kinds of GPT (System) will be required should be selected depending on the purpose of the situation. Here, on the ground system, SGR biyuhyo 6600V, using CLR for use to help protect your ground accident shall select. 4.1 3.1 biyuhyo protest--for a ground system (this is because it's considered the use of limited time in this protest overvoltage 3.4 locally) n/30 V 4.2 3.4 S 4.3 3.2 protest protest1.9 (3G)-3P-to-chapter and p. ..("For example" 5 percent error-in), select the above 4.1 to 4.3 4.4 3.3 protest is generally borne by the former will be chosen depending on the (System) is at the user's intent can vary, depending on the. In other words, how many will you install a relay or do you have that much to do with the CLR is important. "For example" 1) relay (SGR): 1 set (u shape-to-be-38VA/190V) 2) 3 CLR: 25 Ω (1)) conditions: Rock resistance-to--0 Ω: relay the current to the first) three secondary-side ignore burden. 190 V/25 Ω = 1 second) (capacity) on the burden of A 7.6 GPT. 110Vx7.6A = 836VA third) at the expense of the rated voltage (190/3V), save the day when the (capacity). 836VA/3 = 278.7 V A-----≒ 300VA in other words, if you selected as the. 300VA 5 percent of the voltage-error is just this-≒. In addition, for products that are produced by the IEC, and if you want the error to less than 3% 836VA/nouns need 3 = A, that is, if you named the 500VA 482.7 V. Note that the error is less than-10%. will be available for the given enough 150VA 5. be careful when using GPT selection and second-phase voltages are connected), the appliance ground accidents can be three times the rated voltage is below the numbers rise should be considered sufficient if the coefficient of overvoltage. 2) second, the burden is less than 1/3 of the burden, if possible, each rated at Proto-Slavic derivations. awards to evenly 3) limit the use of the CLR, the third round and plenty of time, there is a need to review the rating of and. 4) primary point is that even for earthling the neutral. 5) today is produced by the SGR is static, or a digital-type input voltage can be freely adjusted for the error correction rather than considering the use of time-outs during overvoltage

of the tertiary would be cost-effective to select the burden. 6. alarm Electric Co., Ltd. is produced in the kinds of GPT. 6.1 1.2 k V 1) for NL3 — — — — —-1.0/-, 50/-VA: no tertiary winding. 2) NL5 — — — — —-1.0/-, and 100/-VA: no tertiary winding. 3) NL6 — — — — —-1.0/-, no 200/-VA: tertiary winding. 4) NL3T — — — — —-1.0/3 P, 50/100VA: tertiary winding. 5) NL5T — — — — —-1.0/3 P, 100/200VA: tertiary winding. 6) NL6T — — — — —-1.0/3 P, 200/500VA: tertiary winding. 6.2 3.45 V 1) for k-1.0/NM3 — — — — — —, 50/-VA: no tertiary winding. 2) NM5 — — — — —-1.0/-, and 100/-VA: no tertiary winding. 3) NM6 — — — — —-1.0/-, no 200/-VA: tertiary winding. 4) NM3T — — — — —-1.0/3 P, 50/100VA: tertiary winding. 5) NM5T — — — — —-1.0/3 P, 100/200VA: tertiary winding. 6) NM6T — — — — —-1.0/3 P, 200/500VA: tertiary winding. 6.2 to 7.2 k 1 for V) NH3 — — — — — — 1.0/-, 50/-VA: no tertiary winding. 2) NH5 — — — — —-1.0/-, and 100/-VA: no tertiary winding. 3) NH6 — — — — —-1.0/-200/-VA: no tertiary winding. 4) NH3T — — — — —-1.0/3 P, 50/100VA: tertiary winding. 5) NH5T — — — — —-1.0/3 P, 100/200VA: tertiary winding. 6) NH6T — — — — —-1.0/3 P, 200/500VA: tertiary winding. 6.2 1 for the 12kV) NV5 — — — — —-1.0/-, 50/-VA: no tertiary winding. 2) NV6 — — — — —-1.0/-, and 100/-VA: no tertiary winding. 3) NV6 — — — — —-1.0/-, no 200/-VA: tertiary winding. 4) NV5T — — — — —-1.0/3 P, 50/100VA: tertiary winding. 5) NV6T — — — — —-1.0/3 P, 100/200VA: tertiary winding. 6) NV6T — — — — —-1.0/3 P, 200/300VA: tertiary winding. 6.2 24kV NE1 — — — — — — for 1), 1.0/100/-VA: no tertiary winding-. 2) NE1 — — — — —-1.0/-, no 200/-VA: tertiary winding. 3) NE1T — — — — —-1.0/3 P, 100/200VA: tertiary winding. 4) NE1T — — — — —-1.0/3 P, 200/200VA: tertiary winding. ** Note ** ** other ranks, as well as other specifications, tolerances, overvoltage, drainage, even production possible. Please see the product sogaeran.